The Piano Chords and Scales app lets you explore and learn the piano in a simple and interactive way. You can be a much better musician while having fun along the way.
You can see and understand how chords relate to scale and form chord progressions. This can be used in conjunction with a real piano and when you study for music theory or piano exams. You can benefit if you play with your ears, but what gets better when reading.

This tool and this application are based on the basics and are very helpful for beginners.
Piano Companion is a flexible piano chords and scales dictionary with user libraries and reverse mode with a flexible chord progression builder. If you can’t remember the name of a chord or scale, this app helps you to find it by keys. For example, just press C, G and you will get C Major as the first chord in the search result. If you don’t see a chord, you can create a custom chord and use it for chord charts or your user library. The Piano Chord app shows chord and scale notes, degrees, fingering for both hands in major and minor scales – and you can contribute your own custom fingering too. Additionally, you can listen how a scale or chord sounds in the loop or arpeggiated. You can see the list of compatible chords in the selected scale or list of compatible scales for a selected chord.