250+ iOS apps curated and reviewed
Alt is the household name in joshua hinman, but it's far from the only option. We track 250+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.5★ (8) | No | No | Aug 2026 | |
| 2 |  | Free | — | No | No | May 2026 | |
| 3 |  | Free | 4.6★ (726) | No | No | Sep 2026 | |
| 4 |  | Free | 3.9★ (7) | No | No | Sep 2026 | |
| 5 |  | Free | 4.9★ (14) | No | Yes | Oct 2026 | |
| 6 |  | Free | — | Yes | No | May 2026 | |
| 7 |  | Free | 4.7★ (38) | No | Yes | Sep 2026 | |
| 8 |  | Free | 4.6★ (5) | No | No | Jun 2026 |
This app calculates your precise altitude above sea level using your device's barometer or GPS. It offers a realistic, retro design and automatically calibrates for local atmospheric pressure, with optional manual calibration for advanced users.
Enhance your mathematical understanding with a comprehensive reference covering 23 subjects, over 200 articles, and interactive illustrations. Explore detailed explanations, solved problems, and proofs to master concepts from algebra to calculus. Access all content and features with a premium upgrade.
