250+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our scientific calculator fx-991ex list covers 250+ iPhone apps updated through October 2026. Compare ratings, prices, and screenshots in one place.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 2.3★ (3) | No | Yes | Sep 2026 | |
| 2 |  | Free | — | No | Yes | Aug 2026 | |
| 3 |  | Free | 4.6★ (415) | Yes | Yes | Oct 2026 | |
| 4 |  | Free | 4.7★ (12K) | Yes | Yes | Oct 2026 | |
| 5 |  | Free | — | No | No | Sep 2026 | |
| 6 |  | Free | — | No | No | Sep 2026 | |
| 7 |  | Free | — | No | No | Sep 2026 | |
| 8 |  | Free | 4.8★ (1.9K) | Yes | No | Oct 2026 |
This academic calculator displays mathematical expressions in natural textbook format, including fractions and roots. It provides exact form results and supports complex numbers, trigonometry, and advanced math functions. Store values in variables and access calculation history.
This app provides a powerful scientific calculator with step-by-step solutions for equations, advanced functions, and graphing capabilities. It includes a formula library and unit converter, inspired by a popular Casio model, to aid in learning and problem-solving for math and science subjects.
