250+ iOS apps curated and reviewed
Out of 250+ s4s user 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 | — | No | No | Sep 2026 | |
| 2 |  | Free | 4.8★ (19) | No | No | Oct 2026 | |
| 3 |  | Free | 5.0★ (45) | No | No | Jul 2026 | |
| 4 |  | Free | 4.0★ (4) | No | No | Aug 2026 | |
| 5 |  | Free | 2.4★ (38) | No | No | Sep 2026 | |
| 6 |  | Free | 1.0★ (1) | No | No | Sep 2026 | |
| 7 |  | Free | 4.9★ (7) | No | No | Aug 2026 | |
| 8 |  | Free | 4.8★ (5) | No | No | May 2026 |
Transform your phone into a digital scale for quick and easy gram measurements. Ideal for everyday tasks like cooking, baking, or weighing small items without needing a separate device.
This medical app assists healthcare professionals in calculating essential ventilator settings and medication dosages for critical care. It provides rapid, accurate results for paramedics, respiratory therapists, nurses, and doctors, streamlining patient management.
