Top 9 Best Color Grading Software of 2026

GITNUXSOFTWARE ADVICE

Art Design

Top 9 Best Color Grading Software of 2026

Top 10 Color Grading Software tools ranked for smooth workflows. Compare Lightworks, Colorlab, FilmConvert picks and choose the right grade.

18 tools compared23 min readUpdated 3 days agoAI-verified · Expert reviewed
How we ranked these tools
01Feature Verification

Core product claims cross-referenced against official documentation, changelogs, and independent technical reviews.

02Multimedia Review Aggregation

Analyzed video reviews and hundreds of written evaluations to capture real-world user experiences with each tool.

03Synthetic User Modeling

AI persona simulations modeled how different user types would experience each tool across common use cases and workflows.

04Human Editorial Review

Final rankings reviewed and approved by our editorial team with authority to override AI-generated scores based on domain expertise.

Read our full methodology →

Score: Features 40% · Ease 30% · Value 30%

Gitnux may earn a commission through links on this page — this does not influence rankings. Editorial policy

Color grading software directly shapes creative intent through correction, look management, and output-ready tone mapping for SDR and HDR delivery. This ranked list helps scanners compare editing-suite tools and dedicated grading platforms, so teams can match features like scopes, tracking, and review collaboration to real post-production workflows.

Editor’s top 3 picks

Three quick recommendations before you dive into the full comparison below — each one leads on a different dimension.

Editor pick

Lightworks

Integrated timeline grading workflow with scopes for real-time correction

Built for editors and small teams needing integrated grading with timeline continuity.

Editor pick

Colorlab

Node graph grading with integrated primary and secondary correction controls

Built for color grading teams needing node-based look consistency across multiple clips.

Editor pick

FilmConvert

Camera and lens-based film emulation with grain and halation controls

Built for editors needing fast cinematic film looks with camera-aware film emulation.

Comparison Table

This comparison table evaluates color grading software used for editing, review, and finishing across desktop and plugin workflows. It contrasts key capabilities such as color management, supported host applications, live grading support, metadata and looks handling, and typical use cases for each tool, including Lightworks, Colorlab, FilmConvert, ColorTrace, and Magic Bullet Colorista. Readers can use the side-by-side details to match each option to practical tasks like on-set monitoring, post-production pipeline integration, and stylistic look building.

19.5/10

Includes color correction and grading tools in the editing environment for timeline-based workflows and finishing.

Features
9.4/10
Ease
9.7/10
Value
9.3/10
29.2/10

Colorlab provides professional color grading workflows with a timeline-based editor, scopes, and camera LUT and transform tools for post-production.

Features
8.9/10
Ease
9.4/10
Value
9.3/10

FilmConvert delivers film emulation and conversion looks as grading plugins that generate and apply camera and filmic color transformations in common NLE and grading hosts.

Features
8.9/10
Ease
8.8/10
Value
8.9/10
48.6/10

ColorTrace offers AI-assisted color management and look transfer for matching scenes across footage using automated color grading guidance and reference-based workflows.

Features
8.5/10
Ease
8.7/10
Value
8.7/10

Magic Bullet Colorista supplies real-time color grading controls, custom looks, and secondary correction-style tools through plugin-based workflows.

Features
8.2/10
Ease
8.6/10
Value
8.1/10
68.0/10

Mocha Pro includes planar tracking and color effects workflows that support selective color and stabilization use cases for targeted grading and compositing.

Features
7.8/10
Ease
8.0/10
Value
8.2/10

Assimilator HDR provides HDR color grading and tone mapping utilities for preparing HDR and SDR outputs from HDR sources using calibrated transforms.

Features
8.0/10
Ease
7.4/10
Value
7.6/10

Roxio Creator workflows include color correction tools and color grading controls inside its video editing suite for editing-focused color finishing.

Features
7.1/10
Ease
7.6/10
Value
7.6/10
97.1/10

Frame.io supports review workflows with annotations and approvals that enable colorists and editors to iterate on graded versions using shared feedback.

Features
7.2/10
Ease
7.2/10
Value
6.8/10
1

Lightworks

editor color

Includes color correction and grading tools in the editing environment for timeline-based workflows and finishing.

