Mini apps
We build these apps for our students — so that every minute of practice between lessons counts. Each tool trains exactly one skill: rhythm, motor skills, ear or theory.
BETAAll mini apps are in beta: they work, but we are still testing and improving them. If something is off, let us know.
Progress faster
Short, focused exercises with a metronome instead of hours of playing through.
Learn more solidly
Instant feedback: you hear and see every beat.
Built on research
Our method follows learning research: short, spaced practice sessions, deliberate practice and instant feedback.
Tuner & singing trainer
Sheet music player
Fretboard Studio
Phrase → Notes
Drum Studio
Metronom
Rhythm Blocks
Akkorde
Gehörtraining
The project →
How the Fretster App is made: roadmap, vision — and how you can help build it.
Enjoying this tool?
All mini tools are free and ad-free. If they help you, you can support the work on them – any amount helps.
Fretster is a sole proprietorship – no donation receipts can be issued. More about the project →