*** FREE for Limited Time Only

The 1st Apple Watch + iPhone Chromatic Tuner that detects and displays your tuning accurately and precisely .

It's FREE. Quick and Easy to use. Clear and Simple to read.

Custom tuning notes specifically for string instruments like Guitar, Ukulele, Violin, Viola, Cello.

Features (Apple Watch + iPhone):
- detects your tuning notes
- generates tones
- precise frequencies detection in hertz

Download now and to make your Watch and iPhone a chromatic tuner!

What’s New

Version 1.0

This update is signed with Apple’s latest signing certificate. No new features are included.

Ratings and Reviews

3.9 out of 5
113 Ratings

113 Ratings

MaxHollister ,

Best I’ve found.

I’m looking for a way to read the pitch of stringed instruments for the purpose of tuning and repair. This app is the closest I’ve found, but unfortunately doesn’t pinpoint the value. It gets to within 15% and the reading makes quantum leaps as you tune up and down which are not tight enough for my purposes. For regular tuning (for players) it’s fine.

Coconut Ron ,

Coconut Ron's Review of the Pro Tuner

If your a musician playing guitar, ukulele, violin, etc. this Pro Tuner is for you. It easily lets you accurately tune your instrument with precise pitch at a touch of a button. I also love it to get the frequency in Hertz (Hz) for notes like (A)
is equal to 440 Hz. All you have to do is hold it near your iPhone's microphone and it picks up the exact note and frequency in the display. I give Pro Tuner my 5 Coconuts!
Coconut Ron (Ron Ajemian - New York)

Mcbean2000 ,

Great App - Calibration Issue

The app and interface are great. Love the inclusion of guitar, ukulele, violin, viola, and cello. Interface and tone generator is intuitive and clean.

Issue: the chromatic tuner shows the correct frequency in Hz but the "needle" is always showing that the tuning is too low. To get the tuning in the green, the note is way too sharp. Some sort of calibration is off.

If this is corrected it is a hands down five star app.


Harmony Network Group Limited
24.6 MB

Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© All Rights Reserved 2015
In-App Purchases
  1. Premium Upgrade $3.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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