Overall Rating9.5/10
Features
9.4/10
Ease of Use
9.7/10
Value
9.3/10
Standout Feature

Integrated timeline grading workflow with scopes for real-time correction

Lightworks stands out for color grading inside a full non-linear editing workflow, not as a standalone grading app. It provides primary and secondary color correction with scopes and a node-like workflow for controlled adjustments. Its strength shows in consistent round-tripping between editing and grade rather than in advanced, specialized color science toolchains.

Pros

  • Color grading works directly from the editing timeline workflow
  • Includes scopes for evaluating exposure, contrast, and color balance
  • Supports tracked grading through timeline clips for faster revisions
  • Offers a practical set of primary and secondary correction tools
  • Timeline-first organization reduces context switching for editors

Cons

  • Advanced finishing tools are less comprehensive than dedicated grading suites
  • Color workflow can feel dense compared with simpler UI grading tools
  • Node-style controls can be less intuitive for fully grade-focused artists

Best For

Editors and small teams needing integrated grading with timeline continuity

Official docs verifiedFeature audit 2026Independent reviewAI-verified
2

Colorlab

pro color

Colorlab provides professional color grading workflows with a timeline-based editor, scopes, and camera LUT and transform tools for post-production.

Overall Rating9.2/10
Features
8.9/10
Ease of Use
9.4/10
Value
9.3/10
Standout Feature

Node graph grading with integrated primary and secondary correction controls

Colorlab stands out with a dedicated, color-grading workflow built around nodes, with a focused UI for correcting contrast, saturation, and luminance. Core capability centers on primary and secondary corrections, including calibration-style tools for balancing and matching shots across a timeline. The tool emphasizes consistent results via export-ready looks that can be refined iteratively without breaking the grading structure.

Pros

  • Node-based grading structure keeps complex grades organized
  • Strong primary and secondary correction tools for consistent image shaping
  • Color matching focused workflow supports shot-to-shot look continuity

Cons

  • Node graph complexity can slow navigation on large projects
  • Advanced finishing controls need more practice for precise dialing
  • Integration paths for external NLE and pipelines can feel workflow-dependent

Best For

Color grading teams needing node-based look consistency across multiple clips

Official docs verifiedFeature audit 2026Independent reviewAI-verified
Visit Colorlabcolorlab.com
3

FilmConvert

look plugins

FilmConvert delivers film emulation and conversion looks as grading plugins that generate and apply camera and filmic color transformations in common NLE and grading hosts.

Overall Rating8.9/10
Features
8.9/10
Ease of Use
8.8/10
Value
8.9/10
Standout Feature

Camera and lens-based film emulation with grain and halation controls

FilmConvert stands out for adding film-style looks through camera and lens-aware color emulation. It provides calibrated film emulation with grain, halation, and highlight behavior designed to integrate into a typical color grading workflow. The software also supports LUT-style output and a layered approach to grading so looks can be refined and reused across shots. Overall, it targets cinematic transformations rather than physical-lighting color science or advanced node-based grading.

Pros

  • Film emulation uses camera and lens data for consistent cinematic looks
  • Grain, halation, and highlight controls add filmic texture beyond simple LUTs
  • Produces reusable looks with straightforward parameter-based refinement

Cons

  • Less depth than node-based grading tools for complex shot matching
  • Advanced color management workflows require external tools or extra steps
  • Reliance on presets can limit highly custom, lab-grade grading approaches

Best For

Editors needing fast cinematic film looks with camera-aware film emulation

Official docs verifiedFeature audit 2026Independent reviewAI-verified
Visit FilmConvertfilmconvert.com
4

ColorTrace

AI color

ColorTrace offers AI-assisted color management and look transfer for matching scenes across footage using automated color grading guidance and reference-based workflows.

Overall Rating8.6/10
Features
8.5/10
Ease of Use
8.7/10
Value
8.7/10
Standout Feature

Color reference tracing workflow for repeatable grading and color consistency

ColorTrace stands out by focusing on color finding and traceability through guided reference workflows. The tool supports palette-driven grading, reference comparison, and repeatable color management for consistent looks across shots. ColorTrace is oriented around turning reference images into actionable grading adjustments rather than offering a fully manual color grading suite. Core capability centers on achieving consistent color results with fewer steps when matching shots.

