250+ iOS apps curated and reviewed
PlexiSafe is the household name in plexisafe, 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 | — | — | No | Jul 2026 | |
| 2 |  | Free | — | No | Yes | Sep 2026 | |
| 3 |  | Free | 4.8★ (64) | Yes | Yes | Sep 2026 | |
| 4 |  | Free | 5.0★ (22) | No | No | May 2026 | |
| 5 |  | Free | 4.0★ (1) | No | No | May 2026 | |
| 6 |  | Free | 3.4★ (18) | No | No | May 2026 | |
| 7 |  | Free | — | No | Yes | Sep 2026 | |
| 8 |  | Free | — | No | Yes | Aug 2026 |
This utility app provides a comprehensive collection of engineering equations and formulas for students and professionals. Easily perform calculations by selecting a formula and inputting variables, with detailed instructions and reference material included.
