SUS4 Pitch Pipe
A pitch when you need one.
Free · In‑App Purchases
A clean chromatic reference tone, drone mode included. No account needed.
The right pitch, exactly when you need it.
Before a rehearsal, before a soundcheck, before the first note of a warmup — a reference tone grounds the room. SUS4 Pitch Pipe is a clean, chromatic pitch reference that covers every note, with a drone mode that holds a tone as long as you need it.
Singers use it for vocal warmups. A cappella groups use it before the downbeat. String quartets use it for the A before they check the tuning of everything else. It is a simple, reliable tool that never runs out of reeds.
• Full chromatic range — every note, every octave
• Drone mode for sustained reference tones during warmups
• Ideal for vocal warmups and a cappella groups
• Clean waveform with gentle attack — not harsh on the ear
No account. No mic access needed. Runs on-device, always.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
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Lifetime purchase option and reliability improvements.
The developer, ThePaulSmith, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Paul Smith
- Size
- 20.8 MB
- Category
- Music
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- SUS4 Pitch Pipe Lifetime $59.99
- SUS4 All-Access $4.99
- SUS4 Pitch Pipe Pro Monthly $0.99
- Copyright
- © 2026 4chords Studios