Participate in cutting-edge medical research and access investigational treatments at no cost. Receive monetary compensation for your time and travel while contributing to future healthcare advancements.



249+ iOS apps curated and reviewed
Out of 249+ wellness clinical research 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★ (1) | No | No | May 2026 | ||
| 2 | Free | — | No | No | May 2026 | ||
| 3 | Free | 5.0★ (5) | No | No | Oct 2026 | ||
| 4 | Free | 4.7★ (48) | No | No | Oct 2026 | ||
| 5 | Free | — | No | No | Sep 2026 | ||
| 6 | Free | — | Yes | No | May 2026 | ||
| 7 | Free | 3.9★ (17) | No | No | Sep 2026 | ||
| 8 | Free | 4.2★ (1.5K) | No | No | Oct 2026 |



Participate in cutting-edge medical research and access investigational treatments at no cost. Receive monetary compensation for your time and travel while contributing to future healthcare advancements.








This app keeps you updated on the latest products, loyalty points, and exclusive savings from Theory Wellness. Receive timely alerts for deals and new launches to ensure you never miss important updates.