191+ iOS apps curated and reviewed
If you already know Simple RPN, this is the deeper bench. 191+ simple rpn apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of June 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | $2.99 | — | No | No | Jun 2026 | |
| 2 |  | Free | — | No | Yes | Sep 2026 | |
| 3 |  | Free | 4.7★ (1.7M) | Yes | Yes | Sep 2026 | |
| 4 |  | Free | 3.9★ (373) | No | Yes | Sep 2026 | |
| 5 |  | Free | 4.8★ (40K) | No | No | Sep 2026 | |
| 6 |  | Free | 4.8★ (63K) | No | Yes | Sep 2026 | |
| 7 |  | Free | 4.7★ (13K) | Yes | Yes | Sep 2026 | |
| 8 |  | Free | 4.3★ (4.6K) | No | No | Sep 2026 |
This utility app functions as a reverse Polish notation calculator. Users input numbers and operations using a stack-based interface to perform calculations. It's designed for straightforward mathematical tasks.
This app offers a comprehensive suite of calculation tools, including basic, scientific, and unit conversion functions. It features an AI-powered math solver that can solve problems from photos and a dedicated math notes section for jotting down equations and diagrams. Accessibility options like dynamic text size and VoiceOver support are also included.
