Comparison

Midiflow vs UxMIDI Tools

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

Head to head
About

Midiflow

This app enables seamless MIDI data transfer between different applications on your device. It allows for app synchronization, routing MIDI from sequencers to synths, and assigning keyboard zones. Users can save and recall configurations, and monitor MIDI activity.

Highlights
  • App-to-app MIDI routing
  • MIDI clock synchronization
  • Channel filtering and remapping
  • Note and velocity manipulation
  • Custom virtual MIDI ports
  • Preset saving and recall
  • Controller filtering and remapping (in-app purchase)
Features
Read full description

Midiflow allows you to send MIDI from app to app in a similar way to what you already do with audio. That way, you can sync apps with each other or send MIDI parts from a sequencer app to different synth apps. You can also route the MIDI from your keyboard to apps and assign different key zones to them. Different settings can be stored as a preset, recalled later and inserted into another preset. Furthermore, all MIDI transfer can be monitored in order to find problems or just to learn what MIDI is doing (normally) behind the scenes. Important news: There is a full documentation on the Midiflow website now! HOW DOES IT WORK? Midiflow allows you to create multiple routings. Each routing receives MIDI data on its source and sends it to its destination. The selectable sources and destinations include your CoreMIDI compatible MIDI interface and other apps if they provide a virtual MIDI port. You can also create custom ports that can be used by other apps to receive data from Midiflow or send data to it. A routing also has a modifier which allows you to filter data or modify it. That way, you can transpose notes, limit them to a key range, change the MIDI channel of the incoming data, etc. (see the feature list below). LIST OF FEATURES + MIDI clock – specify tempo and your apps will be in sync + Channel filtering and remapping + Velocity filtering – a routing is only active for notes in a given velocity range + Note shift – shift all notes by a given number of half-tone steps + Note remapping – shift each note individually + Velocity remapping – apply a velocity curve, transform to fixed velocity, or specify the map value by value. In the latter case, you can also export the mapping to the clipboard, edit it in another app like Apple Numbers, and paste it back in Midiflow + Filtering out Clock or dividing the tempo into subdivisions + Filtering out SysEx + Connect to other iPads/iPhones via Bluetooth MIDI (iOS8 or higher) + Save a configuration as a preset, which can be recalled later or inserted into another preset + Custom virtual MIDI ports, which can be selected in other apps as a source or destination + Control aspects of Midiflow via MIDI. For example, select presets or control the clock with any MIDI command + Launch your synth apps from Midiflow (works with an increasing number of apps) + Sharing your configurations ADDITIONAL FEATURES (available as an In-app purchase) + Filtering and remapping of controllers – transform (a) the controller type, e.g. from CC1 to pitch-bend or note value to CC1, and (b) transform the value in several ways: as a linear remapping from an input range to an output range, as a curve, or as a value by value list. In the latter case, you can also export the mapping to the clipboard, edit it in another app like Apple Numbers, and paste it back in Midiflow. This allows you to create very sophisticated remappings. + Controller conditions – adjust your routings depending on other MIDI messages. This allows you to create sophisticated behavior within your setup by switching routings on and off. DOES MIDIFLOW WORK WITH MY SYNTH APPS? Midiflow works with every app that has a correct MIDI implementation. In the best case, it has an own virtual MIDI port and can be configured so that it receives MIDI only on that port. Unfortunately, some apps don't have that, but can at least be restricted to one MIDI channel. In that case, you can send to that channel on the global MIDI port "Network Session 1". If you can't select a channel either, then the app won't work with Midiflow. There is a tutorial video on www.midiflow.com that explains this in more detail.

About

UxMIDI Tools

Configure and update firmware for CME USB MIDI devices. Manage routing, mapping, and filtering of MIDI events for precise control over your music production hardware. Requires a USB lightning adapter for connection.

Highlights
  • Firmware updates for CME USB MIDI products
  • Full product configuration
  • MIDI routing management
  • MIDI mapping capabilities
  • MIDI event filtering
  • USB lightning adapter required
Read full description

UxMIDI Tools, the application dedicated to CME USB MIDI products owners. With this software, you will be able to update the firmware of your CME Pro USB products (C2MIDI Pro, U2MIDI Pro, U4MIDI-WC, U6MIDI Pro, etc). The software is also used to fully configure your product, you have an access to the routing, mapping and filtering features. With this software you will be able to configure routing to each MIDI and USB input, you can decide to route any input to any output. You can also decide to filter any incoming MIDI event so it is not forwarded to the routed output. The latest version also offers the possibility to map any incoming MIDI event to another one. This application requires using a USB lightning adapter connected to the iPad or iPhone to connect to CME device through USB cable.

