What's New

· Optimization for the iPhone 14 Pro Max, iPad Mini and latest iPads.
· A4 Calibration, Tuning fork and Settings (as In-App Purchases).
· Performance improvements

App Description

Tune your cello instantly with precision and ease!

· The most accurate - displays the exact sound frequency in Hz.
· Calibration for A: 392Hz, 415Hz, 432Hz, 440Hz, 441Hz, 442Hz, 443Hz, 444Hz, 466Hz.
· Instant load and fastest tuning! - Optimized for latest devices.
· Highest responsiveness and sensitivity.
· Intuitive user interface with LED tuning indicator.
· Visual indicators - tuned string lights up.
· Universal app - works with iPhone, iPad and iPod touch.
· Advanced settings (A4 calibration, Mic sensitivity, Sound notifications) and Tuning fork! (as in-app purchases)

What our users say:

"Does what it promises - Very useful app."

"This app makes tuning so easy!"

"By far the greatest and most accurate cello tuning app. Play the string, read its chart and you know whether you're in tune."

"Amazing! Outstanding, well spent money!

"All cellists should have this app!"

"It's very useful for me! Thank you!"

"Excellent app"

"Very convenient software. Suitable for any skill!"

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Please make sure to allow microphone access to this app when prompted.
Check it under Settings>Privacy>Microphone. Thank you.

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Got ideas? Questions?

Please send us your feedback through our site or to [email protected]

iPhone Screenshots

(click to enlarge)

Cello Tuner Professional screenshot 1 Cello Tuner Professional screenshot 2

iPad Screenshots

(click to enlarge)

Cello Tuner Professional screenshot 3 Cello Tuner Professional screenshot 4

App Changes

  • June 10, 2014 Initial release
  • August 01, 2014 New version 1.5
  • October 16, 2014 New version 2.0
  • November 18, 2014 Price decrease: $2.99 -> $1.99
  • November 19, 2014 Price increase: $1.99 -> $2.99
  • May 01, 2015 Price decrease: $2.99 -> $1.99
  • May 02, 2015 Price increase: $1.99 -> $2.99
  • June 23, 2016 New version 2.6
  • July 05, 2016 Price increase: $2.99 -> $3.99
  • December 18, 2016 Price decrease: $3.99 -> $2.99
  • December 23, 2016 Price increase: $2.99 -> $3.99
  • June 13, 2019 New version 3.5
  • August 16, 2019 Price increase: $3.99 -> $6.99
  • October 02, 2019 Price decrease: $6.99 -> FREE!
  • October 05, 2019 Price increase: FREE! -> $3.99
  • October 27, 2020 New version 3.6
  • November 11, 2020 New version 3.7
  • August 05, 2021 New version 3.8
  • September 16, 2023 New version 3.9.1
  • September 16, 2023 Price increase: $3.99 -> $9.99