Cappella

Guitar Tuner

Pitch-accurate chromatic and smart tuner. Works offline, instant response, built for live and studio use.

BPM Detector

Tap or record — Cappella extracts tempo from any audio source with high accuracy.

Key Detection

Identify the musical key of any track or live performance in seconds.

Chord Detection

Real-time chord recognition from microphone or file input. No internet required.

Song Analysis

Deep intelligence — BPM, key, chords, energy curve, section map, and track compatibility — in a single cloud run.

Fast

On-device DSP means zero latency for core features. No waiting for a server.

Accurate

Built on precision signal processing. Cappella is designed to be correct, not approximate.

Privacy-focused

Audio is processed locally for all real-time features. Your recordings never leave your device unless you choose cloud analysis.

Built for professionals

Designed for musicians, producers, and analysts who need a tool that works — not a toy.

Audio is processed only for the analysis you request. It is never stored or shared without your explicit action.

All user data is encrypted in transit using industry-standard TLS.

You retain full control over your data. You can delete your account and all associated data at any time from within the app.

How to delete your account

1. 1Open the Cappella app on your device.
2. 2Navigate to Profile (bottom navigation bar, rightmost tab).
3. 3Scroll down and tap Delete Account.
4. 4Confirm deletion in the dialog that appears.

Data deleted

• —Your account credentials and profile
• —All saved analyses and results
• —App preferences and usage data

Data that may be retained

• —Subscription and transaction records where legally required
• —Security, fraud-prevention, or compliance records where required by law

Retained only for the minimum period required by applicable law.