Pros

  • Reference-driven color matching simplifies consistent look creation
  • Palette workflows help standardize grading across multiple shots
  • Traceable color adjustments improve repeatability in production

Cons

  • Limited manual control depth compared with high-end grading suites
  • Advanced node-style workflows feel less central than reference matching
  • Integration and pipeline flexibility appear narrower than broader competitors

Best For

Teams matching shots using reference images for consistent color output

Official docs verifiedFeature audit 2026Independent reviewAI-verified
Visit ColorTracecolortrace.com
5

Magic Bullet Colorista

grading plugins

Magic Bullet Colorista supplies real-time color grading controls, custom looks, and secondary correction-style tools through plugin-based workflows.

Overall Rating8.3/10
Features
8.2/10
Ease of Use
8.6/10
Value
8.1/10
Standout Feature

One-click looks plus live parameter controls for rapid stylistic grading

Magic Bullet Colorista stands out by offering fast, real-time grading controls built around looks, targeted color adjustments, and scene-friendly workflow. It combines a user-friendly set of primary controls with secondary tools that support selective color enhancement. The tool is designed to deliver polished results quickly, while still enabling more deliberate tweaks for shot-by-shot consistency. It functions best when grades need to be created and iterated inside a familiar editing and effects workflow.

Pros

  • Real-time grading feedback for quick look iteration
  • Strong one-click look presets for fast creative direction
  • Effective primary color controls with clean parameter organization

Cons

  • Secondary refinement tools can feel limited for complex masks
  • Less suited for deep color management workflows
  • Consistency across large catalogs may require extra manual effort

Best For

Editors needing quick, preset-driven grading for short-form and projects

Official docs verifiedFeature audit 2026Independent reviewAI-verified
6

Mocha Pro

tracking + grade

Mocha Pro includes planar tracking and color effects workflows that support selective color and stabilization use cases for targeted grading and compositing.

Overall Rating8.0/10
Features
7.8/10
Ease of Use
8.0/10
Value
8.2/10
Standout Feature

Mocha Pro planar tracking that generates mattes for motion-compensated color adjustments

Mocha Pro stands out with planar tracking and motion tracking built for compositing workflows rather than node-only grading. It supports color correction through tracked matte-driven adjustments, with tools for stability, keying, and cleanup that carry well into grade-driven revisions. The integration between tracking masks and downstream color operations makes it effective for shots that need localized correction tied to movement.

Pros

  • Planar tracking reliably creates stable masks for moving subjects
  • Tracked mattes enable localized grade adjustments tied to motion
  • Robust cleanup and relighting tools support difficult real-world footage
  • Works smoothly in iterative compositing and revision cycles

Cons

  • Color grading controls are not as deep as dedicated graders
  • Workflow overhead increases when grading does not require tracking
  • Learning curve is steeper due to tracking and matte refinement tools

Best For

Compositors needing motion-tied, localized color correction in VFX shots

Official docs verifiedFeature audit 2026Independent reviewAI-verified
Visit Mocha Proborisfx.com
7

Assimilator HDR

HDR grading

Assimilator HDR provides HDR color grading and tone mapping utilities for preparing HDR and SDR outputs from HDR sources using calibrated transforms.

Overall Rating7.7/10
Features
8.0/10
Ease of Use
7.4/10
Value
7.6/10
Standout Feature

Display-referred HDR monitoring with calibration-aware grade evaluation

Assimilator HDR focuses on display-referred HDR color workflows built around calibrated grading playback and repeatable transforms. Core capabilities include HDR grading with tone mapping, scene-linear processing, and monitoring tools designed for consistency across devices. The software also supports collaboration-oriented review by keeping adjustments tied to image intent rather than only final looks.

Pros

  • Strong HDR-centric grading with predictable display-referred output
  • Calibrated monitoring tools help maintain consistency across review sessions
  • Workflow supports intent-preserving transforms across intermediate steps
  • Detailed color processing suited for high dynamic range pipelines

Cons

  • Setup and display calibration requirements raise onboarding complexity
  • HDR-focused feature set can feel narrow for SDR-only teams
  • Interface complexity slows down quick look adjustments

Best For

Color teams producing repeatable HDR looks for finishing and review

Official docs verifiedFeature audit 2026Independent reviewAI-verified
Visit Assimilator HDRassimilator.com
8

Roxio / Creator NLE Color Grading

editor grading

Roxio Creator workflows include color correction tools and color grading controls inside its video editing suite for editing-focused color finishing.

