Centz
Guitar, Bass & Ukulele Tuner
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
Tune by sight, not by ear. One clean LED meter tells you flat, in-tune or sharp — across guitar, bass, ukulele and banjo, with alternate tunings a tap away.
Centz is a tuner that gets out of your way.
Point it at your instrument, play a string, and a single focused LED-style meter tells you exactly what you need to know: flat, in tune, or sharp. No clutter, no menus to dig through — just fast, accurate tuning whether it's your first week or your next gig.
THREE WAYS TO TUNE
• Auto — Just play. Centz snaps to the nearest open string and shows how far off you are. Perfect for quick top-ups between songs.
• Guided — Centz walks you through every string, lowest first, marking each one off as it lands in tune. The methodical way to tune the whole instrument.
• Manual — Tap the string you want, and Centz measures against that one only. Ideal when a string is badly out and you want full control.
BUILT FOR PLAYERS WHO TUNE A LOT OF THINGS
Guitar, bass, ukulele and banjo are all first-class — switch instruments in a tap. Each one carries its own tunings, so alternate setups aren't buried in settings.
STANDARD TUNING, FREE. ALWAYS.
Every instrument has a free tuning, forever — standard on guitar, bass and ukulele, open G on banjo. Unlock the rest — Drop D, Open G, DADGAD and more — with Centz Pro, a one-time purchase with no subscription.
TUNE TO YOUR REFERENCE
Concert pitch is fully adjustable. Tuning to A=432 instead of A=440? Playing alongside a piano that's drifted? Set the reference and every string follows.
ACCURATE TO THE CENT
Centz measures pitch error in cents and treats you as in tune within a tight tolerance — close enough that the meter agrees with a trained ear, every time.
DESIGNED TO BE GLANCED AT
A clean, distraction-free interface that reads instantly under stage lights or on the couch. Everything is analysed live through the microphone and never recorded, so nothing leaves your phone.
Download Centz and spend less time tuning, more time playing.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Fixed a crash: Centz could close if the audio route changed while you were tuning — plugging in headphones, or taking a call. It now carries on, or tells you what went wrong.
The developer, Greg Raine, 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 Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Greg Raine
- Size
- 5.4 MB
- Category
- Music
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
English and 4 more
- English, French, German, Japanese, Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Centz Pro £5.99
- Copyright
- © Greg Raine