Comparison

VOLT Synth vs apeMatrix

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

Head to head
About

VOLT Synth

This app is a virtual analog synthesizer designed for expressive sound creation. It supports multidimensional polyphonic expression (MPE) and offers a variety of synth voice features, built-in effects, and keyboard layouts. It's compatible with MPE hardware and software, as well as standard MIDI controllers.

Highlights
  • Virtual analog synthesizer
  • Multidimensional Polyphonic Expression (MPE)
  • Expressive synth engine
  • Multiple keyboard layouts
  • Built-in stereo effects
  • 100+ factory presets
  • Standalone and AUv3 support
Features
Read full description

VOLT is a virtual analog synthesizer designed to create classic synth sounds while emphasising expressive play. With full support for multidimensional polyphonic expression (MPE) - VOLT is a great companion to any Seaboard player. Overview: * Polyphonic Virtual Analog Synthesizer * Expressive synth engine with MPE, poly-, channel aftertouch & 4D touch keyboard * 5 Keyboard Layouts (Classic, Uniform, String, Scale & Chord) * Built-in stereo effects * 100+ fine tuned factory presets * Supports ROLI Seaboard, LinnStrument, Geoshred and others out of the box * Standalone operation with support for USB audio interfaces, wired, network & bluetooth MIDI * Audio Unit v3 Extension * Inter App Audio support * Audiobus support * Ableton Link Synth Voice: * Variable waveshape * Variable pulse-width (on all waves) * Detunable sub & noise source * SEM style state-variable filter * LFO per voice * Dual ADSR * Poly drive (per voice distortion) * 8x Polyphony / Unison * Detune / Slop * Pan Spread * Arpeggiator Effects: * 3x stereo effect units * Vintage Chorus * Digital Delay (syncable) * Epic Reverb Input/Expression: * MPE MIDI hardware including but not limited to ROLI Seaboard Rise, Seaboard Block, Lightpad Block * MPE MIDI software including but not limited to Geoshred, Geoshred Control * Regular MIDI keyboards featuring channel or poly aftertouch, pitch- and mod wheels * Onscreen 2D Touch Keyboard (supports slide and glide) * Plain MIDI Input Presets: * Factory bank including 100+ expressive presets ready to play out of the box * Preset Management with Templates & Categories * Shared User Presets between Standalone and AUv3 versions * Preset Export & Import via Files.app, Airdrop etc. * iCloud Drive Support Connectivity: * Standalone * AUv3 Instrument * Inter-App Audio Instrument * Audiobus Instrument

About

apeMatrix

This app acts as a powerful host for audio plugins, allowing users to connect and automate various aspects of music creation. It facilitates the integration of favorite FX, MIDI routing, and control over built-in and external plugin parameters.

Highlights
  • Audio Unit and Inter-App Audio support
  • MIDI and audio routing
  • Control Manager for parameter modulation
  • Multiple Matrix grids for plugin hosting
  • MIDI Patch-bay for routing
  • High-quality audio processing
Features
Read full description

Holding true to the standard of apeSoft, apeMatrix continues to push the limits of possibilities in music creation. Automating almost every aspect of linked control, apeMatrix brings all your creation tools together and links them both in MIDI and audio. Letting you inject all your favorite FX both AU and IAA in a very easy and intuitive way. apeMatrix can also assign its Control Manager MIDI, Accelerometer, Scrub and LFO’s to modulate every built-in parameter and any parameter available inside the AUv3 (Audio Unit Plugins). apeMatrix offers 10 slots on each of the three Matrix grids with 2 bus slots on each grid that make it possible to interconnect all 3 Matrix. The MIDI Patch-bay also offers endless possibilities for MIDI routing and control in a similar grid design for both internal and external MIDI control. So you can send and receive MIDI and have ultimate control over where it’s routed. Each Audio Connection on the grid has its own gain control. Just tap on the node and drag will give you the full range of volume control. Or use Mixer to controls the RAU output and automate them using apeSoft’s unique Control Manager MIDI, Accelerometer, Scrub and LFO’s to modulate every built-in parameter and any parameter available inside the AUv3 (Audio Unit Plugins). Turn each slot on or off by a control switch on the Matrix or MIDI control. Control output, pan, mute and solo of each slot and Master output of each Matrix with the built in mixer control or MIDI control. Route your sounds through all a series of FX or route multiple sounds through the very some FX. The possibilities are as endless as your creativity. FEATURES High quality audio up to 32-bit 96kHz Supports Audio Unit extensions, Inter-App Audio Supports multi-channel inputs/outputs audio interfaces Supports Audio Unit Multi-bus input/output (side-chaining) 3 Matrix Audio 3 MIDI Matrix 10 Open Slots per Matrix (hosts up to 30 plugins) 2 Audio Bus Slots per Matrix 2 MIDI Bus Slots per Matrix MIDI Monitor Multi-Channel Audio Route AudioUnit Audio Send Receive Buses MIDI Scale Filtering, Transpose etc… Control Manager (MIDI, Accelerometer, LFO, Scrub) for all Built-In Parameters Control Manager (MIDI, Accelerometer, LFO, Scrub) for all AUv3 (Audio Unit Plugins) Presets Manager and Morphing Pad Save Custom AUv3 Presets Session Saving/Load Save/Load View’s Frame in Presets Transport to sends host sync to Audio Unit plugins and IAA Integrated and configurable MIDI keyboard with scales Connections output and panning controls Post Dynamic Processor Audiobus and Inter-Audio App (Sender and Fx) Audiobus state saving Ableton Link Precise MIDI Clock In/Out AudioShare Compatible AudioCopy Compatible MIDI Manager: Virtual Midi and Network, 14 bit NRPN controllers File Manager, sharing common audio files via iTunes, Dropbox and AudioCopy etc… Variable Sampling Rate (up to 96 kHz) Variable Buffering Size Variable UI Color Schemes BUILT-IN AUv3 (compatibles with other audio hosts) Configurable Sampler with scrub, playable via MIDI V-Meters Oscilloscope/Spectralscope Sender/Receiver (up to 16 buses) Send MIDI messages with LFO Gain/Pan

