# Conversion: Unit Converter — Currency, metric & imperial > A free unit converter with live currency exchange rates and extensive unit support. (iPhone/iPad app by Duncan Campbell.) - Source: https://appshunter.io/ios/app/conversion-unit-converter/id286552073 (this page in markdown: same URL + `.md`) - Developer: [Duncan Campbell](https://appshunter.io/developer/286552076) - Category: Utilities, Productivity - Price: $0.99 - Rating: 3.00/5 from 5 App Store ratings · 36 written reviews indexed - Age rating: 4+ - Requires: iOS 26.0 · 2 MB - Languages: American English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French (France), German (Germany) and 23 more - Released: 2019-01-31 - Data updated: 2026-09-08 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/conversion-unit-converter/id286552073/reviews.md ## What is Conversion? Type a number. Read the answer. That is the entire app. Conversion has been on the App Store since 2012. Version 4 is a complete rebuild — modern, quick, and still refreshingly free of clutter. BOTH UNITS, ALWAYS IN VIEW The two units face each other in the middle of the screen, right where you left them last time. Flick either one to change it, or tap an amount to turn the conversion around. Nothing to drill into. TWELVE CATEGORIES, 96 UNITS Length · Area · Volume · Weight · Temperature · Speed · Pressure · Power · Energy · Time · Computing — and Currency, with more than 160 world currencies. LIVE EXCHANGE RATES Rates refresh on their own and are stored on your device, so conversions still work on a plane or underground. When a rate is out of date the app says so, rather than quietly handing you an old number. YOUR LANGUAGE, YOUR NUMBERS 33 languages. Unit names, decimal separators and numbering systems all follow your region — so a comma lands where a comma belongs, and Arabic and Devanagari numerals are drawn properly. BUILT FOR iOS 26 Liquid Glass, a color for every category, fluid animation, haptics, and Dark Mode throughout. ACCESSIBLE FROM THE START Every control is labeled for VoiceOver. Text scales to the largest accessibility sizes. Reduce Motion is respected. A hardware keyboard drives the whole app. NOTHING COLLECTED No account, no ads, no analytics, no tracking. The app makes one kind of network request — for published exchange rates — and it carries nothing about you. Pay once. No subscription. ## Key features - Extensive unit categories (12 categories, 96 units) - Live, offline-capable currency exchange rates - Supports 33 languages and regional number formats - Modern, clutter-free interface with fluid animations - Full VoiceOver and accessibility support - No ads, analytics, or tracking ## Recent user reviews (10 of 36) All indexed reviews: https://appshunter.io/ios/app/conversion-unit-converter/id286552073/reviews.md ### 3/5 — Currency conversion is worthless *2018-10-01* The program does not update exchange rates, it appears that conversion feature is years out of date. The program does not have a significant number of prefixes/powers for each unit (i.e. milli centi deci deka kilo etc). It would be nice to select the base unit like “gram” then select the precision. ### 5/5 — Very handy *2017-05-04* Very useful everyday conversion app easy to use.. the hidden flatulence engine is a surprise bonus. ### 5/5 — Works great for me *2016-08-20* I love this app. I've had it for over five years now (I think). Had a different one before but preferred this to it. I have to be clear though, I only ever use it for volume, distance, and weight and for these it works fantastically every time. Never crashes or gives me bad information. ### 1/5 — Currency Problems *2015-08-05* I cannot recommend purchase of this app. I bought this app because I wanted to do on the fly currency conversions with my Apple Watch, and it was recommended highly in a Computerworld article entitled the top 23 Apple Watch apps you should get. However, when I tried it today in China, it was more than 10% off today’s USD-CNY exchange rate. I’m glad I didn’t make any decisions using that exchange rate today. Could have cost me big. With no real support, I had to delete it. ### 2/5 — Out of Date Currencies *2015-07-15* I would have given a 5-star rating but clicking on the support link took me to a blog, it looks like, not any support for the app. I was going to ask how to update the app's currency rates because they're out of date. I like how much the