Comparison

MIDI Wrench vs midimittr

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

MIDI Wrench

This app acts as a versatile tool for managing MIDI devices on iOS. It allows you to monitor incoming MIDI messages in real-time and send your own MIDI commands using virtual controls. It's useful for troubleshooting MIDI setups and understanding device communication.

Highlights
  • Monitor incoming MIDI events
  • Send MIDI messages
  • Virtual MIDI keyboard, buttons, and knobs
  • Configurable virtual controls
  • Filter MIDI events
  • Copy MIDI events to clipboard
Read full description

The Swiss army knife for your daily MIDI setup tasks. Connect a MIDI keyboard, MIDI sound expander or any other MIDI device to your iPad, iPhone or iPod touch by using the Apple USB camera adapter or any other adapter supported by Apple. Visualize and monitor MIDI messages sent by the connected MIDI device or send MIDI messages to those connected MIDI devices. This is a simple but helpful tool to find problems in your MIDI setup or simply to spot what kind of messages various MIDI devices are sending exactly. This app supports all hardware and software sources for MIDI, including Bluetooth LE MIDI ! Current Features: • Lists all CoreMIDI devices (i.e. attached MIDI accessories) and all so called "virtual CoreMIDI ports" (i.e. audio Apps) on your iPad / iPhone / iPod touch. • Displays incoming MIDI events of external MIDI hardware and local MIDI apps in real-time. • Send MIDI Note-On, Note-Off and Control Change messages by using the virtual MIDI keyboard, buttons and rotary knobs. • Virtual on-screen MIDI controls are fully configurable, so you may assign other MIDI controller numbers and more. • The virtual keyboard keys, rotary knobs and buttons automatically update to the values sent by connected MIDI devices. • Filter out MIDI events you are not interested in. • Copy MIDI events with one tap to the iOS clipboard, and paste them as text in another app like Mail. This app is free, and it does not contain any ads or other annoying things. Really! Anti-Spy Commitment: We take your privacy very seriously. None of our apps contain so called „spy” behaviors and we committed ourself to a very high privacy standard. MIDI Wrench does not collect any information. For more information about our privacy commitment, read our „Privacy Policy for Mobile Apps”.

About

midimittr

This app enables low-latency MIDI connections to iOS music applications via Bluetooth LE or USB. It routes virtual MIDI ports to external devices, allowing seamless wireless or wired integration with compatible software.

Highlights
  • Low-latency MIDI over Bluetooth LE
  • MIDI over USB connection
  • Routes virtual MIDI ports
  • Connects to other MIDI devices wirelessly
  • Remembers routing settings
  • Works in background
  • MIDI over Lightning cable support
Features
Read full description

midimittr is a simple utility to deliver the experience of low-latency MIDI over Bluetooth LE/USB to iOS Music apps that support MIDI. To achieve this, midimittr is routing the virtual ports of supported applications to Bluetooth and/or the USB Ports. If your favourite application is supporting MIDI, it will most likely work with midimittr. Bluetooth over MIDI is supported in iOS 8+ and a feature of OS X Yosemite 10.10+. For more information please check out the support page. ---- - Connect to other Bluetooth MIDI Hardware, iOS or macOS devices wirelessly - Remembers previous routing settings for an uninterrupted workflow - Works in background - Get even lower latency with MIDI over Lightning cable* - Support for both iPad and iPhone ---- *For MIDI over Lightning cable please download the tool from the support page.

Screenshots

MIDI Wrench4 screens
midimittr3 screens

Verdict

The call

The clearest difference is update cadence: midimittr at every 2 weeks against MIDI Wrench's every 5 months. MIDI Wrench's advantage is iOS requirement (9.0 vs 12.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for MIDI Wrench against 4.5 for midimittr. Both are backed by a comparable volume of ratings — 71 and 54 respectively. Written reviews are what separate them: 89% of MIDI Wrench's written reviews are positive against 91% of midimittr's.

UpkeepUpdate frequency

MIDI Wrench ships an update every 5 months, midimittr every 2 weeks. Both last shipped on November 1, 2026.

