47+ iOS apps curated and reviewed
Out of 47+ r3 contrast apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (2) | No | No | Oct 2026 | |
| 2 |  | Free | 4.9★ (5.9M) | No | No | Oct 2026 | |
| 3 |  | Free | — | No | No | May 2026 | |
| 4 |  | Free | 4.5★ (15) | No | No | May 2026 | |
| 5 |  | Free | — | No | No | May 2026 | |
| 6 |  | Free | 4.9★ (8.8M) | No | No | Oct 2026 | |
| 7 |  | Free | 4.7★ (19M) | Yes | Yes | Oct 2026 | |
| 8 |  | Free | — | Yes | No | Oct 2026 |
This app helps users recalibrate their physical and mental state through contrast therapy. It offers an energizing and approachable experience designed to challenge the body, calm the mind, and build lasting routines for improved resilience and performance preparation.
Access a vast library of eBooks, magazines, and comics on your mobile device. Customize your reading experience with adjustable text, brightness, and page-turning options. Look up words, track progress, and sync across devices.
Calculate the required Luminance Reflectance Value (LRV) contrast between adjoining materials. Essential for architects, designers, and consultants to meet accessibility standards for low-vision individuals.
