BeatStars - BeatStars is a social music marketplace & distribution co.
ChordIQ - Learn notes, chords, sight reading, perfect pitch and more.
Tune Me - Tune Me is an amazing mobile app that helps you to record music with more than five hundred beats and rhythms.
muted.io - A magical collection of interactive music theory tools & visual reference pages for musicians and music producers
Vivace - Vivace is an amazing mobile app that helps you to maximize your music reading skills by providing some practice tools.
7Pad Scales and chords - Music instrument and assistant for playing scales and chords.