See Your Sound! Quantz Tuner is a music visualization tuning app. It combines real-time pitch detection with 5 unique visualization tools, creating a completely new way to see sound. Its powerful pitch detection algorithm is sensitive enough to record minute fluctuations in vibrato and pitch. Quantz tuner even records your pitch visualizations, allowing you to review your pitch and vibrato information.

TUNING CIRCLE shows your pitch in real-time as a responsive circle. When the circle is perfectly round, your pitch is in tune. It is very easy to use with young players. This tool is also sensitive enough to show the speed and pitch fluctuations of your vibrato.

PITCH LINE is sensitive enough to detect your vibrato’s speed, depth, and regularity throughout your instrument or vocal range. It records your pitch in real time on a graph so that you can look back at your pitch and vibrato history. You can even use this tool to learn to play quartertones and microtones.

NOTE BAR works similarly to Pitch Line, except that pitch is represented by a bar instead of by a dynamic line. Note Bar is best used to examine pitch and rhythm issues with beginning players.

COLOR FIFTHS shows the color wheel superimposed upon the circle of fifths. When you play a given note the appropriate circle will respond by growing. When you stop playing that note the circle shrinks. The natural relationship of tonality and color is exposed and you can observe the color palates and patterns of different types of scales.

PITCH TENDENCIES shows your pitch tendencies accumulated over time. Leave it on while playing for several minutes or an entire piece and observe your tendency to be flat or sharp on any given note.

Play, See, Perfect!

What's New

Version 2.1.1

Version 2.1.1
- Just Intonation (5 limit tuning) is now available with a new setting in the global settings
- Adjusted settings text
- Performance Improvements
- Fixed various UI text scaling issues
- Crash fixes
- Miscellaneous small fixes and improvements

Ratings and Reviews

I have never seen anything like this!!


Any musician who wants to be able to see their vibrato and pitch in a unique real time visual format is going to have their mind blown. This app is instantly responsive to sound and super sensitive to pitch fluctuations. On the Line screen I can observe exactly what my vibrato is doing! Being able to see how fast or slow, shallow or wide my vibrato is enables me to work on gaining greater flexibility and range. The tuning circle screen lets me see at a quick glance exactly what my pitch in doing in real time while I play. So far my students, young and old, have responded with great enthusiasm and quickly grasped pitch and vibrato concepts that have up to now been difficult for them. Skip your morning Starbucks latte and get this app instead! It's worth it.

Great Tuner App

Daniel N L

I was a little hesitant to get this app since it had few reviews, but I have no regrets. As a beginning violinist, it's great for clearly showing how closely I'm hitting the mark, and for making concepts like "sharpness" and "flatness" intuitively apparent. My violin teacher was impressed when I showed it to her. I'm looking forward to taking full advantage of all its features in the years to come.

Best tuner out there!


This tuner is the best out there! It's much better than practicing with a tuner needle or drone. It is so much more than I expected from an iPhone app. I especially love the "Pitch Line" function for tracking vibrato and intonation. It's great to be able to play a phrase and then go back and see which notes were out of tune and if attacks and endings were off.


Shelly Granger
36.9 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2014 Shelly Granger and Doug Gallatin


  • Family Sharing

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

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