Scorecard2 real differences · 8 level
MIDI Wrench versus midimittr: the parameters behind the verdict, then further details
ParameterMIDI Wrenchmidimittr
PriceFreeFree
Rating4.6 (71 ratings) — better4.5 (54 ratings)
Positive reviews88.9% of reviews91.0% of reviews — better
Number of ratings71 — better54
Update frequencyEvery 5 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better12.0
Further details — not scored
Size21 MB10 MB
Age rating4+4+
DeveloperChristian Schoenebeck d/b/a CrudebyteMatthias Frick

Customer experience

MIDI Wrench

All ratings71 ratings
Positive91.5%
Neutral2.8%
Negative5.6%
Written reviews54 reviews
Positive88.9%
Neutral7.4%
Negative3.7%

midimittr

All ratings50 ratings
Positive88.0%
Neutral6.0%
Negative6.0%
Written reviews67 reviews
Positive91.0%
Neutral1.5%
Negative7.5%

User reviews

MIDI Wrench

From 71 App Store ratings

What we love

  • 👍 Essential for MIDI troubleshooting
  • 👍 Free and maintained
  • 👍 Reveals MIDI activity
  • 👍 Solves connection issues
  • 👍 Easy to use

Room to improve

  • ❌ No sound output
  • ❌ Cannot import .mid files
  • ❌ Small keyboard keys
  • ❌ Limited MIDI I/O selection
  • ❌ Few features

midimittr

From 54 App Store ratings

What we love

  • 🚀 Seamless MIDI connection
  • 👍 Easy to use
  • 💡 Solves connectivity problems
  • 💰 Free of charge
  • 🔌 Works with USB and Bluetooth

Room to improve

  • 🐛 Crashes on M1 Mac
  • ❓ No manual or instructions
  • 😞 Developer unresponsive
  • ⚠️ Bluetooth connection issues
  • 🎛️ Toggles not visible on iPad mini

Bugs and requests

MIDI Wrench

Reported bugs

6 issues
  • No sound at all
  • No audio when pressing keys
  • Cannot clear screen, only pause
  • Connection sometimes disconnects after a break
  • App needs to be updated by developers
Show 1 more
  • May slow down phone due to lack of update

Requested features

19 requests
  • Display raw MIDI messages (hex)
  • Manually construct/send MIDI messages (hex/simplified)
  • Import .mid files
  • Audio output for testing
  • Clear screen functionality
Show 14 more
  • Larger or adjustable keyboard size
  • MIDI out capabilities (USB/network)
  • Filter out Active Sense and clock signals
  • Send data out of any MIDI CC number
  • Change key range
  • Set keys to different scales
  • Control desktop VSTs
  • In-app purchase for additional options
  • MIDI patchbay functionality
  • Echo all inputs to outputs for routing
  • Show data source
  • Filter by device
  • Update for newer iOS versions
  • Regularly schedule maintenance time

midimittr

Reported bugs

6 issues
  • 'IOS Audio' crashes app on M1 Mac
  • Disables iPad as audio input on M1 Mac
  • Connection problem with older iOS and Yamaha MD-BT01
  • Toggles not visible on iPad mini
  • App keeps giving pop-ups asking to turn on Bluetooth
Show 1 more
  • Only one device gets MIDI back when two are connected

Requested features

5 requests
  • Auto-reconnect for Bluetooth
  • Logging function with freeze/save and filter
  • Dark mode
  • Audio transmitting as in-app purchase
  • Option for client BT connections to auto-connect

In-app purchases

None

MIDI Wrench

No in-app purchases

None

midimittr

No in-app purchases

Questions

Is MIDI Wrench free?
MIDI Wrench is free to download, with no in-app purchases.
Is midimittr free?
midimittr is free to download, with no in-app purchases.
Which has better reviews, MIDI Wrench or midimittr?
MIDI Wrench is rated higher. MIDI Wrench averages 4.6 out of 5 from 71 ratings, while midimittr averages 4.5 from 54 ratings.
Do MIDI Wrench or midimittr have ads?
Neither MIDI Wrench nor midimittr shows ads.
Which is updated more often, MIDI Wrench or midimittr?
MIDI Wrench ships an update every 5 months, and midimittr every 2 weeks. Most recently, MIDI Wrench was updated on November 1, 2026 and midimittr on November 1, 2026.

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