Comparison

KASPAR vs WoodSynth

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

Head to head
About

KASPAR

This powerful synthesizer app offers 8 polyphonic engines with extensive morphing, layering, and modulation capabilities. Create complex sounds with 24 oscillators, 8 filters, and built-in stereo effects. It integrates seamlessly with DAWs and other music apps.

Highlights
  • 8 polyphonic synth engines
  • Multi-Engine Automorphing
  • Extensive modulation system
  • Poly aftertouch support
  • 2 stereo FX busses
  • Audio Unit plugin integration
  • Inter-App Audio and Audiobus support
Read full description

Harness the enormous power of 8 polyphonic synths: meet KASPAR Supersynthesizer! Featuring our cutting edge Multi-Engine Automorphing SuperSynthesis technology, KASPAR is a gigantic machine. A total of 24 oscillators, 8 filters, 8 arps; extensive morphing, automorphing, and layering abilities; a powerful modulation system; poly aftertouch; 2 FX Busses filled with fully stereo Yonac effects — just a few of the amazing features of this behemoth synth! KASPAR comes with tons of pro features. In addition to extensive MIDI capabilities, Inter-App Audio, and Audiobus, it also works as an Audio Unit plug in. Just fire it up in GarageBand or your favorite DAW for even more KASPAR goodness! Top Notch Sound Generation • 8 fully-featured polyphonic synth engines, each with, — 3 oscillators (24 systemwide total!) — Over 20 unique waveforms per oscillator — Special 6-stage ‘dADSHR’ envelopes — 14 types of filters to choose from — Dedicated filter envelope — Arpeggiator with multiple modes — Chordmaker - easily program & play chords by touching a single key — Powerful modulation features (see below) Extensive Modulation • Each synth has a dedicated mod assign matrix with 6 slots • 20 mod targets to choose from, including pitch, timbre, filters and more • Each target can be modulated by a continuous signal, as well as a control signal • 2 LFOs per synth • Modulation envelope • Poly aftertouch • Velocity, Mod Wheel & Key Tracking Morphing • 4 morph groups with onscreen control pad • Automorphing: simply draw a figure on the pad and KASPAR automatically tracks it • Modulate the morph using the x- and y-controls • 6 automorph trigger modes • 4 automorph looping modes • Adjustable, beat-syncable pathread & modulation speeds Layering • Combine the 8 KASPAR synth engines in infinite ways • Each synth comes with dedicated volume and panning, as well as FX1 & FX2 send controls • Conveniently map the synths to regions of the keyboard: great for ‘splitting’ or ‘layering’ multiple synth patches • Each engine has its own transpose & drift controls, as well as adjustable pitch bending, velocity, and aftertouch ranges Professional FX • Two independent FX busses • Each bus contains 8 state-of-the-art stereo FX specially designed for KASPAR • Simply drag-and-drop to change FX signal flow • FX include: — Analog-modeling compressor — 6 band parametric EQ with 9 filter options per band — Stereo chorus with 10 parameters — Stereo phaser — Stereo flanger — Amplifier with 4 virtual circuit types and 4 cabinet types — Stereo delay with BPM syncing — Algorithmic reverb with 14 parameters Professional Features • Standalone app features Inter-App Audio, Audiobus, and Ableton Link • Comes packaged with FREE Audio Unit plugin, with native processing at any standard sample rate • Crystal clear, super high quality audio generation • Virtual ribbon control with polyphonic aftertouch, as well as classic keyboard • Virtual KB velocity with adjustable sensitivity • Extensive MIDI Learn options • MIDI Maps manager with MIDI CC profile saving • Over 300 high quality presets, including an exclusive bank by New Wave Presets • Powerful preset management system: save, share & edit presets System Requirements • Recommended for iPad Air, iPad Pro, iPad Mini 2, or newer

About

WoodSynth

This powerful synthesizer app offers four independent layers, each with its own sound engine, filters, and envelopes. Create complex sounds using VCOs, samples, or wavetables, and control them with a polyphonic touch bar and MPE support. It functions as a standalone app or a plugin within a DAW.

