# Unit Converter - Best Unit App — Convert All Units and Currency > Comprehensive unit and currency converter with daily live exchange rates. (iPhone/iPad app by Alan Mrvica.) - Source: https://appshunter.io/ios/app/unit-converter-best-unit-app/id623691968 (this page in markdown: same URL + `.md`) - Developer: [Alan Mrvica](https://appshunter.io/developer/593306623) - Category: Travel, Utilities - Price: Free with in-app purchases - Rating: 4.80/5 from 191,661 App Store ratings · 1,598 written reviews indexed - Age rating: 4+ - Requires: iOS 17.0 · 13 MB - Languages: American English - Released: 2013-03-26 - Data updated: 2026-08-30 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/unit-converter-best-unit-app/id623691968/reviews.md ## What is Unit Converter? This is Units Plus Converter SWAP units by pressing button on keypad (lower left) ***Now with LIVE Currency Updates for all major currencies in the world*** Very simple and beautifully designed unit converter with 20 categories and many different units: CONVERT: *Angle *Area *Currency (155 world currencies updated every day.) *Data-computer data (byte, kilobyte, megabyte, etc.) *Data-Network Speed *Energy *Force *Fuel-Mileage *Length *Pants *Power *Pressure *Shoes *Speed *Temperature *Time (days, weeks, hours, etc.) *Tops-Clothing *Torque *Volume (dry and wet) *Weight-mass Currency exchange rates are downloaded once a day when app is opened. Every download uses very small amount of data. Around 1-2kb. Internet connection required. 155 currencies available - This is all world currencies with their respective country flags. ## Key features - 20 conversion categories - Live currency updates - 155 world currencies - Daily exchange rate refresh - Simple and beautiful design - Swap units functionality ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Premium | $24.99 | per year | | Premium | $3.99 | per month | | Premium | $34.99 | per year | | Premium | $6.99 | per month | ## Chart rankings - #92 in Top Grossing · Travel (US App Store) ## What do users think of Unit Converter? Overall sentiment: positive **Pros** - 🚀 Easy to use - 👍 Comprehensive conversions - 💡 Useful for travel and cooking - 🚀 Quick and efficient - 👍 Intuitive interface **Cons** - 🐛 Limited character input - 🐛 Difficulty with negative numbers - 💡 Lack of ability to quickly switch between conversions - 💰 Pro version not worth the cost **Commonly reported bugs** - Forced 5-star review prompt - Inaccurate weight/stone conversion **Most requested features** - Add calorie/kJ conversion - Allow negative number input - Improve ability to quickly switch between conversions ## Recent user reviews (10 of 1,598) All indexed reviews: https://appshunter.io/ios/app/unit-converter-best-unit-app/id623691968/reviews.md ### 2/5 — Rates are wrong *2026-08-28, version 10.2* The rates are completely out and wrong. Update the currency conversion rates please!! ### 5/5 — Superb!!!😉 *2026-08-28, version 10.2* Incredible useful! Great tool! ### 1/5 — Stop Porn! *2026-08-26, version 10.2* Good converter but the ads at the bottom of the app ARE DISGUSTING PORNOGRAPHY!!! I am dropping this app!!! ### 5/5 — My little helper *2026-08-25, version 10.2* This app has saved me over and over from purchasing items that are described in the metric system ### 5/5 — Converter app *2026-08-25, version 10.2* The app has been great. I have used it for several years to convert information daily for R&D purposes. It’s fast and easy to use. ### 2/5 — Where’d the zero go???? *2026-08-24, version 10.2* This app has been an absolute go to for conversions. Just recently on my app the zero in the key pad is missing. WTH! Why? ### 5/5 — Keith *2026-08-24, version 10.2* I’ve been using Units for years for everything from construction work to cooking. It’s been one of my best resources. Highly recommended! ### 5/5 — Converter *2026-08-23, version 10.2* Great App, very useful, especially weights and currency. ### 2/5 — Temu Ad *2026-08-23, version 10.2* The Temu ad at the bottom is hiding some of the numbers ### 5/5 — Great Tool *2026-08-22, version 10.2* I’ve used this converter for 10 years or so. Thanks ## Frequently asked questions about Unit Converter ### What does this app do? This app is a comprehensive unit and currency converter. It allows you to convert between a wide variety of units across 20 different categories, such as length, weight, temperature, and area. It also provides live updates for currency exchange rates for 155 world currencies. ### What are the key features of this unit converter? Key features include conversion for 20 categories of units, live daily updates for 155 world currencies, a simple and beautifully designed interface, and the ability to easily swap units with a