# Unit Converter - Pro Units App — Convert Any Unit > Versatile unit converter with 16 categories and live currency exchange rates. (iPhone/iPad app by Tue Nguyen Minh.) - Source: https://appshunter.io/ios/app/unit-converter-pro-units-app/id1139120257 (this page in markdown: same URL + `.md`) - Developer: [Tue Nguyen Minh](https://appshunter.io/developer/434811167) - Category: Reference, Travel - Price: Free with in-app purchases - Rating: 4.60/5 from 16,123 App Store ratings · 298 written reviews indexed - Age rating: 4+ - Requires: iOS 10.3 · 21 MB - Languages: American English - Released: 2016-09-02 - Data updated: 2026-08-27 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/unit-converter-pro-units-app/id1139120257/reviews.md ## What is Unit Converter? Explore our elegant and powerful unit converter with 16 categories, covering almost every unit you can think of. It's user-friendly and allows you to create custom unit lists for each category. Now featuring LIVE exchange rate updates for 148 world currencies! Categories include: Angle Area Cooking Currency Data Length Mileage Power Pressure Speed Temperature Time Volume Weight Men's shoe size Women's shoe size Note that only four categories are unlocked by default. To access all 16, simply purchase the "Pro Features" In-App. Stay connected for up-to-date currency exchange rates; an internet connection is required. Elevate your conversion experience with our versatile unit converter. ## Key features - 16 conversion categories - Custom unit lists - Live currency exchange rates - 148 world currencies supported - User-friendly interface ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Pro Features | $2.99 | one-time | ## What do users think of Unit Converter? Overall sentiment: negative **Pros** - 👍 Easy to use - 🚀 Simple design - 👍 Covers many units - 👍 User-friendly layout - 👍 Accurate conversions - 👍 Handy reference **Cons** - 🔒 Limited functionality without paying - 🔒 Most common units locked behind paywall - 🐛 Restore purchase not working - 🐛 Unreliable app support - 🔒 Conversion categories locked - 🔒 Paid upgrade required for full access **Commonly reported bugs** - Conversion results not always accurate - App freezes or crashes on some devices - Purchased features not always accessible **Most requested features** - Add calculator functionality - Improve currency conversion - Provide more unit categories - Allow creating custom formulas ## Recent user reviews (10 of 298) All indexed reviews: https://appshunter.io/ios/app/unit-converter-pro-units-app/id1139120257/reviews.md ### 1/5 — Does NOT work on iOS 10.3 as advertised *2026-05-22, version 2.1.2* App "tries" to open, then returns you to your home screen. ### 5/5 — Great app. *2026-03-06, version 2.1.1* Easy to use and very good tool. ### 5/5 — Unit converter pro *2026-03-02, version 2.1.1* Muy excelente ### 5/5 — UC-Pro *2026-02-17, version 2.1.1* Great app, does the job. ### 5/5 — Always Accurate *2026-01-29, version 2.1.1* Been using this for years and it’s my go to converter for calculating all sorts of different factors! I like it! ### 2/5 — I wish it would be functional again *2026-01-23, version 2.1.1* This was an awsome app, suddenly it stopped working properly, i put the value in any category but it doesn’t show me the results. I have an iphone max 13pro. ### 1/5 — Not good *2026-01-14, version 2.1.1* Paid to unlock all customization Everything is the same as before. No customization features ### 5/5 — Handy app *2026-01-05, version 2.1.1* Have had this app for years. So easy to use. ### 5/5 — Simple interface for everyday use *2025-12-31, version 2.1.1* I don’t need a complicated one. This one fits the purpose ### 3/5 — It works *2025-12-19, version 2.1.1* It works ## Frequently asked questions about Unit Converter ### What does the Unit Converter - Pro Units App do? This app functions as a comprehensive unit converter, offering 16 different categories for conversions. It supports a wide range of units for measurements like length, area, temperature, and more. Additionally, it provides live updates for currency exchange rates across 148 world currencies. ### How do I access all 16 conversion categories? By default, only four categories are unlocked. To gain access