244+ iOS apps curated and reviewed
The best temperature converter apps on iPhone average 4.5★ across 244+ 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 |  | Free | 4.7★ (119) | No | Yes | Sep 2026 | |
| 2 |  | Free | 4.8★ (6.3K) | No | Yes | Sep 2026 | |
| 3 |  | Free | 5.0★ (4) | No | No | Sep 2026 | |
| 4 |  | Free | 4.8★ (193K) | Yes | Yes | Sep 2026 | |
| 5 |  | Free | 4.6★ (1.6K) | Yes | Yes | Sep 2026 | |
| 6 |  | Free | 4.4★ (33) | Yes | No | Sep 2026 | |
| 7 |  | Free | 2.5★ (2) | No | No | May 2026 | |
| 8 |  | Free | 3.5★ (4) | No | Yes | May 2026 |
Easily convert temperatures between Celsius and Fahrenheit with instant results. The app visually indicates the temperature using background color and offers adjustable precision. Home screen widgets provide quick access to conversions without any advertisements.
Easily convert temperatures between Celsius, Fahrenheit, and Kelvin with a clean and intuitive interface. This utility app offers quick and accurate conversions for everyday use. Ads are present but can be removed via a one-time purchase.
This utility app offers a straightforward way to convert between multiple temperature units simultaneously. It features a dedicated numeric keyboard with support for negative numbers and decimals, ensuring quick and accurate conversions for various scientific and travel needs.
