234+ iOS apps curated and reviewed
|RPN| Scientific Calculator is the household name in scientific calculator free rpn, but it's far from the only option. We track 234+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | $0.99 | 2.3★ (3) | No | No | Oct 2026 | |
| 2 |  | Free | 3.9★ (24) | No | No | Oct 2026 | |
| 3 |  | $3.99 | 4.8★ (245) | No | No | Oct 2026 | |
| 4 |  | Free | 4.9★ (7) | Yes | No | May 2026 | |
| 5 |  | Free | 3.5★ (2) | No | No | May 2026 | |
| 6 |  | Free | — | No | Yes | Sep 2026 | |
| 7 |  | $4.99 | 4.7★ (48) | No | No | Oct 2026 | |
| 8 |  | Free | 3.4★ (210) | Yes | Yes | Oct 2026 |
This calculator app uses Reverse Polish Notation for powerful calculations. It offers customizable color schemes, layouts, and online help, designed for flexibility and usability. All features are unlocked with a one-time purchase.
This scientific calculator utilizes a four-level stack and natively handles complex numbers. It allows users to input and view numbers in both polar and rectangular formats, remembering its state and offering 10 memory locations.
This app offers a scientific calculator with Reverse Polish Notation (RPN) functionality, providing an alternative to the default calculator. It features a large, easy-to-read display, a 100-entry stack, and extensive undo/redo capabilities. Its design is inspired by classic HP calculators.