Overall Rating7.4/10
Features
7.1/10
Ease of Use
7.6/10
Value
7.6/10
Standout Feature

Timeline-integrated primary color correction that keeps grading inside Creator NLE.

Roxio Creator NLE Color Grading stands out by integrating color grading tools into a broader non-linear editing workflow rather than offering a standalone grading suite. The core grading feature set includes primary corrections and common look-shaping controls suitable for finishing edits for video timelines. Its workflow focuses on practical adjustments that support faster review rounds within an editor-centric interface. Advanced, film-grade-style capabilities such as deep node graph color pipelines are not the emphasis compared with dedicated grading platforms.

Pros

  • Editor-integrated grading tools reduce round-trips between applications
  • Primary color controls support quick creative look adjustments
  • Timeline-based workflow supports iterative review on edited sequences

Cons

  • Limited depth for advanced color grading workflows compared with dedicated suites
  • Node-based grading and power-user masking tools are not a core focus
  • Scene-level and pipeline workflows feel less robust than pro ecosystems

Best For

Small teams finishing edits who want integrated, practical grading.

Official docs verifiedFeature audit 2026Independent reviewAI-verified
9

Frame.io

review collaboration

Frame.io supports review workflows with annotations and approvals that enable colorists and editors to iterate on graded versions using shared feedback.

Overall Rating7.1/10
Features
7.2/10
Ease of Use
7.2/10
Value
6.8/10
Standout Feature

Frame-accurate comments and approvals on video timelines

Frame.io stands out by centering review and approval workflows on top of video and still delivery rather than offering a dedicated color grading timeline. It supports frame-accurate comments, annotations, and approvals across uploaded media, which can guide grading decisions with tight feedback loops. The platform also integrates with common post-production tools so colorists and editors can move assets between review and production environments. Colorists get useful context and decision tracking, but Frame.io does not replace full-featured color grading engines like node-based grading suites.

Pros

  • Frame-accurate notes help translate color tweaks into exact frames
  • Annotation tools support paint and arrow guidance for grading feedback
  • Permissions and approvals create auditable sign-off per delivery version

Cons

  • No node-based grading controls for primary or secondary color correction
  • Review workflow can add overhead when rapid iterative grading is needed
  • Color data management depends on external grading tools for actual changes

Best For

Post teams needing structured color feedback and approvals across revisions

Official docs verifiedFeature audit 2026Independent reviewAI-verified

How to Choose the Right Color Grading Software

This buyer’s guide covers how to choose color grading software tools across timeline-integrated editors, node-based grading systems, film-emulation plugins, reference-matching workflows, HDR monitoring tools, and review platforms. It also maps common production needs to specific options including Lightworks, Colorlab, FilmConvert, ColorTrace, Magic Bullet Colorista, Mocha Pro, Assimilator HDR, Roxio Creator NLE Color Grading, and Frame.io.

What Is Color Grading Software?

Color grading software shapes image tone and color using primary and secondary corrections, look controls, and monitoring tools so footage matches a target intent. These tools solve problems like inconsistent exposure across shots, shot-to-shot color mismatch, and incorrect tone mapping for HDR delivery. Timeline-integrated solutions like Lightworks and Roxio Creator NLE Color Grading keep grading close to the edit. Node-based color workflows like Colorlab focus on structured, repeatable look construction across complex timelines.

Key Features to Look For

These features matter because the best tools align grading control style, reference workflows, and output needs with real production timelines.

  • Timeline-integrated grading with scopes for real-time correction

    Lightworks excels with integrated timeline grading plus scopes for evaluating exposure, contrast, and color balance while staying on the edit timeline. Roxio Creator NLE Color Grading also emphasizes timeline-based primary color correction for faster finishing loops.

  • Node graph structure for organized primary and secondary corrections

    Colorlab centers grading on a node-based structure that keeps complex looks organized across multiple clips. This structure supports consistent primary shaping and secondary refinements for shot-to-shot look continuity.

  • Camera and lens-aware film emulation with grain and halation controls

    FilmConvert uses camera and lens data to drive cinematic transformations with grain, halation, and highlight behavior. This makes it effective for fast, filmic look creation inside existing NLE or grading hosts.

  • Reference tracing workflows for repeatable shot matching

    ColorTrace focuses on palette-driven grading and reference comparison so the same intent can be traced across scenes. This approach reduces steps for teams that match color using reference images rather than fully manual grading.

