As many of you might not be aware that Mozilla is soon going to launch Web Apps Store soon in 2012. This app is a contribution and encouragement in getting people to start developing apps for the Open Web. This app lists the values used in the AppManifest. Json file for the applications to be developed for Mozilla App Store.
The security report reveals that the app is completely safe. The4D is the official developer of Firefox Apps Dev Cheatsheet which can be found in the Productivity category. The tool was rated 4.4 on Google Play.
Over 10K users downloaded and installed this application and its latest release was on Jul 8, 2014. Get the latest .apk file of Firefox Apps Dev Cheatsheet 2.1.5 for free and take a look at users' reviews on Droid Informer. You will need 611 KB of free disk space to set up the app which is compatible with Android 2.1 and higher.