Screenshots

Midiflow4 screens
UxMIDI Tools4 screens

Verdict

The call

The clearest difference is price: UxMIDI Tools at Free against Midiflow's $7.99. UxMIDI Tools also leads on in-app purchases (none vs 3) and update cadence (weekly vs every 5 weeks). Midiflow's advantage is ratings volume (39 vs 1) and review sentiment (59% vs 50%). On rating, ads and device support 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

UxMIDI Tools is free to download; Midiflow costs $7.99 up front. Midiflow sells 3 one-off in-app purchases. UxMIDI Tools asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.0 for Midiflow against 4.0 for UxMIDI Tools. That said, the two scores are not equally well evidenced: Midiflow has 39 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 59% of Midiflow's written reviews are positive against 50% of UxMIDI Tools's.

UpkeepUpdate frequency

Midiflow ships an update every 5 weeks, UxMIDI Tools weekly. The most recent releases landed on September 21, 2026 and September 8, 2026 respectively.

Scorecard7 real differences · 3 level
Midiflow versus UxMIDI Tools: the parameters behind the verdict, then further details
ParameterMidiflowUxMIDI Tools
Price$7.99Free — better
Rating4.0 (39 ratings)4.0 (1 ratings)
Positive reviews58.8% of reviews — better50.0% of reviews
Number of ratings39 — better1
Update frequencyEvery 5 weeksWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS9.0 — better12.0
Further details — not scored
Size4 MB6 MB
Age rating4+4+
DeveloperJohannes DoerrCME PTE. LTD.

Customer experience

Midiflow

All ratings39 ratings
Positive69.2%
Neutral2.6%
Negative28.2%
Written reviews119 reviews
Positive58.8%
Neutral5.0%
Negative36.1%

UxMIDI Tools

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Bugs and requests

Midiflow

Reported bugs

45 issues
  • Frequent crashes while editing CC map
  • Mapped CCs dropped during performance
  • App does not open on iOS 10
  • Layout issues on iPhone 11 (no 'Done' button)
  • App stops working, opens for 2 seconds then closes
Show 40 more
  • Bug in Velocity remapping: 'Reset curve' makes screen blank
  • Note Off messages have vel value = 0
  • App simply doesn't start after paid updates
  • No 'Done' or 'Back' button visible in menus
  • App crashes when editing a song and saving
  • Edits lost after crash
  • Backup song lost after crash
  • App crashes when trying to remap
  • App crashes on first note when Roli Seaboard is connected
  • App closes when searching for nearby devices
  • App closes when selecting 'find nearby devices' or 'advertise device'
  • App doesn't work with iOS 14
  • App doesn't work with iOS 15
  • App doesn't work with iOS 16
  • App crashes on iPad 5 after update
  • App closes immediately after starting
  • No back or cancel button, stuck in menus
  • CC control mapping issues (e.g., CC7 dropped)
  • Bluetooth connectivity crashes the app
  • Program Change to MIDI note remapping not working
  • App doesn't search for nearby devices
  • App force closes when remapping
  • GUI problems with returning to main page
  • App crashes on first note
  • App doesn't load after paid updates
  • No return button
  • Layout issues on iPhone
  • Filter out Note Off messages functionality missing
  • Frequent crashes while editing
  • Mapped CCs dropped during performance
  • Note off velocities are ignored
  • App doesn't open
  • App closes immediately
  • App doesn't work with SampleTank in background
  • Remapping doesn't work properly
  • MIDI messages blocked or morphed
  • Remapping adds code instead of replacing
  • Fixed MIDI channels in Korg iPolysix
  • Does not work with Arturia iMini/iProphet
  • App shutdown on iPad 2

Requested features

6 requests
  • AUv3 plugin version
  • Mass sharing of songs
  • Dark mode
  • Ability to map multiple notes from one key press
  • Individual transpose for split zones
Show 1 more
  • More MIDI features controllable by external hardware

UxMIDI Tools

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Midiflow

One-time3
  • Send Controller On Load$1.99
  • Controller Conditions$2.99
  • Controller Remapping$3.99
None

UxMIDI Tools

No in-app purchases

Questions

Is Midiflow free?
Midiflow costs $7.99, and also offers in-app purchases.
Is UxMIDI Tools free?
UxMIDI Tools is free to download, with no in-app purchases.
Which has better reviews, Midiflow or UxMIDI Tools?
Midiflow and UxMIDI Tools are both rated 4.0 out of 5 on the App Store, from 39 and 1 ratings respectively.
Do Midiflow or UxMIDI Tools have ads?
Neither Midiflow nor UxMIDI Tools shows ads.
Which is updated more often, Midiflow or UxMIDI Tools?
Midiflow ships an update every 5 weeks, and UxMIDI Tools weekly. Most recently, Midiflow was updated on September 21, 2026 and UxMIDI Tools on September 8, 2026.

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