# Music Wrench

> Real-time violin intonation and timing analysis with recording and sheet music features. (iPhone/iPad app by Alden Doyle.)

- Source: https://appshunter.io/ios/app/music-wrench/id965939820 (this page in markdown: same URL + `.md`)
- Developer: [Alden Doyle](https://appshunter.io/developer/965939819)
- Category: Music, Education
- Price: Free with in-app purchases
- Rating: 4.52/5 from 21 App Store ratings · 29 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.4 · 17 MB
- Languages: English
- Released: 2015-03-24
- Data updated: 2026-06-10
- Monetization: subscription
- User reviews in markdown: https://appshunter.io/ios/app/music-wrench/id965939820/reviews.md

## What is Music Wrench?

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 and recordings to hear the correct intonation and timing
- Import your own songs from MusicXML
- Save recordings to .wav file
- 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: http://www.musicwrench.com/terms
Privacy Policy: http://www.musicwrench.com/privacy

## Key features

- Real-time intonation and timing analysis
- Double stop tuner
- Session recording and playback
- Sheet music markup and scoring
- Scales and arpeggios
- Metronome
- MusicXML import

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Subscription | $0.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Practice Mode | $4.99 | one-time |
| Purchase | $9.99 | one-time |


## Recent user reviews (10 of 29)

All indexed reviews: https://appshunter.io/ios/app/music-wrench/id965939820/reviews.md

### 2/5 — No subscription button anywhere!!

*2025-11-10*

This app is exactly what I’m looking for but the user interface is extremely inelegant and the main screen you see when you’re using it seems too crowded, with the menu bar permanently on the side and impossible to move or minimize. I’ve clicked every button and cant find anywhere to subscribe, and most of the content isn’t available if you don’t subscribe. I’ve tried clicking on some of the grayed-out songs on the “songs” tab and it just says “can’t connect to iTunes Store” for every one. I see from past reviews the paid version of the app used to be $5. It’s now 99 cents a month (according to the “help” tab) and honestly given how slapped-together the app seems I don’t know if that’s worth it. It’s been around for several years and aside from bug fixes I don’t see a lot of effort having been put into making the app look or function better. I’d pay $5 in a heartbeat for the gamble of this app working as well as I need it to, if the app would even let me. Make it $5 and give me a way to pay the $5 and I’ll try it again!

### 5/5 — Unmatched in capability

*2025-09-25*

Music Wrench is unique in its ability to provide real-time feedback on the intonation of both single notes and double-stops while playing the violin. Because it is always recording, you can effortlessly scroll back and review the last minute or so of playing without ever having to think about starting a recording. There is simply nothing else on the market that has its ability to show you whether your intervals are in tune. I’m not sure what I would do without Music wrench.

### 5/5 — Irreplaceable for fiddle intonation

*2023-09-13*

I’ve been using this app for years and just wanted to say thank you, Alden.  I mostly use it for real-time feedback. I don’t know what I would do without it!

It’s wonderful that you make this available for a fraction of the cost of a new set of strings.

### 3/5 — I like it. I don’t love it.

*2023-01-20*

This is a stand out app no doubt. The fact that it recognizes and displays double stops is phenomenal. What I was really really hoping for is some kind of scorekeeping. But there is none. 

This app could be phenomenal and so much more powerful with a more robust interactive scorekeeping system. For instance, a two octave scale is displayed, you play it on your violin, and when you’re done, you ask the app to record the score. The score would be your success at playing each note, for instance, 50% of E flat notes were within 10 cents. 90% of A naturals were within five cents. Etc. 

There is a rudimentary score keeping system limited to an individual song. It’s better than nothing, but I would love to see a comprehensive spreadsheet type of record keeping system that you could use to really drill down to individual notes and hammer out where your biggest problem areas are.

Thank you!

### 5/5 — A must have app!

*2021-07-01*

As accurate as Korg tuners, but has the advantage of the constant display and recording. You can also get visual feedback on vibrato speed and amplitude. All the Suzuki pieces are in the app, play along with instant feedback on intonation and timing with the built in metronome. 
This is the best tuner you can get, more features than any stand alone tuner out there and for a fraction of the price. A must have app for any violinist.

### 5/5 — Simply the best App for violin practice and recording check

*2021-06-18, version 1.28*

I am recommending everyone who is serious about violin playing to use this APP

### 5/5 — Surprisingly effective!

*2019-02-20*

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.

### 4/5 — Good app, waiting for viola version!

*2018-12-29*

I’ve used this with viola for about a year and it’s really improved my intonation a lot. Looking forward to the C string expansion!

### 5/5 — Incredible app for practicing violin.

*2018-05-13, version 1.18*

It amazes me that this app isn’t better know. It’s terrific for practicing fiddle/violin, plus it  has the best electric tuner I’ve ever used. You can use the scale exercises to practice both rhythm and intonation, and it makes it almost fun. There’s just SO MUCH clean functionality in this app.

### 5/5 — Great for vibrato too

*2018-05-03*

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.

## Frequently asked questions about Music Wrench

### What does Music Wrench do?

Music Wrench analyzes your violin playing in real-time, providing visual feedback on your intonation and timing. It helps you identify and correct pitch inaccuracies and rhythmic inconsistencies as you play.

### What are the key features of Music Wrench?

Key features include a tuner that works for double stops, session recording for review, sheet music markup and scoring, scales and arpeggios, a metronome, and customizable intonation settings. You can also import your own songs from MusicXML.

### How much does Music Wrench cost?

The app is free to download and offers basic features like tuning, recording, and a metronome for free. Advanced features require a subscription priced at $0.99 per month, which auto-renews.

### What devices is Music Wrench compatible with?

The app is optimized for both iPad and iPhone, supporting both landscape and portrait orientations.

### How can Music Wrench help me improve my violin playing?

By providing immediate visual feedback on your intonation and timing, the app allows you to actively work on improving these crucial aspects of your playing. The recording feature lets you listen back to your performance, and the sheet music markup helps you track your accuracy.

## Version history (last 5 releases)

### 1.30 — 2024-02-26

Fixed audio issue that was causing distorted playback. Increased sample rate from 22.05kHz to 48kHz.

### 1.29 — 2022-08-28

- Fixed pitch graph display, which did not work on some newer devices.

### 1.28 — 2019-10-14

- imported songs remember their screen layout (measure per line, lines per page)
- fixed page turns when Page Lead Time slider is set to minimum (far left)
- fixed bug when importing certain MuscXML files

### 1.27 — 2019-09-18

- Synthesize recorded audio in-tune
- Improved page turns for songs and scales
- Save audio to .wav file
- Button to clear recording

### 1.26 — 2019-08-13

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

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## Related topics

[lalden](https://appshunter.io/ios/topics/lalden)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*