Comparison

Ribn vs RK

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

Head to head
About

Ribn

This app provides a unique MIDI controller experience with 8 assignable ribbons. It allows you to record and loop finger movements, adding organic modulation to synthesizers and effects. Control various MIDI-responsive gear, from hardware synths to software instruments.

Highlights
  • 8 MIDI CC ribbon pads
  • Record and loop finger movement
  • Configurable MIDI channel and CC# per ribbon
  • Turn off looping for regular slider functionality
  • Switch between 3 sets of configurations with presets
  • MIDI sending in background
  • iPad landscape mode
Features
Read full description

Ribn is a MIDI controller with 8 assignable ribbons. What makes Ribn unique is its ability to record and loop your finger movement. This allows you to add organic repeating modulation to your synths and effects, kind of like complex LFOs. You can assign a unique MIDI channel and CC# to each ribbon. As long as your gear responds to MIDI CC messages you will be able to control it with Ribn. ** FEATURES ** • 8 MIDI CC ribbon pads • Add modulation to your MIDI hardware synths, effects, eurorack modulars, drum machines, etc. • Configurable MIDI channel and CC# per ribbon • You can name each ribbon to help you identify what parameter it's controlling • Turn off looping on individual ribbons to turn them into regular sliders • Choose any number of ribbons between 1 and 8 • Full screen mode (removes navigation bar to help you focus) • Switch between 3 sets of configurations using presets • MIDI sending works while the app is in the background • iPad landscape mode • Select multiple MIDI outputs • Ribbons record and loop your finger movement • Use a wired MIDI interface, Bluetooth or Wi-Fi • All settings are saved automatically • Works with external hardware as well as other iOS synths • Works on iPhone (including iPhone X) and iPad starting with iOS 10 ** EXAMPLE USES ** • Control hardware MIDI synths parameters like the filter cutoff frequency, resonance, oscillator octave, etc. • Control any soft synth in Ableton Live (or your favorite DAW) by connecting your iOS device to your Mac via Wi-Fi and choosing "Session 1" as the MIDI output in Ribn. • Control your Eurorack modules by running Ribn through a MIDI to CV converter. • Control other iOS synths like the Moog Model 15 or Arturia iSEM. • Control drum machines and effects. For example, try controlling the room size of a reverb effect unit with a looping ribbon or the snappiness of a snare drum on a drum machine. The possibilities are endless. • Daisy chain your MIDI hardware using MIDI Thru ports and assign each ribbon to a different MIDI channel. This way you can control more than one piece of hardware at a time. For example, you can assign the first 4 ribbons to a synth and the last 4 to an effect unit. ** HOW IT WORKS ** • Connect your MIDI gear (like a synth) to your iOS device using a MIDI interface (wired or bluetooth) • Launch Ribn and select your MIDI interface in the settings page. • Find out which CC# and MIDI channel your gear responds to (usually at the end of the manual) and enter this information in RIbn's edit view. • Slide your finger on a ribbon to send CC values and control the parameters on your MIDI gear. ** WHAT IS MIDI AND CC? ** • MIDI is just the way electronic musical instruments talk to each other. • CC (Continuous Controller) is just a way to control various parameters using MIDI. For example, a synth's filter cutoff frequency can be controlled using a MIDI CC signal. ** NOTE ** • Ribn is a MIDI controller and doesn't produce any sounds. To use Ribn you must connect it to a device that responds to MIDI CC signals (check your gear's manual to be sure). • Ribn doesn't send note data, it only sends CC signals (you can't play melodies with it, but you can control various parameters like synthesizer filters, or effects settings). • To connect your iOS device to MIDI gear you will need to buy a MIDI interface. A MIDI interface typically connects to your iOS lightning port and provides standard MIDI DIN ports to connect to your hardware. There are also bluetooth MIDI interfaces that connect wirelessly. Alternatively, you can connect to your Mac over Wi-Fi and control software synths that way. This setup is a little more complex but totally doable (I've tested controlling Ableton Live plugins over Wi-Fi with Ribn and it worked perfectly). • Audiobus and AUv3 are not supported at this time. However, you can still control other iOS synths by routing the internal MIDI ports and having Ribn run in the background.

About

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.

Highlights
  • RK006 Master Hub management
  • MIDI, CV/Gate control
  • Preset design and saving
  • Event filtering
  • Clock processing
  • Output mode configuration
Features
Read full description

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)

Screenshots

Ribn4 screens
RK4 screens

Verdict

The call

The clearest difference is price: RK at Free against Ribn's $3.99. RK also leads on rating (5.0 vs 4.8). Ribn's advantage is update cadence (every 3 days vs every 5 months) and review sentiment (91% vs 67%). On 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

CostPrice · In-app purchases · Ads · Monetization

RK is free to download; Ribn costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

RK holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 30 and 9 respectively. Written reviews complicate that: 91% of Ribn's written reviews are positive against 67% of RK's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Ribn ships an update every 3 days, RK every 5 months. The most recent releases landed on September 12, 2026 and July 31, 2026 respectively.

Scorecard7 real differences · 3 level
Ribn versus RK: the parameters behind the verdict, then further details
ParameterRibnRK
Price$3.99Free — better
Rating4.8 (30 ratings)5.0 (9 ratings) — better
Positive reviews90.9% of reviews — better66.7% of reviews
Number of ratings30 — better9
Update frequencyEvery 3 days — betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better13.0
Further details — not scored
Size28 MB3 MB
Age rating4+4+
DeveloperNebojsa PetrovicGerrit Dijkstra

Customer experience

Ribn

All ratings30 ratings
Positive96.7%
Neutral0.0%
Negative3.3%
Written reviews33 reviews
Positive90.9%
Neutral3.0%
Negative6.1%

RK

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive66.7%
Neutral33.3%
Negative0.0%

In-app purchases

None

Ribn

No in-app purchases

None

RK

No in-app purchases

Questions

Is Ribn free?
Ribn costs $3.99, with no in-app purchases.
Is RK free?
RK is free to download, with no in-app purchases.
Which has better reviews, Ribn or RK?
RK is rated higher. Ribn averages 4.8 out of 5 from 30 ratings, while RK averages 5.0 from 9 ratings.
Do Ribn or RK have ads?
Neither Ribn nor RK shows ads.
Which is updated more often, Ribn or RK?
Ribn ships an update every 3 days, and RK every 5 months. Most recently, Ribn was updated on September 12, 2026 and RK on July 31, 2026.

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