RK vs UxMIDI Tools
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)
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.
- Firmware updates for CME USB MIDI products
- Full product configuration
- MIDI routing management
- MIDI mapping capabilities
- MIDI event filtering
- USB lightning adapter required
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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
Verdict
The clearest difference is rating: RK at 5.0 against UxMIDI Tools's 4.0. RK also leads on review sentiment (67% vs 50%) and ratings volume (9 vs 1). UxMIDI Tools's advantage is update cadence (weekly vs every 5 months). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
RK holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: RK has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 67% of RK's written reviews are positive against 50% of UxMIDI Tools's.
RK ships an update every 5 months, UxMIDI Tools weekly. Both last shipped on October 24, 2026.
| Parameter | RK | UxMIDI Tools |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (9 ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 66.7% of reviews — better | 50.0% of reviews |
| Number of ratings | 9 — better | 1 |
| Update frequency | Every 5 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Gerrit Dijkstra | CME PTE. LTD. |
Customer experience
RK
UxMIDI Tools
In-app purchases
RK
No in-app purchases
UxMIDI Tools
No in-app purchases









