Open source + Units-in-Java/GNU Units -> great! Finally, somebody thought of not reinventing wheel and reusing existing code instead for this task! Should be in the top downloads IMO, but maybe people on Android don't like GPL or too many features :) One feature I miss is possibility to overlay the units database - e.g. to update currency conversions. Also integration e.g. with calculator++ would be nice.
Good overall I've been using this app for all conversion needs, but today I found it does not have meters per second. What..?
Excellent This app knows every concevable unit! Not quite as versatile as the linux cms line tool, but still very useful.
Limitless Contains every conceivable unit! Free, open source and requires no special permissions to run
This is the one, folks For a long time, I've wanted to have the power of Google's search calculator on my phone. Come to find out, it's backed by GNU units, which is also the basis of this app. Adding in the interface that improves on the built-in calculator, and you've got the best back-of-the-envelope calculator available on the play store. Quick question for the developer: does it do a periodic units_cur update to make sure the currency exchange rates are up to date?
Idiotic It has a terrible interface. It's not set up well at all. You can't select a from unit and a to unit, press convert and get an answer. Nothing is clearly labelled. It's far from intuitive or user friendly. Keep looking.
•Adds advanced keypad. Just swipe the keyboard to the left!
•Improves keypad UI; now defaults to search units.
•Fixes rounding error.
•Adds Russian translation (thanks Andrejs Gorbunovs!)
•Numerous other bug fixes.