Best Pico alternatives: apps like Pico: Train Perfect Pitch!

Skitter: Guitar Trainer

Guitar & Bass Practice Trainer

Free

This app provides structured practice for guitar, bass, and ukulele. It offers guided drills, scales, arpeggios, and theory exercises with visual fretboard guidance and a metronome. Features include rhythm grading, progress tracking, and a built-in tuner.

Perfect Pitch Quiz-EarTraining

Absolute Pitch Piano Tone Quiz

Free

This music game helps you improve your pitch recognition by listening to notes and selecting the correct answer. It offers various difficulty levels, from simple YES/NO questions to identifying two consecutive notes. No prior musical knowledge is needed to play and train your ear.