The following apps are suggested for your musical growth and exploration:
Frozen Ape (metronome for iOS and Android))
Clear tune (tuner for iOS and Android)
The Amazing Slow Downer (slows down music so you can figure it out by ear more easily)
Voice Memos (record yourself playing and listen back – built into iOS or here for Android)
Rhythm Sight Reading Trainer (quiz yourself on basic theory)
Websites
Musictheory.net (basic music theory)
Musictechteacher.net (games/quizzes)
Good-ear.com (ear training)
Finalemusic.com (free music notation software)
Vicfirth.com (snare drum rudiments and more)
Help me add more! Show Mrs. Moorhead another app that makes this list and earn yourself a prize!