# Midiflow Splitter (Audiobus) — Divide the keyboard into zones > MIDI effect app for Audiobus 3 to split and layer keyboard zones for synth apps. (iPhone/iPad app by Johannes Doerr.) - Source: https://appshunter.io/ios/app/midiflow-splitter-audiobus/id1104669188 (this page in markdown: same URL + `.md`) - Developer: [Johannes Doerr](https://appshunter.io/developer/622204117) - Category: Music, Entertainment - Price: $2.99 - Rating: 3.40/5 from 10 App Store ratings · 16 written reviews indexed - Age rating: 4+ - Requires: iOS 10.2 · 5 MB - Languages: American English - Released: 2017-04-03 - Data updated: 2026-08-18 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/midiflow-splitter-audiobus/id1104669188/reviews.md ## What is Midiflow Splitter (Audiobus)? If you play your synth apps with an external keyboard, Midiflow Splitter is an essential tool for you. This MIDI effect app for Audiobus 3 lets you create split and layer configurations in an easy but powerful way. Thanks to Audiobus State Saving, everything can be saved and recalled when your show is about to start. + Add any number of split points + Assign resulting key zones to synth apps + Transpose each synth app in octaves + Choose which controllers (sustain, pitch-bend, etc.) should be active for each synth app + Solo sounds + Supports multiple keyboards NOTE: This app requires Audiobus 3. Create at least two MIDI pipelines with your keyboard as input and different synth apps as output. Then insert this app into the effect ports. MANAGAGE SPLIT POINTS AND ASSIGN ZONES Midiflow Splitter shows all synth apps as rows above the input keyboard. For each synth, you can select in which zone it should be active. The zones of the keyboard are defined by split points. Move, add, or remove split points to adjust the zones. If you are using multiple keyboards, they will show up with independent split point selectors. OCTAVE SHIFT AND CONTROLLER ASSIGNMENT An octave shift can be applied to each synth in your configuration. This is useful if you have assigned a sound to a zone on the lower part of the keyboard, but still want to trigger high notes. Just shift the notes by a couple of octaves, and you're done. You can also activate or deactivate controllers like sustain or pitch-bend for each synth app individually. That way, your controllers only affect the sounds you really want to manipulate, and keep the others unchanged. SOLO After you have set up your split and layer configuration, you might need to tweak a synth's sound again. By activating "solo", all other synth apps will be deactivated so that you have the whole keyboard for this one sound. This is very handy if you have arranged the sound in a layer and quickly want to mute the other sounds for a moment. ## Key features - Create split and layer configurations - Assign key zones to synth apps - Transpose each synth app in octaves - Control active controllers per synth - Solo individual synth sounds - Supports multiple keyboards ## Recent user reviews (10 of 16) All indexed reviews: https://appshunter.io/ios/app/midiflow-splitter-audiobus/id1104669188/reviews.md ### 1/5 — Application instable *2026-08-08* Application instable. Change le setup tout seul ### 1/5 — Pas stable *2025-08-31* Dommage l’idée est top , mais plante trop ! Inutilisable ### 4/5 — Works for me *2024-12-30* I nearly skipped this after seeing three negative reviews but decided to risk it for the low asking price. It works for me. Not quite as good as the one in studio One but I got two arps going and could play them on my Xkeys ipad keyboard. I will use it to play different synths on my Artiphon controller and so far have had no problem using the Sunrizer or Magellan apps. Zeeon had a hanging note problem but that might be that app not this one to blame? Well worth the £2.99 price. ### 2/5 — Instable *2023-10-21* L’idée est bonne, le design lisible mais l’app est instable et de ce fait inutilisable sur scène en association avec Audiobus. ### 1/5 — Save your money! *2021-05-08* App stops working randomly and adds latency ### 1/5 — Crashes constantly! *2021-04-18* 5th gen iPad Mini, 14.5 iPadOS, latest Audiobus 3 ### 1/5 — Crashes constantly *2021-03-13* I would like a refund, it’s a waste of time & expensive ### 1/5 — Massive Bugs!!! *2020-09-30* Great Functionality, I’d love to give 5 stars... I’ve it worked On my iPad Air 2019 massive problems (needs relaunch, freezes, touch not working, no state saving). Please Fix!!!!!! ### 5/5 — I can split my guitar in half! *2020-05-15* I play fingerstyle guitar and was looking for something that pick up MIDI notes from only the three high strings and ignore