#IPCalc
IPCalc is a app for Android and Firefox OS for calculate IP ranges for a subnet. Make with Apache Cordova
You can download the apk directly here and use in any browser in (http://son-link.github.io/IPCalc/) IP Calc is avaliable in the Firefox Marketplace for Firefox OS and Firefox navigator.
If you are interested to translate to another languages, simply download ipcalc.en.properties, translate it and create new issue with the content of the file with te countre code (fr for france, ja for japanese, etc), or create a fork of the proyect and send pull request.
Copyleft 2014 Alfonso Saavedra "Son Link"
Under GPLv3 license