211+ iOS apps curated and reviewed
Whether you're new to stack rpn calculator or looking for an upgrade, our curated collection of 211+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 3.5★ (2) | No | No | May 2026 | |
| 2 |  | Free | 4.9★ (7) | Yes | No | May 2026 | |
| 3 |  | $1.99 | 4.7★ (899) | No | Yes | Sep 2026 | |
| 4 |  | $3.99 | 4.8★ (238) | No | No | Aug 2026 | |
| 5 |  | Free | 4.8★ (21K) | Yes | No | Sep 2026 | |
| 6 |  | Free | 3.4★ (208) | Yes | Yes | Sep 2026 | |
| 7 |  | Free | 4.7★ (25K) | No | Yes | Sep 2026 | |
| 8 |  | Free | 3.8★ (22) | No | No | Aug 2026 |
This scientific calculator displays major functions on screen and utilizes a stack for calculations. It supports a stack of up to 4 values but can store many more numbers depending on device memory.
This scientific calculator utilizes Reverse Polish Notation (RPN) for efficient complex calculations, mirroring the functionality of classic HP calculators. It features a continuously visible stack for better tracking and includes 10 memory registers, plus a dedicated quadratic equation solver.
This app offers a comprehensive suite of 12 calculators, including scientific, currency, unit, and finance functions. It features advanced modes, extensive formula support, and a user-friendly interface for all calculation needs.
