Centerline
- 1Runs onAndroid, iOS, Mac
- 2CostsFree plan
- 3Strobe displayYes
- 4Alternate tuningsYes
- 5Custom reference pitchYes
- 6Intonation monitoringYes
- 7Offline modeYes
- 8Available platformsboth
Overview
Centerline is a chromatic tuner for identifying played notes and seeing whether their pitch is flat or sharp. Its chromatic range is 62–800 Hz and follows the nearest note, including sharps and flats. Players can choose Simple, Trail, Strobe, or Workbench displays; Trail shows six seconds of pitch history. Guitar mode detects a string automatically or lets users select one, and includes standard tuning, All Strings progress, and a headstock view. Tuning works offline, and pitch analysis takes place on the device: microphone audio is not recorded, saved, transmitted, or shared. The free Chromatic plan includes the core tuning functions and guitar views. Centerline Complete costs 3.99 USD per once and adds alternate and custom six-string tunings, capo settings, A4 calibration from 432–446 Hz, and reference tones. The app is available for Android, iPhone, and Mac. It has no ads or account system; optional usage analytics are disabled until enabled and then exclude audio and pitch data.
Who it is for
Centerline suits musicians who want an offline tuner with chromatic and guitar modes, including players who prefer a visual pitch history or strobe display. The paid unlock is for players who need alternate tunings, capo settings, calibration, or reference tones.
What is good
- Chromatic mode covers 62–800 Hz.
- Four chromatic display views are available.
- Tuning works offline without audio recording or sharing.
- Free plan includes guitar mode and six guitar views.
- Complete costs 3.99 USD per once.
What to know first
- Chromatic mode misses the full piano range.
- Chromatic mode misses a bass guitar’s lowest notes.
- All Strings does not measure a chord at once.
- No trial is offered.
Verdict
Centerline covers core chromatic and guitar tuning without requiring an account or internet connection. Its range has stated low- and high-end limits, and All Strings tracks individual readings rather than measuring chords.
Centerline plans and pricing
All plansCompared on musical tuner apps
- Free plan
- Yescenterlinetuner.com
- Strobe display
- Yescenterlinetuner.com
- Alternate tunings
- Yescenterlinetuner.com
- Custom reference pitch
- Yescenterlinetuner.com
- Intonation monitoring
- Yescenterlinetuner.com
- Offline mode
- Yescenterlinetuner.com
- Available platforms
- bothcenterlinetuner.com
Facts
- Purpose
- Centerline is a chromatic tuner that shows the note played, whether it is flat or sharp, and where the pitch settles.centerlinetuner.com · 29 Sept 2026
- Frequency range
- Chromatic mode supports 62–800 Hz and follows the nearest note, including sharps and flats.play.google.com · 29 Sept 2026
- Display views
- Chromatic mode has Simple, Trail, Strobe, and Workbench views; Trail shows six seconds of pitch history.play.google.com · 29 Sept 2026
- Guitar mode
- Guitar mode provides automatic string detection, direct string selection, standard tuning, All Strings progress, and a headstock view.play.google.com · 29 Sept 2026
- Pitch analysis
- Pitch analysis happens on the device, and the app does not record, save, transmit, or share microphone audio.centerlinetuner.com · 29 Sept 2026
- Offline and accounts
- Tuning works offline, and the app has no ads or Centerline account system.centerlinetuner.com · 29 Sept 2026
- Optional analytics
- Usage analytics is off until enabled and, when enabled, excludes audio and pitch data.centerlinetuner.com · 29 Sept 2026
- Purchase handling
- The optional unlock is a one-time store purchase; the app does not receive payment-card details or require an account.centerlinetuner.com · 29 Sept 2026
- Notable limit
- All Strings remembers individual readings but does not measure a chord at once; chromatic mode does not cover the full piano range or a bass guitar’s lowest notes.play.google.com · 29 Sept 2026
- Support
- Questions or feedback can be sent to [email protected].play.google.com · 29 Sept 2026
- Platform availability
- The App Store listing specifies iPhone and Mac availability, and the maker’s site links to Android and iPhone downloads.apps.apple.com · 29 Sept 2026
- No trial
- The maker states there is no trial and no recurring charge.centerlinetuner.com · 29 Sept 2026
Company
- Headquarters
- Sacramento, California, United Statescenterlinetuner.com · 23 Sept 2026
Best Centerline alternatives
See all 20
Where it ranks on Specifiction
- Best Musical Tuner Apps in 2026#6 of 32
Is Centerline yours?
Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.
Sources
- centerlinetuner.com· checked 29 Sept 2026
- play.google.com/store/apps/details· checked 29 Sept 2026
- centerlinetuner.com/privacy· checked 29 Sept 2026
- apps.apple.com/us/app/centerline-chromatic-tuner/id680· checked 29 Sept 2026