Centerline: Chromatic Tuner
Guitar, ukulele, violin, viola
About
This app offers free chromatic tuning for various instruments, identifying notes, sharps, and flats. It includes a dedicated guitar mode with automatic string detection and optional advanced tuning tools for purchase.
What's New in Centerline
1.8.3
October 18, 2026
New in 1.8.3: • Open Centerline straight to Chromatic or Guitar from Spotlight, Siri or the Shortcuts app. • Add a Tune button to Control Center, the Lock Screen or the Action button (iOS 18 and later).
MoreSubscriptions & In-App Purchases
$3.99
Centerline Complete
Alt/custom tunings, capo, A4 and reference tones.
Developer apps
FAQ
Does Centerline have ads?
No, Centerline is ad-free. The app is designed with privacy in mind and does not contain advertisements.
What instruments can Centerline tune?
Centerline can tune guitar, ukulele, violin, viola, mandolin, and banjo in standard tuning. It also supports most voices and band instruments at their concert tuning note.
What are the optional tuning tools in Centerline Complete?
Centerline Complete offers Drop D, Half step down, D standard, DADGAD, Open G tunings, capo settings, A4 calibration from 432 to 446 Hz, and reference tones for a one-time purchase.
Can Centerline tune chords?
No, Centerline tunes one note or string at a time. It remembers individual readings but does not measure chords simultaneously.
Is Centerline available on Android devices?
Based on the provided data, Centerline is supported on Mac and iPhone. Information regarding Android availability is not present.
How often is Centerline updated?
The latest version of Centerline is 1.8.1, last updated on October 11, 2026. This indicates a relatively frequent update cycle.
What is the price of Centerline Complete?
Centerline Complete is a one-time purchase, and the store will show your local price. There is no subscription required for these extra tuning tools.
Does Centerline work offline?
Yes, Centerline works offline. Pitch analysis happens on your device, and it does not require an internet connection for tuning.
