Comparison

Midiflow Splitter (Audiobus) vs VB3m

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

Head to head
About

Midiflow Splitter (Audiobus)

This MIDI effect app allows musicians to divide their external keyboard into multiple zones, assigning each zone to different synth apps. It offers powerful configuration options for split and layer setups, including octave transposition and controller assignment per synth.

Highlights
  • 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
Features
Read full description

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.

About

VB3m

This app is a virtual tonewheel organ emulator, meticulously recreating the sound and functionality of the classic Hammond B3. It offers advanced features like dual manuals, pedalboard, physical modeling, and a versatile rotary speaker effect, all controllable via MIDI.

Highlights
  • Dual manuals and pedalboard
  • Physical modeling engine
  • Rotary speaker effect
  • Tube overdrive simulation
  • MIDI CC mapping
  • AUv3 plugin support
Features
Currently charting
Read full description

GSi VB3m simulates the famous american tonewheel organ better known as the Hammond Organ B3. Main features: - Two manuals plus pedalboard - Two sets of 9 drawbars each for upper and lower manual - Two drawbars for the pedalboard - Physical modeling engine with full polyphony (91 tonewheels) - Rotary speaker effect with two variations plus one static amp - Virtual microphone positioning - Tube overdrive simulation - Two band equalizer - Digital reverb - Program bank with 32 memory locations - On screen keyboard (upper manual only) - Split function - Pedal-to-lower function - Pedal String Bass decay - Global tuning between A=430 Hz and A=450 Hz - Fully customizable Midi CC Mapping with Midi Learn function - Reverse all drawbar CC option - Sustain pedal support for sustaining notes - User selectable Midi channels - Freely assignable Program Change numbers - Low latency Core Audio support - IAA support - AUv3 plugin extension included - Background audio option - Free Cloud service to easily exchange Programs and Midi Maps Please note: to connect a USB-Midi controller, please use Apple's Camera Connection Kit (Lightning to USB-A). Don't connect your recharge cable to a USB host port, that won't transfer Midi data. For better performance, make sure your battery is fully charged or power your device wherever possible. For more details, please read this Q&A article: https://lnx.gsidsp.com/help/knowledgebase.php?article=1

Screenshots

Midiflow Splitter (Audiobus)4 screens
VB3m4 screens

Verdict

The call

The clearest difference is review sentiment: VB3m at 78% against Midiflow Splitter (Audiobus)'s 31%. VB3m also leads on rating (4.4 vs 3.4) and update cadence (fortnightly vs every 11 months). Midiflow Splitter (Audiobus)'s advantage is price ($2.99 vs $14.99) and iOS requirement (10.2 vs 12.0). On ads, in-app purchases, monetization model 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

Midiflow Splitter (Audiobus) costs $2.99 and VB3m $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

VB3m holds the better App Store score, 4.4 against 3.4. Both are backed by a comparable volume of ratings — 10 and 41 respectively. Written reviews point the same way: 31% of Midiflow Splitter (Audiobus)'s written reviews are positive against 78% of VB3m's.

UpkeepUpdate frequency

Midiflow Splitter (Audiobus) ships an update every 11 months, VB3m fortnightly. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

Scorecard7 real differences · 4 level
Midiflow Splitter (Audiobus) versus VB3m: the parameters behind the verdict, then further details
ParameterMidiflow Splitter (Audiobus)VB3m
Price$2.99 — better$14.99
Rating3.4 (10 ratings)4.4 (41 ratings) — better
Positive reviews31.3% of reviews78.0% of reviews — better
Number of ratings1041 — better
Update frequencyEvery 11 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank—#68 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.2 — better12.0
Further details — not scored
Size5 MB24 MB
Age rating4+4+
DeveloperJohannes DoerrGenuine Soundware

Customer experience

Midiflow Splitter (Audiobus)

All ratings10 ratings
Positive60.0%
Neutral0.0%
Negative40.0%
Written reviews16 reviews
Positive31.3%
Neutral0.0%
Negative68.8%

VB3m

All ratings40 ratings
Positive87.5%
Neutral2.5%
Negative10.0%
Written reviews50 reviews
Positive78.0%
Neutral12.0%
Negative10.0%

Bugs and requests

Midiflow Splitter (Audiobus)

Not enough reviews yet to summarise bugs or requests.

VB3m

Reported bugs

14 issues
  • Sound gets stuck
  • Non funziona più (stops working)
  • Non riesco più a sentire il suono (no sound after iPad update)
  • Sounds get stuck, developer not responding
  • UI is pixelated and needs a refresh
Show 9 more
  • Graphics are very low res (needs fixing!)
  • Blurry graphics on iPad Pro 12”
  • Problems recording with GarageBand iOS
  • Difficulty connecting with MIDI keyboard and audio interface on iPad 9th gen
  • App screen goes dark and no sound when connected to MIDI/audio interface
  • Minor bug: sometimes the app seems to lose track of the (swell) expression pedal
  • Problema GarageBand: not working as Audio Unit with native GarageBand keyboard
  • Latency issues on older iPhone models
  • Battery drains when in background

Requested features

30 requests
  • Add parametric EQ
  • Adjustable sustain
  • Adjustable Leslie transition speed
  • Save drawbar registrations
  • Reverse color keys for quick access
Show 25 more
  • Toggle setting for rotary control
  • Increase UI size
  • Add sustain pedal triggers bass note
  • Add percussion volume control
  • Add black keys to keyboard view
  • Add up/down selector buttons for presets
  • Option to save parameters globally or per preset
  • Add MIDI learn
  • Clean setting on drive knob
  • Leslie speed switch on organ page
  • More presets
  • Integrate half moon Leslie directly on organ screen
  • Add mute function for use with other apps
  • Option to decide buffer size
  • Transpose +2 octaves for lower split
  • More Leslie tweaks (speed, ramp-up times, amp models)
  • Add reverse color keys to keyboard page
  • Allow rotary control to have 'toggle' setting
  • Increase UI size
  • Add user saved presets
  • Add MIDI learn
  • Clean setting on drive knob
  • Leslie speed switch on organ page
  • More presets
  • Expression pedal mapping improvement

In-app purchases

None

Midiflow Splitter (Audiobus)

No in-app purchases

None

VB3m

No in-app purchases

Questions

Is Midiflow Splitter (Audiobus) free?
Midiflow Splitter (Audiobus) costs $2.99, with no in-app purchases.
Is VB3m free?
VB3m costs $14.99, with no in-app purchases.
Which has better reviews, Midiflow Splitter (Audiobus) or VB3m?
VB3m is rated higher. Midiflow Splitter (Audiobus) averages 3.4 out of 5 from 10 ratings, while VB3m averages 4.4 from 41 ratings.
Do Midiflow Splitter (Audiobus) or VB3m have ads?
Neither Midiflow Splitter (Audiobus) nor VB3m shows ads.
Which is updated more often, Midiflow Splitter (Audiobus) or VB3m?
Midiflow Splitter (Audiobus) ships an update every 11 months, and VB3m fortnightly. Most recently, Midiflow Splitter (Audiobus) was updated on October 21, 2026 and VB3m on October 24, 2026.

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