Transcribes violin playing in real-time, allowing you to see your intonation and timing as you play. Play with included sheet music or freestyle. Free to download and try out. Tuning strings, record/playback, and metronome are free. Other features can be sampled before purchase.

- The only tuner that works for double stops
- Records your session so you can review your playing
- Sheet music gets marked up as you play and scored at the end
- Scales and arpeggios in all keys from 1 to 3 octaves with accelerating patterns
- Includes metronome with option to display beats and accent certain beats
- Intonation colors, sensitivity, and temperament, and reference A are configurable
- Synthesize songs to hear the correct intonation and timing
- Customizable displays including treble staff, pitch graph, precision intonation, and double stop interval
- Optimized for iPad and iPhone in landscape and portrait orientation.

Current subscription price is $0.99 per month and auto-renews.
– Payment will be charged to iTunes Account at confirmation of purchase
– Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period
– Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal
– Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase
– Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable

Terms and Conditions:
Privacy Policy:

What's New

Version 1.21

Bug fix for Game mode.
Scales remember last metronome BPM.
Clearing songs/scales does not reset metronome.

Ratings and Reviews

4.7 out of 5
6 Ratings
6 Ratings

My Favorite Music App!

UPDATE: Still my favorite music practice app, but now even better!!! I just discovered it has a "Space Invaders" shooter game that yses intonation as the controller to shoot notes!! Makes sight reading practice so much fun! And playing notes in tune outside of a melodic context is sharpening my ears. This app is so wonderful. I use it several times a day.

I use this app every day while I practice violin. I love it! I love the scales practice, I love the metronome, and I love getting a visual history of my intonation.

Every day I record my sections of my pieces as I practice them. Music Wrench records the audio and records a color coded visual display that tells me how in tune or out of tune each note is.

I actually turn my back to my iPad while I play with Music Wrench running. Then I stop and self evaluate. I think about which notes were flat, which were sharp. and which were in tune. After I self evaluate, I turn around and look at Music Wrench to see how accurate I was. Then I listen to the recording and watch the color coded display as I listen. This has helped my intonation so much! I never practice without it!


Great for vibrato too

This is a surprisingly useful app. Professional musician and teacher.
In the practice mode you can look at width of vibrato and constancy, (yes, keeping 3 down while vibrating 4 visibly helps!) you can see accidental squeaks from bow or bow/finger timing, I suspect there are many more uses than checking intonation.

I wish it worked for the viola C string -it currently does not. It would be nice to have at least the single-line intonation feedback available for those 7 too-low notes.


Great features... lousy user interface

This app could be one of the best in the industry. It has all the requirements for violin (metronome, intonation analysis, scale practice, etc..). It’s really a must for every violin player.

But I really hate the user interface. It seems the developer took it from an older app or software and just posted. It requires significant face lift


Alden Doyle
13.7 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2015 Music Wrench LLC
In-App Purchases
  1. Practice Mode $4.99
  2. Subscription $0.99
  3. Purchase $9.99


  • Family Sharing

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

You May Also Like