Our mobile devices, particularly our smartphones, have practically become extensions of our persons. And yet we do not treat them with the same guarded vigilance as we do our homes. Whereas we, most often than not, scrutinize almost everything that comes or is added into our abodes, we willy-nilly install apps sometimes with wanton disregard for what they might contain. Granted, the ease of installing and sheer number of apps make it statistically impossible to scrutinize each and every one. Not to mention technically difficult if the app's source code is unavailable.
Fortunately, there is a class of apps available under an open source license that makes it not only easier to inspect what gets installed on your phone but even take the app in new directions should the need arise. Here are some of the best open source apps for Android as well as iOS.