to all 16 categories, you will need to purchase the 'Pro Features' through an in-app purchase. This unlocks the full potential of the converter. ### Is the app free to use? The app is free to download and use with a limited number of categories. To unlock all features, including all 16 conversion categories and advanced functionalities, a one-time in-app purchase is required. ### What are the common use cases for this app? This app is useful for a variety of situations, such as converting cooking measurements, calculating distances, managing data storage, converting currencies while traveling, or understanding different shoe sizes. Its versatility makes it a handy tool for everyday needs. ### Does the app require an internet connection? An internet connection is required to receive up-to-date currency exchange rates. For other conversion functions that do not involve live data, an internet connection may not be necessary. ## Version history (last 5 releases) ### 2.1.2 — 2026-03-12 Minor bug fixes ### 2.1.1 — 2025-10-21 Minor bug fixes ### 2.0.9 — 2025-03-22 Minor bug fixes ### 2.0.8 — 2024-10-01 Minor bug fixes ### 2.0.7 — 2024-08-18 Minor bug fixes ## Apps similar to Unit Converter | App | Rating | Price | Category | | --- | --- | --- | --- | | [Metric Conversion tool](https://appshunter.io/ios/app/metric-conversion-tool/id1439430070) | 4.8 (14,630) | Free | Reference | | [World Map +](https://appshunter.io/ios/app/world-map-plus/id351607451) | 4.7 (8,025) | Free | Reference | | [Concealed Carry Gun Tools](https://appshunter.io/ios/app/concealed-carry-gun-tools/id1065849605) | 4.6 (845) | Free | Reference | | [Electrician Handbook — Basics](https://appshunter.io/ios/app/electrician-handbook-basics/id1612996115) | 4.8 (986) | Free | Reference | | [Flange Bolt Size & Torque](https://appshunter.io/ios/app/flange-bolt-size-and-torque/id1489122965) | 4.6 (363) | Free | Reference | | [Constitution of United States.](https://appshunter.io/ios/app/constitution-of-united-states/id1317066017) | 4.8 (6,010) | Free | Reference | ## More apps by Tue Nguyen Minh - [Flower Board™](https://appshunter.io/ios/app/flower-board/id434811164) - [Flower Board HD - A relaxing puzzle game](https://appshunter.io/ios/app/flower-board-hd-a-relaxing-puzzle-game/id450677428) - [Toolbox™](https://appshunter.io/ios/app/toolbox/id615380696) - [Bubble Level Plus+](https://appshunter.io/ios/app/bubble-level-plus-plus/id618064263) - [Big Stopwatch™](https://appshunter.io/ios/app/big-stopwatch/id622509131) - [Ruler®](https://appshunter.io/ios/app/ruler/id623207505) All apps by Tue Nguyen Minh: https://appshunter.io/developer/434811167 ## Related topics [best unit converter pro](https://appshunter.io/ios/topics/best-unit-converter-pro) · [unit converter energy](https://appshunter.io/ios/topics/unit-converter-energy) · [unit converter inches](https://appshunter.io/ios/topics/unit-converter-inches) · [unit converter pro](https://appshunter.io/ios/topics/unit-converter-pro) · [conversion chart](https://appshunter.io/ios/topics/conversion-chart) · [area converter](https://appshunter.io/ios/topics/area-converter) · [pressure converter](https://appshunter.io/ios/topics/pressure-converter) · [unit converter power](https://appshunter.io/ios/topics/unit-converter-power) · [best unit converter](https://appshunter.io/ios/topics/best-unit-converter) · [converters](https://appshunter.io/ios/topics/converters) · [unit converter](https://appshunter.io/ios/topics/unit-converter) · [iunits converter](https://appshunter.io/ios/topics/iunits-converter) · [size converter](https://appshunter.io/ios/topics/size-converter) · [simple unit converter](https://appshunter.io/ios/topics/simple-unit-converter) · [pressure converter equation](https://appshunter.io/ios/topics/pressure-converter-equation) · [inches converter](https://appshunter.io/ios/topics/inches-converter) · [convert units](https://appshunter.io/ios/topics/convert-units) · [converter the unit converter](https://appshunter.io/ios/topics/converter-the-unit-converter) · [the best unit converter](https://appshunter.io/ios/topics/the-best-unit-converter) · [units convertion](https://appshunter.io/ios/topics/units-convertion) --- *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 2026-08-27.*