RK vs MidiWrist Unleashed
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RK
Manage your RK006 Master Hub with this app. Design and save configurations, set up presets for event filtering, clock processing, and output modes. Connect your iOS device to MIDI, CV/Gate, and control it from your DAW.
- RK006 Master Hub management
- MIDI, CV/Gate control
- Preset design and saving
- Event filtering
- Clock processing
- Output mode configuration
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This is the manager-app for the RK006 Master Hub. The RK006 features a 12 bus(yes, 12x16 channel MIDI Handling) MIDI Interface and and ultra stable MIDI clock generator. It can MIDI merge from it's two TRS-A MIDI Inputs and even add four self-hosted USBMIDI devices to the stream. It is able to connect your iOS device not only to MIDI but also act as a CV/Gate source with control straight from your DAW. Add extensive MIDI filters and even built-in polychaining to make this the go-to tool for any setup. This app is an iOS port from the online webMIDI portal. It allows you to design and save configurations in the RK006. Via this app you can setup presets which can handle event filtering, clock processing and RK006 port output modes (MIDI/Gate/CV) Some review snippets: "The RK006 is a game changer, making sync, MIDI and signal processing easy, even without a DAW." (juno.co.uk) "Retrokits prove themselves invaluable once again to our increasingly complex and confusing desktop hardware setups." (gearnews.com) "Incredibly versatile hub for MIDI, USB and modular, and probably the only MIDI interface you’ll ever need in or out of the studio." (Sound on Sound)
MidiWrist Unleashed
Transform your Apple Watch into a standalone MIDI controller. Directly connect to Bluetooth LE MIDI devices without your iPhone, offering tactile control with haptic feedback and the digital crown. Customize knobs, buttons, and pages for a personalized music production experience.
- Standalone Apple Watch MIDI controller
- Direct Bluetooth LE MIDI connection
- Digital Crown control with haptic feedback
- Configurable knobs, buttons, and pages
- Transport control for DAWs
- Motion data transmission
- Save and manage presets
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MidiWrist Unleashed turns your Apple Watch into a standalone MIDI controller that directly connects to any advertised Bluetooth LE MIDI device, without the need of your iPhone or any other proxy. The tactile feel of the digital crown combined with haptic feedback, gives you control over any MIDI device by touching your wrist, even when you're not looking. MidiWrist Unleashed makes no sound on its own and can't advertise itself as a Bluetooth LE MIDI device. NOTE: The reliability of Bluetooth LE MIDI support in hardware devices varies. MidiWrist Unleashed was tested with iPhone, iPad, Mac and CME WIDI devices. We can't guarantee the connection stability nor MIDI message latency with other devices. IMPORTANT: MidiWrist Unleashed can only connect to Bluetooth MIDI devices, and doesn't support Siri commands. If you need to connect to other MIDI devices or use the Siri features, the original MidiWrist app is still available with those features. Features: • Standalone MIDI controller for your Apple Watch • Fully configurable on your Watch, no external app is required • Watch face complication to launch the app straight from your watch face • Any number of knobs can be controlled with the Digital Crown • Macro control over multiple MIDI parameters from the Digital Crown • Remotely Play / Stop / Pause / Record / Rewind / Fast Forward your DAW from your Watch • Knobs can be controlled individually or simultaneously • Knobs can be linked to preserve their offsets • Any number of buttons can be toggled by tapping the Watch • Buttons can either be stateful or momentary • Double tap to actuate controls on Apple Watch Series 9, Ultra 2 and later • Buttons and triggers can send a single CC or channel pressure value instead of switching between a minimum and a maximum • Pages can be created with any combination of controls choosing from buttons and knobs • Program changes through the Digital Crown or by tapping the Watch • Transport control over MIDI Machine Control (MMC) or Mackie Control Universal (MCU) • Scrub transport with the Digital Crown • Save / Undo / Redo / Toggle Cycle / Toggle Click / Enter through MCU • XY pad with individual messages for each axis • Stepper panel to step through MIDI values with plus and minus buttons, accelerating as you hold • Motion data (pitch, roll, yaw, acceleration) can be sent in real time • Trigger thresholds for motion data to send discrete messages instead of a continuous stream • Configurable accelerometer range, so a strong movement can be told apart from an ordinary one when you wear the watch somewhere other than your wrist • Optional haptic feedback • Configurable colors for all knobs, buttons and panels • Configurable labels for knobs, buttons and panels • Configurable MIDI channels and MIDI messages (continuous control, program change, channel pressure, note) • Create any number of controller pages you need • Delete and rearrange controller pages • Save your configurations to presets for easy retrieval • MIDI learn for easy controller configuration • Delete and rearrange presets • Connect to other Bluetooth MIDI devices • Low latency and fast response
Screenshots
Verdict
The clearest difference is price: RK at Free against MidiWrist Unleashed's $14.99. RK also leads on rating (5.0 vs 4.2) and iOS requirement (13.0 vs 17.0). MidiWrist Unleashed's advantage is update cadence (every 3 weeks vs every 5 months) and review sentiment (80% vs 67%). On ratings volume, ads, in-app purchases 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
RK is free to download; MidiWrist Unleashed costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
RK holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 9 and 6 respectively. Written reviews complicate that: 67% of RK's written reviews are positive against 80% of MidiWrist Unleashed's, so the app with the better star average is not the one people write more warmly about.
RK ships an update every 5 months, MidiWrist Unleashed every 3 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | RK | MidiWrist Unleashed |
|---|---|---|
| Price | Free — better | $14.99 |
| Rating | 5.0 (9 ratings) — better | 4.2 (6 ratings) |
| Positive reviews | 66.7% of reviews | 80.0% of reviews — better |
| Number of ratings | 9 — better | 6 |
| Update frequency | Every 5 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, Apple Watch |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Gerrit Dijkstra | Uwyn, LLC |
Customer experience
RK
MidiWrist Unleashed
In-app purchases
RK
No in-app purchases
MidiWrist Unleashed
No in-app purchases









