Prometheus Apps

VocalArc

Coming soon iOS

VocalArc is a singing trainer that coaches your voice entirely on your device. Take a quick voice test, get real-time pitch feedback as you sing, and turn short gamified exercises into a path toward the song you actually want to sing. Practice is free and unlimited, no account is required, and your voice is never uploaded.

Coming to the App Store

Why people use it

Real-time, on-device pitch feedback β€” nothing is uploaded

A quick voice test sets your starting level

Earn stars, XP, streaks and levels, Duolingo-style

Train toward the song you actually want to sing

Works offline, no account needed β€” no tracking, no ads

Free unlimited practice; one optional purchase, never a subscription

Common questions

Get support
Is my voice recorded or uploaded?No. All pitch analysis happens on your device in real time. Your microphone audio is never stored and never uploaded to our servers.
Do I need an account?No. VocalArc is fully usable as a guest, offline. You can also sign in with Apple or Google if you want your progress synced across devices β€” that is the only thing an account does.
Is there a subscription?No. Practice is free and unlimited. There is one optional purchase that unlocks the advanced exercise library, and it is a single payment β€” nothing renews and there is nothing to cancel. If you reinstall or change phones, tap Restore Purchases on the unlock screen.
Will other people see my name on the leaderboard?No. The leaderboard shows everyone under an automatically generated nickname such as "Singer 4821". Your display name stays private to your own profile and is never shown to anyone else.
How do I delete my account and data?Open Settings β†’ Profile and account β†’ Delete account to remove your account and everything synced to it, or contact us at [email protected]. Guest data lives only on your device and is removed when you delete the app.

Need help with VocalArc?

We’ll help with alerts, subscriptions, account issues and bugs.

Contact VocalArc support