246+ iOS apps & games curated and reviewed
The best nejm image challenge apps and games on iPhone average 3.2★ across 246+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | $9.99 | 4.8★ (9) | No | No | Aug 2026 |
| 2 |  | Free | 4.9★ (11K) | No | No | Aug 2026 |
| 3 |  | Free | — | Yes | No | May 2026 |
| 4 |  | Free | — | No | Yes | Jul 2026 |
| 5 |  | Free | — | No | No | May 2026 |
| 6 |  | Free | — | No | Yes | May 2026 |
| 7 |  | Free | — | No | No | May 2026 |
| 8 |  | Free | — | No | No | May 2026 |
Test and sharpen your diagnostic and visual skills with challenging clinical photos. This app offers detailed images with zoom capabilities and immediate feedback on diagnoses. It's designed for medical professionals to practice anytime, anywhere.
This app provides healthcare professionals with evidence-based clinical decision support and medical information. It acts as a search engine, sourcing answers from peer-reviewed literature and leading medical organizations to aid in high-stakes medical decisions at the point of care.
Create and participate in photo-based challenges with friends and the global community. Earn likes to win challenges, potentially unlock prizes, and have your creations featured.
Perform reverse image searches to uncover the origin and usage of any photo. Identify subjects, find duplicate or edited versions across the web, and detect fake profile pictures.
Create epic photo collages comparing images from 10 years apart. This app helps you participate in the viral internet challenge by easily adding and adjusting photos of yourself, couples, or pets. Share your transformations across social media.
