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
- Import your own songs from MusicXML
- 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

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What’s New

Version 1.26

Songs and scales have scrolling page transitions.
MusicXML file imports allow multiple repeats.
Pitch graph labels more note lines.

Ratings and Reviews

4.7 out of 5
10 Ratings

10 Ratings

Waitlossgyrl ,

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!

Vlaist ,

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.

plant notes ,

Surprisingly effective!

This has become a go-to app for me since it gives continuous intonation feedback in the context of scales, tonality exercises, and even some musical pieces. Given it meets my needs so well and I use it every practice session it deserves 5 stars, but I sure wish it were possible to upload musicXML. Given the limited repertoire, it seems like a demo until you really start to use it. The UI is a bit odd, but you get used to it and it works.


Alden Doyle
27.6 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. Subscription $0.99
  2. Practice Mode $4.99
  3. Purchase $9.99


  • Family Sharing

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

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