Comparison

KeyStage vs VB3m

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

Head to head
About

KeyStage

This app acts as a master controller, AUv3 host, and audio mixer for keyboard players. It allows simultaneous control of multiple hardware and software instruments via MIDI, with advanced mapping, scripting, and audio mixing capabilities.

Highlights
  • Connect multiple MIDI controllers to instruments
  • Load AUv3 instruments, effects, and MIDI processors
  • Create complex keyboard splits and layers
  • Advanced MIDI mapping and scripting
  • Audio mixer with volume and pan control
  • Play and automate audio files
  • View PDF and JPG files
Read full description

TRY THE FREE LITE VERSION: https://apps.apple.com/us/app/keystage-lite/id1437899019 KeyStage is a master controller, AUv3 host, and audio mixer app designed mainly for keyboard players. With KeyStage, you can simultaneously control any number of hardware and software instruments using any number of MIDI controllers in an organized way. Each project consists of sections (which corresponds to sections of a song). In each section you can change sounds and sound parameters of connected instruments, create complex splits and layers of your keyboard(s), change the functionalities of sliders/knobs/pedals of your MIDI controllers by creating advanced MIDI mappings, write your own scripts, view PDF and JPG files (e.g. sheet music) and lyrics, and much more. LIST OF FEATURES • Connect any number of MIDI controller to any number of MIDI instruments by creating tracks. • Load AUv3 instruments, effects, and MIDI Processors. • Assign any region of your keyboard(s) to any connected instrument. • Change velocity curve and velocity limits, and create velocity splits and layers. • Transpose notes and restrict notes to any key using pitch shifter. • Create mixer units to combine audio signals, turning KeyStage into an audio mixer. • With the player units, you can play wav, mp3, and m4a files, add marker points, automate actions (like play, stop, move to a marker etc.) using custom translators, or trigger certain events (like changing sections) when the player reaches a certain marker. • Input units allows you to use the microphone input, or the hardware inputs of a connected audio interface. • The Main Mixer view allows you to control volume levels and pans of all tracks, connect effect units, and connect units to mixer units. • Create instrument presets to easily change sounds of instruments by choosing patch names from patch lists. • KeyStage can also import Cubase Patch Scripts to automatically create instrument presets for your MIDI instruments. • KeyStage automatically detects new MIDI connections and recommends matching instrument presets from a database. • Simulate auto-sustain on any connected instrument. • KeyStage has a multi-track recorder, which lets you record any number of tracks simultaneously. • Change or filter any MIDI signal using custom translators. Use “Relative Control” switch to smoothly change the parameters of your instruments without any jumps. • Use XY control unit to send control change and pitch bend messages to any connected MIDI instrument. • Create setlists, quick access all the songs in a setlist from a setlist bar, move to previous/next songs from live console or using external MIDI. • Create virtual MIDI inputs/outputs for KeyStage. • Use virtual MIDI piano controller to play connected instruments. • View PDF and JPG files. Link any page or region of any file to any section. • Backup and restore your songs and global properties to Dropbox. • Map special actions (like changing octaves, switching sections, changing pages of a PDF file) to notes and controllers using custom translators. • You can write your own scripts in custom translators, which opens up endless possibilities. • Use MPE routing to control any MIDI instrument using MPE controllers like Seaboard. Use custom translators to change the functionalities of each MPE dimension. • KeyStage supports smooth transitions between sections. Pressed notes will continue to sound when you switch sections. You can access demo videos and video tutorials on my Youtube channel.

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
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

VB3m4 screens

Verdict

The call

The clearest difference is price: VB3m at $14.99 against KeyStage's $29.99. VB3m also leads on in-app purchases (none vs 7) and update cadence (fortnightly vs every 3 months). KeyStage's advantage is rating (4.7 vs 4.5) and review sentiment (91% vs 78%). On ratings volume, ads and iOS requirement 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

KeyStage costs $29.99 and VB3m $14.99 up front. KeyStage sells 7 one-off in-app purchases. VB3m asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

KeyStage holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 37 and 40 respectively. Written reviews point the same way: 91% of KeyStage's written reviews are positive against 78% of VB3m's.

UpkeepUpdate frequency

KeyStage ships an update every 3 months, VB3m fortnightly. The most recent releases landed on September 18, 2026 and September 22, 2026 respectively.

Scorecard7 real differences · 3 level
KeyStage versus VB3m: the parameters behind the verdict, then further details
ParameterKeyStageVB3m
Price$29.99$14.99 — better
Rating4.7 (37 ratings) — better4.5 (40 ratings)
Positive reviews91.0% of reviews — better78.0% of reviews
Number of ratings3740 — better
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPadiPhone, iPad, iPod — better
Requires iOS13.012.0 — better
Further details — not scored
Size61 MB24 MB
Age rating4+4+
DeveloperAli GokturkGenuine Soundware

Customer experience

KeyStage

All ratings37 ratings
Positive91.9%
Neutral2.7%
Negative5.4%
Written reviews67 reviews
Positive91.0%
Neutral3.0%
Negative6.0%

VB3m

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

Bugs and requests

KeyStage

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

7 purchases

KeyStage

One-time7
  • Instrument UnitsFree
  • Effect UnitsFree
  • Player, Input, and Mixer UnitsFree
Show 4 more
  • MIDI UnitsFree
  • Small Tip$0.99
  • Medium Tip$3.99
  • Large Tip$9.99
None

VB3m

No in-app purchases

Questions

Is KeyStage free?
KeyStage costs $29.99, and also offers in-app purchases.
Is VB3m free?
VB3m costs $14.99, with no in-app purchases.
Which has better reviews, KeyStage or VB3m?
KeyStage is rated higher. KeyStage averages 4.7 out of 5 from 37 ratings, while VB3m averages 4.5 from 40 ratings.
Do KeyStage or VB3m have ads?
Neither KeyStage nor VB3m shows ads.
Which is updated more often, KeyStage or VB3m?
KeyStage ships an update every 3 months, and VB3m fortnightly. Most recently, KeyStage was updated on September 18, 2026 and VB3m on September 22, 2026.

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