I want to convert money values from a currency to another, for instance EUR to USD.


  • Run on Android
  • Open source (imperative)
  • Usable offline (exchange rates get updated from time to time, not too strict on that)

Bonus for a easy input of numbers without having to firing up the default software keyboard (which contains all letters whereas I only need numeral and decimal point).

  • 1
    Note you can enter 50 EUR to USD in browser and you'll get the answer from Google, works in Android too. Of course it's neither open source nor usable offline.
    – SF.
    May 15 '14 at 9:17
  • I'm curious, could you explain why being open source is important? I would think that a quick comparison against another app/website would quickly show that it worked and I can't think of any security/privacy concerns unless it is asking for too many permissions. May 18 '14 at 13:58
  • 1
    @MatthewRead: I don't trust code I did not compile myself. A currency converter will need to update its data from time to time, which means Internet permission, which means the app can report on me (and probably will, as most non-open source apps include statistics gathering clients like libGoogleAnalyticsServices.jar)
    – Nicolas Raoul
    May 19 '14 at 3:20

Android Currency Converter seems to be what I was looking for:

Android Currency Converter

A few drawbacks:

  • Not that many currencies
  • Maybe a better UI could be designed, even though I have no specific improvement ideas

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