192+ iOS apps curated and reviewed
The best metric conversions premium apps on iPhone average 4.7★ across 192+ titles — we've ranked them by what real users actually keep on their phones. Updated July 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | $4.99 was $6.99 | 5.0★ (1) | No | No | Jul 2026 |
| 2 |  | Free | 4.8★ (15K) | No | No | Jul 2026 |
| 3 |  | Free | 4.8★ (172K) | Yes | Yes | Jul 2026 |
| 4 |  | Free | 4.6★ (13K) | Yes | Yes | Jul 2026 |
| 5 |  | Free | 4.7★ (47K) | Yes | No | Jul 2026 |
| 6 |  | Free | 4.7★ (1.9K) | No | Yes | Jul 2026 |
| 7 |  | Free | 4.9★ (897) | No | No | Jul 2026 |
| 8 |  | Free | 4.6★ (16K) | No | Yes | Jul 2026 |
This utility app offers a comprehensive suite of unit and currency conversions with a clean interface. It works offline and provides precise results, breaking down complex units into smaller components for detailed analysis. Users can save frequent conversions for quick access.
This app provides a comprehensive unit and currency converter with a user-friendly interface. It offers offline functionality, supports over 30,000 unit conversions, and includes more than 160 currencies with live exchange rates. Users can save favorite conversions and get precise results.
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.
Easily convert between various units of measurement, including currencies, temperature, length, and weight. This intuitive tool provides real-time currency exchange rates and a comprehensive list of conversions for everyday use.
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 76 measurement units across eight common types, including length, weight, temperature, and volume. Features a built-in calculator and optional currency conversion with daily exchange rate updates.
This app offers a comprehensive unit and hardness conversion tool with an easy-to-use interface. It includes currency conversion with updated exchange rates, over 300 engineering and scientific units, and a specialized hardness converter. Additional features like timezone conversion, pace calculation, and a standard calculator enhance its utility.
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.
This app offers advanced scientific calculation and comprehensive currency and unit conversion. It supports a wide range of measurements, global currencies, and includes features like history logs and home screen widgets for quick access.
This app is a versatile unit and currency converter with a user-friendly interface. It supports a wide range of conversion categories, including real-world and crypto currencies, with automatic exchange rate updates. Customize your experience with design options, dark mode, and adjustable home screen layouts.
This app offers fast and flexible conversions for over 1000 units across 70+ categories, including currencies. It features a built-in calculator, handles complex conversions, and allows for text searching of results. Customize your experience with searchable units and custom categories.
Transform your device into a versatile digital toolkit for precise measurements. Create 2D and 3D floor plans, scan rooms, and measure distances with advanced AI and computer vision. Ideal for DIY projects, home renovations, and professional use.
Easily convert between various units of measurement including length, weight, temperature, and currency. Features automatic currency updates, a vast selection of currencies, and customizable display options for accuracy and rounding. Optimized for multitasking on iPad and offers a beautiful dark design.
Easily capture and annotate object dimensions with photos. Store, organize, and share measurements with detailed comments and multiple detail photos. Ideal for professionals and DIYers needing precise documentation.
This app uses your phone's GPS to display your current speed accurately. It supports multiple units, shows traveled distance, and offers optional city names and a compass. You can also record trip statistics like maximum speed and distance.
Accurately measure distance, perimeter, and area using GPS, even offline. Mark points with notes and photos for field scouting, land inspection, or issue logging. Supports various export formats and custom map layers.
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 tool converts between decimals and fractions, and also handles unit conversions for construction and metric measurements. It offers an intuitive interface for calculations and editing, with advanced features available through upgrades.
Easily convert ingredients and cooking units between mass and volume, or metric and customary systems. This app supports over 1,500 ingredients and includes temperature and distance conversions, with a history of your past lookups.
This app offers over 50 practical tools to solve everyday problems, from measuring distances with AR to scanning documents and performing complex calculations. It includes features for navigation, unit conversion, and even a scrolling text display.