242+ iOS apps curated and reviewed
The best a complex calc apps on iPhone average 4.3★ across 242+ titles — we've ranked them by what real users actually keep on their phones. Updated October 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.7★ (23) | No | No | Oct 2026 | |
| 2 |  | Free | 5.0★ (2) | No | No | Oct 2026 | |
| 3 |  | Free | — | No | Yes | Aug 2026 | |
| 4 |  | Free | — | No | No | Aug 2026 | |
| 5 |  | $1.99 | 3.0★ (4) | No | No | Oct 2026 | |
| 6 |  | Free | — | No | Yes | May 2026 | |
| 7 |  | Free | 3.9★ (24) | No | No | Oct 2026 | |
| 8 |  | Free | — | No | Yes | Sep 2026 |
Perform complex calculations with a modern, user-friendly interface. Offers both basic and scientific modes, including support for complex numbers and advanced functions. This lightweight application provides a history of computations and is completely free with no advertisements.
Perform advanced calculations with complex numbers, including conversions between rectangular and exponential forms. Features quick copy-paste functionality and automatic dark mode for a seamless user experience.