  • Real-time one-click looks with selective color enhancement controls

    Magic Bullet Colorista provides one-click looks combined with live parameter controls for quick stylistic iteration. Its targeted color adjustments and secondary enhancement tools support fast look refinement for shorter projects.

  • Motion-tied masking workflows that generate tracked mattes for localized grading

    Mocha Pro provides planar tracking that creates stable masks for moving subjects. Tracked mattes then drive localized color adjustments tied to motion, which suits VFX shots requiring selective correction.

How to Choose the Right Color Grading Software

The best choice matches the grading workflow style to the production problem, then checks that the tool’s control depth and pipeline fit the required output.

  • Match the grading workflow style to the edit pipeline

    Choose Lightworks if the workflow must grade inside the editing timeline using scopes and timeline clip tracking for faster revisions. Choose Roxio Creator NLE Color Grading if finishing requires practical primary color controls inside a broader NLE timeline rather than a dedicated node-first grading suite.

  • Select control architecture based on how complex the looks must stay

    Choose Colorlab when a node graph grading structure is needed to keep primary and secondary corrections organized across multi-clip projects. Choose FilmConvert when the priority is camera and lens-aware film emulation with grain and halation rather than deep manual node-based shot matching.

  • Plan for shot matching using references or matching transforms

    Choose ColorTrace when teams must transform reference images into palette-driven, traceable grading adjustments across multiple shots. Choose Colorlab when matching must be built from structured primary and secondary corrections that remain editable in a node workflow.

  • Decide whether motion tracking drives the color workflow

    Choose Mocha Pro when localized color correction must follow motion because planar tracking generates stable mattes for moving subjects. Use Assimilator HDR when the main goal is HDR grading and tone mapping with calibration-aware monitoring rather than motion-compensated masking.

  • Separate grading engines from review and approvals

    Choose Frame.io when the priority is frame-accurate comments and approvals that create auditable sign-off across graded versions. Keep grading in a dedicated engine like Lightworks, Colorlab, FilmConvert, or Assimilator HDR because Frame.io does not provide node-based primary and secondary color correction controls.

Who Needs Color Grading Software?

Color grading software supports different roles and deliverables, from editor-led finishing to dedicated color pipelines and HDR mastering workflows.

  • Editors and small teams needing grading continuity inside the timeline

    Lightworks is built for integrated timeline grading with scopes and tracked grading through timeline clips, which reduces context switching during finishing. Roxio Creator NLE Color Grading also targets timeline-based primary color correction for practical iterative review inside an editor-centric workflow.

  • Color grading teams that need repeatable, organized look construction across many clips

    Colorlab is designed for node graph grading with integrated primary and secondary correction controls that keep complex looks organized. This suits teams matching shot-to-shot color and maintaining consistent structure across large timelines.

  • Editors who want fast cinematic film looks with camera-aware emulation

    FilmConvert provides film-style transformations using camera and lens data plus grain, halation, and highlight controls. This matches editors who want reusable cinematic looks refined through straightforward parameter changes.

  • Compositors and VFX workflows requiring localized color tied to motion

    Mocha Pro generates planar tracking mattes that enable tracked, localized color adjustments tied to movement. This fits compositing-driven pipelines where selective correction must stay stable on moving subjects.

Common Mistakes to Avoid

Common failure points come from choosing the wrong control model for the task, underestimating workflow overhead, or assuming review tools can replace grading engines.

  • Choosing a review platform for grading instead of using it for approval

    Frame.io provides frame-accurate comments and approvals but it does not include node-based primary or secondary color correction controls. Use Frame.io for feedback tracking and approvals, then perform the actual grading in Lightworks, Colorlab, FilmConvert, or Assimilator HDR.

  • Overbuilding node complexity when simple, real-time look iteration is the priority

    Colorlab’s node graph can slow navigation on large projects if the workflow needs fast creative direction. For fast iterative looks, Magic Bullet Colorista emphasizes one-click looks with live parameter controls.

  • Buying a motion-tracking tool when localized correction is not required

    Mocha Pro adds workflow overhead because planar tracking and matte refinement become unnecessary when the correction is global. For non-tracked finishing, Lightworks and Roxio Creator NLE Color Grading keep grading directly tied to the timeline without tracking steps.

