PitchRef: Chromatic Tuner
Concert Pitch & Note Frequency
$2.99 · Designed for iPad. Not verified for macOS.
Five reference standards, nine octaves, every note in hertz to two decimal places. Tap 440, 432, 442, 415 or 466 and the whole table moves with you. Works with no signal.
PitchRef is a concert pitch reference. It shows the exact frequency of every note in equal temperament, at whichever A4 standard you work in, so the number you need is always in front of you.
Pick a reference pitch, pick an octave, and the table fills in: all twelve notes, each one in hertz to two decimal places. Change the reference and the whole grid moves with it.
PitchRef is a reference table, not a listening tuner. It does not use the microphone. It gives you the number your instrument should be tuned to.
WHAT YOU CAN DO
- Switch between five reference standards: A4 = 440 Hz (modern), 432 Hz, 442 Hz (orchestra), 415 Hz (baroque) and 466 Hz (high baroque)
- Read all twelve notes of any octave from 0 to 8, C0 up to B8, 108 notes in all
- See every frequency to two decimal places, from 16.35 Hz at C0 to 7902.13 Hz at B8 on the 440 standard
- Compare a historical tuning against a modern one by tapping between two references
- Calibrate an analog tuner to a target number instead of trusting its own scale
- Enter exact frequencies into your DAW when you are working to a set pitch
- Check the maths yourself: the About screen states the formula and the MIDI numbering behind every row
- Read it with no connection, in the light or dark appearance your device is already set to
- Use it on iPhone and iPad
WHO IT IS FOR
Orchestral and ensemble players who tune to 442. Early music players working at 415 or 466. Piano technicians, luthiers and repair techs who need a target number rather than a needle. Producers working to an exact frequency in a DAW. Teachers and students who want to see how equal temperament is actually built.
PRIVACY
PitchRef collects nothing. There is no account, no sign-in, no tracking and no advertising. The app makes no network requests, so everything stays on your device and the table works with no signal.
Every number comes from one formula, applied the same way every time: f = A4 * 2^((n-69)/12), where n is the MIDI note number. Set your reference once and read the pitch you need.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
A new app icon and a clearer store listing.
The developer, 26 Branding Agency Inc., 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
- 26 Branding Agency Inc.
- Size
- 33.1 MB
- Category
- Music
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 26 Branding Agency Inc.
