RK vs Jamcorder
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)
Jamcorder
This app works with a physical device to automatically record everything you play on your digital piano. It offers years of storage, allowing you to track progress and build a personal archive of your music.
- Automatic play detection
- Effortless recording
- Over 25,000 hours of storage
- Track practice progress
- Build personal music archive
- Share recordings
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Have you ever thought, “wow, I wish I recorded that”? Now, it is. Jamcorder is a tiny device you attach to your digital piano that quietly captures everything you play — effortlessly, for life. With automatic play detection and over 25,000 hours of included storage, that’s 3 non-stop years of music, it turns everyday practice into visible progress and a growing personal archive to revisit and share. Requires Jamcorder hardware. Sold separately.
Screenshots
Verdict
RK and Jamcorder both sit at 5.0 stars, but that hides the real split: 100% of Jamcorder's written reviews are positive against 67% of RK's. Jamcorder also leads on update cadence (every 3 days vs every 5 months) and ratings volume (67 vs 9). RK's advantage is iOS requirement (13.0 vs 15.0). On price, rating, ads and in-app purchases 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.
On the App Store both sit at effectively the same score — 5.0 for RK against 5.0 for Jamcorder. That said, the two scores are not equally well evidenced: Jamcorder has 67 ratings behind it against 9, so its average is the more settled of the two. Written reviews are what separate them: 67% of RK's written reviews are positive against 100% of Jamcorder's.
RK ships an update every 5 months, Jamcorder every 3 days. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.
| Parameter | RK | Jamcorder |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (9 ratings) | 5.0 (67 ratings) |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 9 | 67 — better |
| Update frequency | Every 5 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 3 MB | 89 MB |
| Age rating | 4+ | 4+ |
| Developer | Gerrit Dijkstra | Jamcorder |
Customer experience
RK
Jamcorder
In-app purchases
RK
No in-app purchases
Jamcorder
No in-app purchases