app has the potential to do, but out of date info and no support.. I give it 2 stars. Plus I paid for this. ### 3/5 — Bring back the favourites! *2012-12-11* It's a great app, complete, but since the last update, it is not possible to choose our favourite conversions... Please add the feature back! ### 1/5 — Conversion *2011-11-08* Doesnt work at all just says waiting for 4 days now , Apple said contact the developer if you use those links there is no help or contact at all just some sort of home page with kids pictures.. DONT WASTE YOUR MONEY ON THIS USLESS APP!! ### 5/5 — very useful app *2011-02-26* i have had this app since the app store opened, and it has been perfect. is also has a great UI and a clean icon. if you’re like me you’ll make good use of it. (there was one update that had a annoying sound effect but it was later fixed so this means the developers are actually listening) i am however wondering why they are now selling it for $5 (it was $1 for a very long time) — the competition for this type of application is fierce. maybe put it on your watch list for when it goes on sale! :) ### 1/5 — Just a few more? *2009-06-20* This is very handy. Would be perfect for me if it could convert from chains, links, roods and perches ### 5/5 — Worth the money *2009-02-11* This app is well worth the money ## Frequently asked questions about Conversion ### What is Conversion: Unit Converter? Conversion: Unit Converter is a paid utility app designed for quick and accurate conversions between various units like length, weight, temperature, and currency. It offers a clean interface and supports 33 languages. ### How much does Conversion: Unit Converter cost? Conversion: Unit Converter is a paid app priced at $0.99. The developer states it's a 'pay once' purchase with no subscription required. ### Does Conversion: Unit Converter have ads? No, Conversion: Unit Converter does not have ads. The developer explicitly states 'no ads, no analytics, no tracking' in the app description. ### What units can I convert with Conversion: Unit Converter? The app supports 12 categories and 96 units, including Length, Area, Volume, Weight, Temperature, Speed, Pressure, Power, Energy, Time, Computing, and over 160 world currencies. ### Does Conversion: Unit Converter work offline? Yes, currency conversions work offline as exchange rates are stored on your device. The app will indicate if a rate is out of date, ensuring you always have current information when available. ### What devices is Conversion: Unit Converter available on? Conversion: Unit Converter is built for iOS and is supported on iPhone and iPad devices. It is designed for iOS 26, featuring modern iOS functionalities. ### How often is Conversion: Unit Converter updated? The latest version, 4.0, was released on January 31, 2019, with the last update indicated as August 14, 2026. This suggests a stable, long-term support model for the application. ### Is Conversion: Unit Converter suitable for users with accessibility needs? Yes, Conversion: Unit Converter is built with accessibility in mind. Every control is labeled for VoiceOver, text scales to the largest accessibility sizes, and it respects Reduce Motion settings. ## Version history (last 5 releases) ### 4.0 — 2026-08-14 Version 4 is a complete rebuild. • Currency works again. The old rate source shut down years ago; rates now come from a live feed, refresh automatically, and keep working offline. • Redesigned for modern iPhone and iPad — Dark Mode, a color for every category, and an iPad layout that uses the whole screen. • Full VoiceOver, Dynamic Type and Reduce Motion support, plus hardware keyboard input. • 33 languages, with unit names, decimal separators and numerals that follow your region. • Your saved units carry over from the previous version. ### 3.4 — 2015-07-09 This update from Apple will improve the functionality of this app. No new features are included. - performance enhancements. ### 3.3 — 2015-04-10 + Added support for Apple Watch. ### 3.2 — 2013-11-13 Updated for iOS 7. ### 3.1 — 2012-12-07 + Added missing "+/-" button. ## More apps by Duncan Campbell - [Stiction](https://appshunter.io/ios/app/stiction/id6799792974) All apps by Duncan Campbell: https://appshunter.io/developer/286552076 ## Related topics [numeral conversion](https://appshunter.io/ios/topics/numeral-conversion) --- *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 2026-09-08.*