Opening the iTunes Store.If iTunes doesn't open, click the iTunes application icon in your Dock or on your Windows desktop.Progress Indicator
Opening the iBooks Store.If iBooks doesn't open, click the iBooks app in your Dock.Progress Indicator

iTunes is the world's easiest way to organize and add to your digital media collection.

We are unable to find iTunes on your computer. To buy and download TACTSON TUNER MASTER by DMI LABS LLC, get iTunes now.

Already have iTunes? Click I Have iTunes to open it now.

I Have iTunes Free Download
iTunes for Mac + PC



Open iTunes to buy and download apps.



Tune Master is a digital tuner APP offered by DMI Labs LLC, a company which dedicates to create and manufacture innovative musical products for the musicians.

Tune Master turns your iPhone/iPod/iPad into a portable instrument tuner with most of the common instruments tuning modes, such as guitar, bass, violin, ukulele, Mandolin, Banjo, Dobro, Bouzouki, Dulcimer, Bagpipe and 2 Chinese traditional instruments, Guzheng and Erhu, etc. There are some kinds of tuning modes for each instrument also, such as FLAT tuning, Drop D/Drop C tuning.

With TUNE MASTER, you don't have to remember all the tuning notes for your instruments, it will display tuning notes for the instruments you select, you don’t have to do the mazy settings, all the options is chosen in the same screen, because all we have done we hope is to make tuning an easy thing for you.

TUNE MASTER requires an internal microphone (iPhone/iPad/iPod4, 1st generation iPod touch does not support Apple headset with microphone) or an external microphone such as Apple headset with Microphone, Peterson Mini Capsule Microphone.

For better detection, you’d better choose an INPUT pickup to tune your instrument, such as iCable offered by Peterson, iRig by IK Multimedia.

Chromatic tuning modes and transposed tuning modes
16 popular kinds of calibration settings
26 instruments tuning modes
Pitch names of each mode is displayed for reference
Wide detection range from G1 to G7

Supports 26 Instruments
6-String Guitar
7-string Guitar
8-string Guitar
12-string Guitar
4-String Bass
5-string Bass
6-string Bass
7-string Bass
Piccolo Bass
4-String Ukulele
6-String Ukulele
8-String Ukulele
Double Bass
6-String Bouzouki
8-String Bouzouki

iPhone Screenshots

iPhone Screenshot 1
iPhone Screenshot 2
iPhone Screenshot 3

Customer Reviews

Does not work

This app used to be my favorite ukulele tuner app! Recently it stopped working. The app opens but it doesn't show any indication that it is receiving any sound. At first I thought it was my phones microphones fault, so I tried plugging in my earphones to see if it would register anything with that on. Still nothing. With all hope lost, I went to see if it was just my phone not recording sound, but on my video, the sound goes through fine; pointing to only one thing. This app does not work. Such a shame too. It used to work wonderfully.


This is a really nice app. I was just starting out learning guitar and I snapped 2 E strings and then I got this app. Not on string broken! I love this app. It is handy that if gives you different tunings for your guitar and uke or any other you pick! I only wish it had a tone setting. Now that would be amazing.


I searched and searched the app store for a decent tuner and none were good until I found this app. It's simple and easy to use, and more importantly it actually works very well. I highly recommend this app and for 99 cents it's a must buy!!!

View in iTunes
  • $1.99
  • Category: Music
  • Released:
  • Version: 1.0
  • Size: 9.2 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 4.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

Current Version:

More iPhone Apps by DMI LABS LLC