167+ iOS apps curated and reviewed
The best a complex calc apps on iPhone average 4.6★ across 167+ titles — we've ranked them by what real users actually keep on their phones. Updated July 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.7★ (23) | No | No | Aug 2026 | |
| 2 |  | Free | 5.0★ (2) | No | No | May 2026 | |
| 3 |  | Free | 4.6★ (10K) | Yes | Yes | Sep 2026 | |
| 4 |  | Free | 3.8★ (22) | No | No | Aug 2026 | |
| 5 |  | Free | 4.5★ (126K) | Yes | Yes | Sep 2026 | |
| 6 |  | Free | 3.9★ (28) | No | Yes | Aug 2026 | |
| 7 |  | Free | 4.7★ (494) | Yes | Yes | Aug 2026 | |
| 8 |  | Free | 4.8★ (3.2K) | Yes | 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.
This app offers a free basic and scientific calculator with an intuitive interface. It supports fractions, percentages, and advanced editing. Optional upgrades provide specialized calculators for fractions with units, polynomial and linear equation solving, graphing, and geometric shapes.