Screenshots

VOLT Synth4 screens
apeMatrix4 screens

Verdict

The call

The clearest difference is in-app purchases: apeMatrix at none against VOLT Synth's 3. apeMatrix also leads on price ($14.99 vs $19.99) and review sentiment (73% vs 63%). VOLT Synth's advantage is iOS requirement (9.0 vs 17.0). On rating, ratings volume, update cadence and ads 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

VOLT Synth costs $19.99 and apeMatrix $14.99 up front. VOLT Synth sells 3 one-off in-app purchases. apeMatrix asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for VOLT Synth against 4.7 for apeMatrix. Both are backed by a comparable volume of ratings — 193 and 84 respectively. Written reviews are what separate them: 63% of VOLT Synth's written reviews are positive against 73% of apeMatrix's.

UpkeepUpdate frequency

VOLT Synth ships an update every 2 weeks, apeMatrix monthly. The most recent releases landed on October 9, 2026 and October 14, 2026 respectively.

Scorecard5 real differences · 5 level
VOLT Synth versus apeMatrix: the parameters behind the verdict, then further details
ParameterVOLT SynthapeMatrix
Price$19.99$14.99 — better
Rating4.6 (193 ratings)4.7 (84 ratings) — better
Positive reviews62.9% of reviews72.7% of reviews — better
Number of ratings193 — better84
Update frequencyEvery 2 weeks — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS9.0 — better17.0
Further details — not scored
Size92 MB21 MB
Age rating4+4+
DeveloperKai ArasapeSoft

Customer experience

VOLT Synth

All ratings193 ratings
Positive89.6%
Neutral4.1%
Negative6.2%
Written reviews62 reviews
Positive62.9%
Neutral14.5%
Negative22.6%

apeMatrix

All ratings84 ratings
Positive90.5%
Neutral6.0%
Negative3.6%
Written reviews33 reviews
Positive72.7%
Neutral12.1%
Negative15.2%

Bugs and requests

VOLT Synth

Reported bugs

18 issues
  • No MIDI input after 30 seconds
  • Crashing when using multiple AU instances
  • Presets disappear after iOS 14 update
  • Standalone mode broken on recent iOS
  • AU3 not working in Cubasis/NanoStudio 2
Show 13 more
  • Crashes with iCloud Drive for patch storage on iOS 13
  • Preset scroller not accessing sounds
  • Stability issues on iOS 12
  • UI issues in AU mode on iPhone
  • No sound after last update
  • Presets not loading
  • AUv3 UI lacks preset selection slot
  • Preset saving crashes app
  • Digital readout under controls obscured by finger
  • Latched key graphic disappears
  • Legato mode doesn't work with aftertouch
  • Pitch bend limited to 12 steps
  • Global pitch bend setting disappeared

Requested features

7 requests
  • Two fields for sound forward/backward
  • New features and sounds for MPE
  • Dedicated strings section in presets
  • Randomize function for LFOs/envelopes
  • Larger fonts in preset display
Show 2 more
  • Improve envelope snappiness
  • Improve modulation routing options

apeMatrix

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

VOLT Synth

One-time3
  • Dub PackFree
  • haQ attaQ paQ$3.99
  • Red Sky Lullaby Pack$3.99
None

apeMatrix

No in-app purchases

Questions

Is VOLT Synth free?
VOLT Synth costs $19.99, and also offers in-app purchases.
Is apeMatrix free?
apeMatrix costs $14.99, with no in-app purchases.
Which has better reviews, VOLT Synth or apeMatrix?
apeMatrix is rated higher. VOLT Synth averages 4.6 out of 5 from 193 ratings, while apeMatrix averages 4.7 from 84 ratings.
Do VOLT Synth or apeMatrix have ads?
Neither VOLT Synth nor apeMatrix shows ads.
Which is updated more often, VOLT Synth or apeMatrix?
VOLT Synth ships an update every 2 weeks, and apeMatrix monthly. Most recently, VOLT Synth was updated on October 9, 2026 and apeMatrix on October 14, 2026.

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