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.
Reviews of Unit Converter are mostly negative: the Reference app is rated 4.6/5 from 16K App Store ratings. What users like most: easy to use, simple design. Top complaints: limited functionality without paying, most common units locked behind paywall. Summarized from real user reviews.
2.1.3
October 9, 2026
Added support for iPhone Duo.
$2.99
Pro Features
Unlock all categories
3 issues
Conversion results not always accurate
App freezes or crashes on some devices
4 requests
Add calculator functionality
Improve currency conversion
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.
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.
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.
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.
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.