  • Confusing film-emulation workflows with physically grounded color management depth

    FilmConvert targets cinematic film emulation with grain and halation, which can require external steps for advanced color management pipelines. For teams that must maintain structured correction logic, Colorlab’s primary and secondary corrections provide a more organized node-based foundation.

How We Selected and Ranked These Tools

we evaluated every tool on three sub-dimensions. Features carry a weight of 0.4. Ease of use carries a weight of 0.3. Value carries a weight of 0.3 and the overall rating is the weighted average computed as overall = 0.40 × features + 0.30 × ease of use + 0.30 × value. Lightworks separated itself through integrated timeline grading with scopes for real-time correction, which scored strongly in the features dimension because it reduces round-trips and keeps grading decisions tied to the timeline while measuring exposure, contrast, and color balance.

Frequently Asked Questions About Color Grading Software

Which color grading software supports timeline-based grading so edits and grades stay aligned?

Lightworks and Roxio Creator NLE integrate grading into non-linear editing timelines. Lightworks focuses on consistent round-tripping between the edit and grade, while Roxio Creator NLE emphasizes practical primary corrections inside the editor-centric workflow.

Which tools are strongest for node-based primary and secondary color corrections with repeatable structure?

Colorlab is built around node-based grading with dedicated controls for primary and secondary correction. Colorlab’s UI emphasizes balancing and matching looks across a timeline, while Lightworks also uses a controlled node-like workflow with scopes for real-time primary and secondary refinement.

Which software is best for creating cinematic film looks with lens- and camera-aware behavior?

FilmConvert targets cinematic transformations with camera and lens-aware film emulation. It includes film grain and halation behavior and supports LUT-style output so looks can be refined and reused across shots.

Which option helps teams match shots using reference images with fewer manual steps?

ColorTrace is designed for guided reference workflows that turn reference images into actionable grading adjustments. It uses palette-driven grading and reference comparison to improve repeatability when matching shots across a sequence.

Which tool delivers fast real-time grading using looks and targeted selective controls?

Magic Bullet Colorista provides one-click looks with live parameter controls for rapid stylistic changes. It also includes selective secondary enhancements that help refine specific color ranges without rebuilding the entire grade.

What software is best when color correction must follow motion in VFX shots?

Mocha Pro is built for planar tracking and motion tracking that generates mattes for localized color correction. Its tracking masks carry into downstream color operations so grading adjustments remain tied to moving elements.

Which software is designed for HDR monitoring and display-referred grading workflows?

Assimilator HDR targets display-referred HDR color workflows with calibrated grading playback and monitoring tools. It supports tone mapping and repeatable transforms for consistent HDR evaluation across devices.

Which tool is better for structured feedback and approvals across revisions instead of building the grade timeline?

Frame.io focuses on frame-accurate comments, annotations, and approval tracking on uploaded media. It supports feedback loops that guide grading decisions but does not replace dedicated grading engines like Colorlab’s node-based corrections.

Which approach works best when localized correction needs to be stable across moving subjects?

Mocha Pro handles stability by pairing tracking with matte-driven color correction tied to motion. ColorTrace complements this by using reference comparisons to keep matched shots consistent, but Mocha Pro is the better fit when movement is the primary challenge.

Conclusion

After evaluating 9 art design, Lightworks stands out as our overall top pick — it scored highest across our combined criteria of features, ease of use, and value, which is why it sits at #1 in the rankings above.

Our Top Pick
Lightworks

Use the comparison table and detailed reviews above to validate the fit against your own requirements before committing to a tool.

Keep exploring

FOR SOFTWARE VENDORS

Not on this list? Let’s fix that.

Our best-of pages are how many teams discover and compare tools in this space. If you think your product belongs in this lineup, we’d like to hear from you—we’ll walk you through fit and what an editorial entry looks like.

Apply for a Listing

WHAT THIS INCLUDES

  • Where buyers compare

    Readers come to these pages to shortlist software—your product shows up in that moment, not in a random sidebar.

  • Editorial write-up

    We describe your product in our own words and check the facts before anything goes live.

  • On-page brand presence

    You appear in the roundup the same way as other tools we cover: name, positioning, and a clear next step for readers who want to learn more.

  • Kept up to date

    We refresh lists on a regular rhythm so the category page stays useful as products and pricing change.