179+ iOS apps curated and reviewed
Every iPhone needs a few good unit conversion lab apps. We benchmark 179+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | β | Yes | No | May 2026 |
| 2 |  | $1.99 | 4.9β (145) | No | No | Jul 2026 |
| 3 |  | Free | 4.6β (16K) | No | Yes | Jul 2026 |
| 4 |  | Free | 4.7β (47K) | Yes | No | Jul 2026 |
| 5 |  | Free | 3.6β (150) | Yes | Yes | Jul 2026 |
| 6 |  | Free | 4.8β (97) | No | No | Jul 2026 |
| 7 |  | $19.99 | 4.9β (8.3K) | No | No | Jul 2026 |
| 8 |  | Free | 4.7β (642) | Yes | Yes | Jul 2026 |
Easily convert between hundreds of units and currencies with lightning-fast results. This app offers an ultra-sleek design and supports various unit variations for US, UK, and Canada. Quickly find and convert with its intuitive search feature.
This app offers a powerful and user-friendly unit converter with 16 categories, including currency, length, and temperature. It allows for custom unit lists and provides live exchange rate updates for 148 currencies. Unlock all features with a one-time in-app purchase.
Quickly convert between thousands of units with an intelligent search and autocomplete feature. This app offers a streamlined interface, an integrated calculator, and the ability to save favorite conversions. It supports over 6,400 units across 51 categories, making it a comprehensive tool for all your conversion needs.
Easily convert between hundreds of units across 43 categories, including currency with daily updated rates. Customize your workflow by hiding or reordering units and categories.
This app offers a comprehensive unit and currency conversion tool with a visually appealing interface and extensive unit options. It supports standard and non-standard units, compound conversions, and fraction input, making it versatile for various needs.
Easily convert between various units and currencies with a simple, intuitive interface. Features live currency updates for 155 world currencies, refreshed every 15 minutes. Optimized for a wide range of Apple devices, including iPads with Split View support.
Easily convert over 700 units across 30 categories with this powerful tool. It offers a user-friendly interface, dark mode support, and a backspace key for quick corrections. Save time on all your measurement conversion needs.
This free app offers lightning-fast unit and currency conversions with an ultra-sleek design. Easily convert essential units and currencies with just a few taps, making it a delightful and efficient tool for your iOS device.
This app offers a comprehensive unit conversion tool with over 300 units across 27 categories. It supports compound units, date calculations, and conversions between various number systems, including historical units. The interface is designed for ease of use with smart keyboards and customizable display options.
A straightforward unit converter designed for ease of use and efficiency. It offers a wide range of conversion options without any advertisements, saving battery and data. All conversions are performed on a single, intuitive screen.
Easily convert between a wide range of units across 20 categories, including length, weight, temperature, and more. Features live currency updates for 155 world currencies, refreshed daily. Designed for simplicity and visual appeal.
This app offers a comprehensive solution for converting units across more than 20 common categories, including over 400 units. It supports mixed units and currency exchange with real-time updates, making it useful for work, study, and daily life. The app features a scientific calculator and a user-friendly interface.
Easily convert between metric and imperial units for a wide range of measurements including area, speed, temperature, and weight. Supports scientific prefixes and offers a history of your conversions. No internet connection required.
This app offers a simple and powerful way to convert between over 140 units across 12 categories. Easily switch between units, customize your experience with themes, and share your results.
This app is a comprehensive unit conversion tool supporting a wide range of categories including length, weight, currency, and chemistry. It offers an intuitive interface with features like favorite conversions for quick access and a built-in calculator. Optimized for various Apple devices, it aims to simplify everyday calculations.
Easily convert over 160 currencies and 350 physical units with real-time updates and offline capabilities. Create a favorites list for quick access to frequently used conversions and enjoy geo-based currency options. An ad-free version is available for purchase.
Effortlessly convert between hundreds of units across 26 essential categories with this precision calculator. Designed for speed and simplicity, it offers accurate results in seconds for students, professionals, and travelers alike. Enjoy offline functionality and a customizable experience.
Effortlessly convert units with this intuitive and lightweight tool. Get real-time results for over 700 units across 30+ categories displayed simultaneously. Customize your conversion lists and access your history.
This app offers precise and powerful unit and currency conversion with over 600 conversion types. Save frequent conversions as favorites and access them easily from the home screen. It provides real-time currency rates and historical graphs, with customizable decimal points and calculator functionality.