What are some alternatives?
When comparing multiConvert and Unit Converter Ultimate, you can also consider the following products
ConvertAll - A comprehensive unit conversion program.
XE.com - XE.com Inc. (XE) is a Canadian online foreign exchange services company.
Tweetbot - Sync your timeline across your iPhone, iPad, and Mac. Mute tweets by user, hashtag, tweet source, or keywords (including regex). 3rd Party support for image, video, read later, and timeline sync services.
unitMeasure - A sleek unit calculator for android
Elk - The fastest way to convert currencies on mobile.
Converber - Xyntec Automation provides project management and systems integration.