Luna vs Colour Adjuster
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Luna
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Luna is designed to help neurodivergent learners revise more effectively. It keeps things simple, clear and led by scientific studies of best practices in education. Create your flashcards your way: manual, automatic, and colour coding are all available. Review your collections flexibly: custom reviews give you full control or smart scheduling sets reviews based on your deadline and developing confidence with the material. Learn more revision and techniques through expert-written guides, audio, and videos.
Colour Adjuster
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Closed-signup app for use in a lab study into colour vision at the University of Sussex.
Screenshots
Verdict
The clearest difference is ads: Luna at none against Colour Adjuster's shown. Luna also leads on update cadence (every 11 days vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Luna ships an update every 11 days, Colour Adjuster every 2 months. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.
| Parameter | Luna | Colour Adjuster |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 11 days — better | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 10 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | Booost Education Ltd | James Alvarez |
In-app purchases
Luna
No in-app purchases
Colour Adjuster
No in-app purchases
