Harmony is a valuable aid for musicians playing mostly jazz. All scales are represented and this, in all keys. Major scales, minor, blues, increased, diminished, pentatonic, etc. All chords are also represented in all keys. Major, minor, 7th, 9th etc. They are represented in the form of american chords (ex: CM7). Modal table also.
According to the antivirus report, Harmony doesn't contain viruses or any kind of malware. The tool is developed by Ciginfo and its category is Music & Audio. This application has been rated 3.8 on Google Play.
The app has been downloaded and set up by over 10K users and the latest update was released on Aug 17, 2016. Take the opportunity to get the .apk installation package of Harmony 4.01 free of charge and check out users' reviews on Droid Informer. The installation package requires 1 MB of disk space and it can be launched on Android devices 2.0 and above.