--- title: "RK-006 - Reviews, Revenue and Downloads in United States | Apple App Store" 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 t" --- # RK-006 — United States > RK-006 Master Hub Manager ![RK-006 App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/a6/ea/f2/a6eaf299-7bff-b1a8-c574-1c6c9935c802/AppIcon-0-0-1x_U007emarketing-0-10-0-85-220.png/434x0w.png) **Developer:** [Gerrit Dijkstra](https://apptail.io/developer/gerrit-dijkstra-Wlpc) **Category:** Music **Rating:** 5.0/5 (9 ratings) **Price:** Free **Bundle ID:** com.retrokits.six **Store:** Apple App Store **Country:** United States **Version:** 2.09 (released 2025-04-19) **Original Release:** 2020-06-06 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id1516602717) **AppTail Page:** [https://apptail.io/app/rk-006-WLZf/united-states](https://apptail.io/app/rk-006-WLZf/united-states) ## RK-006 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) ## RK-006 Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/d0/e0/af/d0e0afe8-9e3d-180a-575a-2cb87dc0e2ab/pr_source.jpg/1242x2688.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/7a/ef/2b/7aef2b95-d774-6459-d0fe-a530fae92276/pr_source.jpg/1242x2688.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/f0/35/8d/f0358d4d-8241-d73d-5e85-133a96be7e06/pr_source.jpg/1242x2688.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/dd/4d/f6/dd4df677-df13-43f1-ba4b-889d544e5b07/pr_source.jpg/1242x2688.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/06/0b/8c/060b8ccc-5b60-e33b-bc35-7ffd68eaa225/pr_source.jpg/1242x2688.png) - [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/81/93/41/81934136-aad6-a471-aa83-99a37db80f52/pr_source.jpg/1242x2688.png) ## RK-006 Rating Breakdown in United States - 5 stars: 9 (100%) - 4 stars: 0 (0%) - 3 stars: 0 (0%) - 2 stars: 0 (0%) - 1 stars: 0 (0%) ## RK-006 Reviews in United States ### ***** "Retrokits is UNDERRATED BRILLIANCE" Everything this company makes, wether it be hardware or apps are absolutely some of the best mini midi/audio products on the market. A small boutique company producing absolute gems. They hit the nail on the head with everything that I’ve tried! RK-008, RK-006, TRS and DIN5 dongles; have been game changers in my setup. Give this company your money and support small businesses innovating and modernizing the features we need and want. Portable and studio setups rejoice!!!! Thanks Retrokits! -- pink floyd, David gilmore, 2025-07-14 ### ***** "Retrokits is top notch in every way possible!" What a great company & products! Highly recommended! -- WendysFrostyCarlos, 2024-01-14 [View all RK-006 reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews) ## Apps Similar to RK-006 - [Mozaic Plugin Workshop](https://apptail.io/app/mozaic-plugin-workshop-cZZc/united-states) - [apeMatrix](https://apptail.io/app/apematrix-sjme/united-states) - [Midiflow](https://apptail.io/app/midiflow-IEre/united-states) - [Dexed Synth](https://apptail.io/app/dexed-synth-IKxe/united-states) - [Harmonix](https://apptail.io/app/harmonix-vedl/united-states) - [Patch Base](https://apptail.io/app/patch-base-Bidl/united-states) - [MolliLooper](https://apptail.io/app/mollilooper-kKsm/united-states) - [Fugue Machine Rubato](https://apptail.io/app/fugue-machine-rubato-ZWDv/united-states) - [Battalion - Drum Machine](https://apptail.io/app/battalion-drum-machine-dKVv/united-states) - [M8C Remote Display](https://apptail.io/app/m8c-remote-display-voHw/united-states) ## RK-006 Available In - [United States](https://apptail.io/app/rk-006-WLZf/united-states) - [Netherlands](https://apptail.io/app/rk-006-WLZf/netherlands) - [Australia](https://apptail.io/app/rk-006-WLZf/australia) - [Germany](https://apptail.io/app/rk-006-WLZf/germany) - [France](https://apptail.io/app/rk-006-WLZf/france) - [United Kingdom](https://apptail.io/app/rk-006-WLZf/united-kingdom) - [Brazil](https://apptail.io/app/rk-006-WLZf/brazil) - [Belarus](https://apptail.io/app/rk-006-WLZf/belarus) - [Canada](https://apptail.io/app/rk-006-WLZf/canada) - [Switzerland](https://apptail.io/app/rk-006-WLZf/switzerland) - [Chile](https://apptail.io/app/rk-006-WLZf/chile) - [China](https://apptail.io/app/rk-006-WLZf/china) - [Colombia](https://apptail.io/app/rk-006-WLZf/colombia) - [Czechia](https://apptail.io/app/rk-006-WLZf/czechia) - [Denmark](https://apptail.io/app/rk-006-WLZf/denmark) - [Dominican Republic](https://apptail.io/app/rk-006-WLZf/dominican-republic) - [Algeria](https://apptail.io/app/rk-006-WLZf/algeria) - [Ecuador](https://apptail.io/app/rk-006-WLZf/ecuador) - [Estonia](https://apptail.io/app/rk-006-WLZf/estonia) - [Egypt](https://apptail.io/app/rk-006-WLZf/egypt) - [Spain](https://apptail.io/app/rk-006-WLZf/spain) - [Finland](https://apptail.io/app/rk-006-WLZf/finland) - [Greece](https://apptail.io/app/rk-006-WLZf/greece) - [Hungary](https://apptail.io/app/rk-006-WLZf/hungary) - [Indonesia](https://apptail.io/app/rk-006-WLZf/indonesia) - [Ireland](https://apptail.io/app/rk-006-WLZf/ireland) - [Israel](https://apptail.io/app/rk-006-WLZf/israel) - [India](https://apptail.io/app/rk-006-WLZf/india) - [Italy](https://apptail.io/app/rk-006-WLZf/italy) - [Japan](https://apptail.io/app/rk-006-WLZf/japan) - [South Korea](https://apptail.io/app/rk-006-WLZf/south-korea) - [Kuwait](https://apptail.io/app/rk-006-WLZf/kuwait) - [Kazakhstan](https://apptail.io/app/rk-006-WLZf/kazakhstan) - [Lebanon](https://apptail.io/app/rk-006-WLZf/lebanon) - [Latvia](https://apptail.io/app/rk-006-WLZf/latvia) - [Madagascar](https://apptail.io/app/rk-006-WLZf/madagascar) - [Mexico](https://apptail.io/app/rk-006-WLZf/mexico) - [Malaysia](https://apptail.io/app/rk-006-WLZf/malaysia) - [Norway](https://apptail.io/app/rk-006-WLZf/norway) - [Peru](https://apptail.io/app/rk-006-WLZf/peru) - [Philippines](https://apptail.io/app/rk-006-WLZf/philippines) - [Pakistan](https://apptail.io/app/rk-006-WLZf/pakistan) - [Poland](https://apptail.io/app/rk-006-WLZf/poland) - [Portugal](https://apptail.io/app/rk-006-WLZf/portugal) - [Romania](https://apptail.io/app/rk-006-WLZf/romania) - [Saudi Arabia](https://apptail.io/app/rk-006-WLZf/saudi-arabia) - [Sweden](https://apptail.io/app/rk-006-WLZf/sweden) - [Singapore](https://apptail.io/app/rk-006-WLZf/singapore) - [Slovakia](https://apptail.io/app/rk-006-WLZf/slovakia) - [Thailand](https://apptail.io/app/rk-006-WLZf/thailand) - [Ukraine](https://apptail.io/app/rk-006-WLZf/ukraine) - [Vietnam](https://apptail.io/app/rk-006-WLZf/vietnam) - [Armenia](https://apptail.io/app/rk-006-WLZf/armenia) - [South Africa](https://apptail.io/app/rk-006-WLZf/south-africa) - [Argentina](https://apptail.io/app/rk-006-WLZf/argentina) - [Austria](https://apptail.io/app/rk-006-WLZf/austria) - [Azerbaijan](https://apptail.io/app/rk-006-WLZf/azerbaijan) - [Belgium](https://apptail.io/app/rk-006-WLZf/belgium) - [Bulgaria](https://apptail.io/app/rk-006-WLZf/bulgaria) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. 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