button press on the keypad. ### How does the currency conversion work and is it free? Currency exchange rates are downloaded once a day when the app is opened, requiring an internet connection. Each download uses a very small amount of data. The app is free to download and use, but may offer in-app purchases or contain ads. ### What types of units can I convert? You can convert units across 20 categories including Angle, Area, Currency, Data (computer and network speed), Energy, Force, Fuel-Mileage, Length, Pants, Power, Pressure, Shoes, Speed, Temperature, Time, Tops-Clothing, Torque, Volume, and Weight-mass. ### Is an internet connection required to use the app? An internet connection is required to download the daily currency exchange rates. Once downloaded, you can perform unit conversions offline. The data usage for currency updates is minimal, around 1-2kb per download. ## Version history (last 5 releases) ### 10.2 — 2025-12-02 Fixed typo error in Weight category ### 9.9 — 2025-08-11 Fixed formatting bug in number input Optimized text and icon sizes for smaller displays ### 9.8 — 2025-08-05 Fixed decimal input for some countries that use comma instead of dot. Added review and share capabilites. ### 9.7 — 2025-07-29 Added many more conversion units and categories Search all units Favorites Fractions Compound units, such as: ft-in Remove or add units on main screen Calculator Dark or Light mode ### 3.8 — 2021-03-28 -Added App Privacy Requirements -Screen Resolution support for iPhone 12 series ## Apps similar to Unit Converter | App | Rating | Price | Category | | --- | --- | --- | --- | | [Unit Converter - Convert all](https://appshunter.io/ios/app/unit-converter-convert-all/id417794697) | 4.6 (13,462) | Free | Travel | | [CalConvert: Currency Converter](https://appshunter.io/ios/app/calconvert-currency-converter/id426007025) | 4.6 (6,446) | Free | Travel | | [Currency converter calculator!](https://appshunter.io/ios/app/currency-converter-calculator/id1457309557) | 4.7 (69,565) | Free | Travel | | [My Currency Converter & Rates](https://appshunter.io/ios/app/my-currency-converter-and-rates/id549019596) | 4.9 (128,513) | Free | Travel | | [Convert Any Unit Lite](https://appshunter.io/ios/app/convert-any-unit-lite/id478222820) | 4.7 (48,108) | Free | Travel | | [Currency converter: Exchange](https://appshunter.io/ios/app/currency-converter-exchange/id1022760167) | 4.8 (4,954) | Free | Travel | ## More apps by Alan Mrvica - [Units Plus Converter](https://appshunter.io/ios/app/units-plus-converter/id593306620) - [Tip Calculator Master % - Best Bill Splitting App](https://appshunter.io/ios/app/tip-calculator-master-best-bill-splitting-app/id837804573) - [Big Digits Tape Calculator](https://appshunter.io/ios/app/big-digits-tape-calculator/id977537994) - [Currency Plus Exchange Rate](https://appshunter.io/ios/app/currency-plus-exchange-rate/id1493213950) - [Clock Widget - Funky Colors](https://appshunter.io/ios/app/clock-widget-funky-colors/id1533354601) All apps by Alan Mrvica: https://appshunter.io/developer/593306623 ## Related topics [weight converter](https://appshunter.io/ios/topics/weight-converter) · [conversion chart](https://appshunter.io/ios/topics/conversion-chart) · [weight converter unit](https://appshunter.io/ios/topics/weight-converter-unit) · [conversion calculator free](https://appshunter.io/ios/topics/conversion-calculator-free) · [measure converter](https://appshunter.io/ios/topics/measure-converter) · [area converter](https://appshunter.io/ios/topics/area-converter) · [conversion calculator](https://appshunter.io/ios/topics/conversion-calculator) · [pressure converter](https://appshunter.io/ios/topics/pressure-converter) · [measure converter app](https://appshunter.io/ios/topics/measure-converter-app) · [length measure converter](https://appshunter.io/ios/topics/length-measure-converter) · [weight converter app](https://appshunter.io/ios/topics/weight-converter-app) · [measurement converter](https://appshunter.io/ios/topics/measurement-converter) · [unit of measurement converter](https://appshunter.io/ios/topics/unit-of-measurement-converter) · [length converter plus](https://appshunter.io/ios/topics/length-converter-plus) · [gram converter](https://appshunter.io/ios/topics/gram-converter) · [us gallons to liters](https://appshunter.io/ios/topics/us-gallons-to-liters) · [units converter](https://appshunter.io/ios/topics/units-converter) · [units convertion](https://appshunter.io/ios/topics/units-convertion) · [units conversion chart](https://appshunter.io/ios/topics/units-conversion-chart) · [metric to imperial units converter](https://appshunter.io/ios/topics/metric-to-imperial-units-converter) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-30.*