the notes from the lower strings. I use MIDI Guitar 2 to convert my guitar audio signal into MIDI notes. Things sometimes get a bit messy with fingerstyle playing through MIDI Guitar 2. It really can’t keep up at full speed. I realize that one remedy might be to have only my highest notes transmit MIDI signals and let the rest just be the sound of the guitar itself. MIDI Flow Splitter does just that! Also opens up a lot of possibilities for sound layering and maybe having one instrument play at one octave and another at the next octave and another at.... Really opens up the imagination! I did encounter the problem of note freezing (feedback? infinite sustain) when adjusting the fader for Splitter on Audiobus. I remedied that by not touching that fader. I set my level with the MIDI Guitar 2 fader that comes before in the chain. I could adjust within the MIDI Guitar 2 app as well, I’d guess. ### 1/5 — Just doesn’t work *2019-10-18* Haven’t been updated for a year it seem so since iPadOS it just doesn’t work, all it does is crash AudioBus. ## Frequently asked questions about Midiflow Splitter (Audiobus) ### What is Midiflow Splitter used for? Midiflow Splitter is a MIDI effect app for Audiobus 3 that allows you to divide your external keyboard into multiple zones and assign each zone to a different synth app. This enables complex split and layer configurations for your music setup. ### Does Midiflow Splitter require Audiobus 3? Yes, Midiflow Splitter requires Audiobus 3 to function. You need to insert it into the effect ports of your Audiobus MIDI pipelines, with your keyboard as the input and synth apps as the output. ### How do I set up zones in Midiflow Splitter? You can manage split points by moving, adding, or removing them to define key zones. Each synth app can then be assigned to a specific zone on the keyboard, and this can be done independently for multiple keyboards if you use them. ### Can I transpose notes for individual synths? Yes, Midiflow Splitter allows you to apply an octave shift to each synth app individually. This is useful for adjusting the range of sounds assigned to specific zones on your keyboard. ### How does the 'solo' feature work in Midiflow Splitter? The 'solo' feature temporarily deactivates all other synth apps, allowing you to focus on tweaking the sound of a single synth. This is helpful for arranging layered sounds and quickly muting others. ### What is the price of Midiflow Splitter? Midiflow Splitter is a paid app priced at $2.99. It does not feature in-app purchases or advertisements. ### What devices is Midiflow Splitter compatible with? Midiflow Splitter is compatible with iPhone, iPad, and iPod touch devices. It has an age rating of 4+. ### How often is Midiflow Splitter updated? The latest version of Midiflow Splitter is 1.0.6, which was last updated on May 7, 2024. The app was initially released on April 3, 2017. ## Version history (last 5 releases) ### 1.0.6 — 2024-05-07 Compatibility improvements for recent iOS versions ### 1.0.5 — 2020-12-01 Update for iOS 14 ### 1.0.4 — 2019-11-28 Update for iOS 13 ### 1.0.3 — 2018-06-15 Update for GDPR ### 1.0.2 — 2017-09-14 + Fixes for iOS 11 ## Apps similar to Midiflow Splitter (Audiobus) | App | Rating | Price | Category | | --- | --- | --- | --- | | [In Theory - Interval Keyboard](https://appshunter.io/ios/app/in-theory-interval-keyboard/id1667984658) | 5.0 (4) | $4.99 | Music | | [Guide Track](https://appshunter.io/ios/app/guide-track/id873642046) | 3.9 (8) | $3.99 | Music | | [MIDI FX PRO](https://appshunter.io/ios/app/midi-fx-pro/id6444039855) | 4.0 (4) | $9.99 | Music | | [MIDI FX](https://appshunter.io/ios/app/midi-fx/id1641511918) | 5.0 (4) | Free | Music | | [Auto Bass AUv3 MIDI Generator](https://appshunter.io/ios/app/auto-bass-auv3-midi-generator/id6450610419) | 4.5 (15) | $5.99 | Music | | [BrainBud - Bud App Controller](https://appshunter.io/ios/app/brainbud-bud-app-controller/id6446066258) | 5.0 (2) | $2.99 | Music | ## More apps by Johannes Doerr - [iMIDIPatchbay](https://appshunter.io/ios/app/imidipatchbay/id622204114) - [Midiflow](https://appshunter.io/ios/app/midiflow/id879915554) - [English is Easy – Learn vocabulary with pictures and sound](https://appshunter.io/ios/app/english-is-easy-learn-vocabulary-with-pictures-and-sound/id1056841728) - [Midiflow Keyboard (Audiobus)](https://appshunter.io/ios/app/midiflow-keyboard-audiobus/id1092870508) - [Midiflow Limiter (Audiobus)](https://appshunter.io/ios/app/midiflow-limiter-audiobus/id1107244412) All apps by Johannes Doerr: https://appshunter.io/developer/622204117 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-18.*