249+ iOS apps curated and reviewed
The best calculateretro apps on iPhone average 4.6★ across 249+ titles — we've ranked them by what real users actually keep on their phones. Updated September 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | $1.99 | 4.5★ (15) | No | No | Aug 2026 | |
| 2 |  | Free | 4.8★ (83) | Yes | No | Aug 2026 | |
| 3 |  | Free | 4.4★ (51) | Yes | No | Sep 2026 | |
| 4 |  | $9.99 | 4.7★ (770) | No | Yes | Oct 2026 | |
| 5 |  | Free | 4.7★ (15K) | No | Yes | Oct 2026 | |
| 6 |  | Free | 4.8★ (21K) | Yes | No | Oct 2026 | |
| 7 |  | Free | 4.8★ (3.2K) | Yes | Yes | Oct 2026 | |
| 8 |  | Free | 4.7★ (270) | No | No | Oct 2026 |
This app allows users to track all their calculations with features like a backspace key, history printing, and PDF export. It supports Apple Watch, dark mode, and customization of display and fonts. Calculations can be shared via email or saved for later access.
Easily calculate sales tax and IVU for Puerto Rico, or any other tax rate, before making a purchase. This free, user-friendly tool also functions as a full arithmetic calculator and can incorporate discounts into your total price calculations.
Access a comprehensive suite of financial tools for personal and business use. Calculate loans, mortgages, investments, retirement savings, and more with ease. This app offers a wide range of specialized calculators for detailed financial analysis.