Highlights
  • Four independent synthesizer layers
  • VCOs, samples, and wavetable sources
  • Polyphonic touch bar with pitch bending
  • MPE and MIDI V2 support
  • AUv3 plugin and standalone app
  • 16-step sequencers per layer
  • Advanced modulation options
Features
Read full description

WoodSynth is a synthesizer with 4 independent layers. Each layer is in fact a synthesizer on its own. Each layer has 3 VCO’s plus a samples or wavetable based source, coming from a file or from recording the audio track. Up to 16 voices can be set per layer. Layers can be used in parallel, assigned to a region of the keyboard or used in a sequential mode where the first note(s) on are played by layer 1 and the next note(s) by layer 2 and so on. This last mode allows to have a different sound per note played (and independent from a keyboard region). WoodSynth has a polyphonic pitch-bending touch bar which also displays notes received from a keyboard. Each layer has its own filter and envelope with ADSR per voice, a pitch shifting envelope per VCO, a delay, a basic reverb, a modulator LFO per VCO, 2 general LFO’s and a 16 steps sequencer. Key tracking can be applied on the ADSR attack and release, on the filter cutoff and on the VCO modulation. The app can be used stand-alone (device audio input and output) or as a plugin in a DAW. - IOS plugin type : AUv3 and stand-alone app.
 - Has 4 independent synthesizers, each with up to 16 voices.
 - Supports MPE and Midi V2. - Has a polyphonic touch bar with polyphonic pitch bending.
 - Velocity, channel pressure, (polyphonic) aftertouch, CC74 can be used to modulate several synth parameters.
 - VCO’s have the usual waveforms (sine, saw, square, triangle, pulse and noise) and can be modulated in various ways (FM, AM, Pulse Width, Slew rate)
 - Samples can be recorded from the audio input/track or loaded from file (sample files should be in the WoodSynth iCloud folder)
 - Wavetables can be loaded from file or converted from loaded or recorded samples.
 - Each voice has a 4-pole Moog Lowpass filter with resonance and ADSR envelope.
 - An offset can be set in the Filter cutoff for the R channel to create a stereo effect.
 - Each voice has a pitch shifting ADSR envelope which can be independently enabled for each VCO.
 - Has Key tracking for VCO pan, Filter cutoff, ADSR Envelope Attack and Release.
 - Each layer has a delay unit (which can be separately panned) and a basic reverb.
 - Each layer has a 16 steps sequencer which can run on multiple voices (poly mode).
 - Each layer can set the midi channel and range of receiving midi notes (which allows for up to 4 split keyboard regions).
 - Layers can be set in sequential mode : first note(s) played on layer1, next note(s) on layer2, etc. - Layers have an additional high-pass filter saturation and crush control.
 - Synth audio and delay can be panned independently.
 - The 2 general LFO’s can have their source from the samples or wavetables (or track input).
 - Supports Ableton Link to sync tempo and start-stop.
 - Has 4 User Control rotaries which can be freely assigned.
 - The User Controls can be controlled by a midi CC which can be set or learned.
 - Presets can be stored in iCloud Drive (makes them available on all your devices). - Supports CV out and Sequencer Midi out.

Screenshots

WoodSynth1 screens

Verdict

The call

The clearest difference is rating: KASPAR at 4.6 against WoodSynth's 4.1. KASPAR also leads on review sentiment (75% vs 60%) and ratings volume (94 vs 28). WoodSynth's advantage is update cadence (every 5 weeks vs every 16 months) and price ($15.99 vs $19.99). On ads, in-app purchases and monetization model 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

KASPAR costs $19.99 and WoodSynth $15.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

KASPAR holds the better App Store score, 4.6 against 4.1. Both are backed by a comparable volume of ratings — 94 and 28 respectively. Written reviews point the same way: 75% of KASPAR's written reviews are positive against 60% of WoodSynth's.

UpkeepUpdate frequency

KASPAR ships an update every 16 months, WoodSynth every 5 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard7 real differences · 3 level
KASPAR versus WoodSynth: the parameters behind the verdict, then further details
ParameterKASPARWoodSynth
Price$19.99$15.99 — better
Rating4.6 (94 ratings) — better4.1 (28 ratings)
Positive reviews75.0% of reviews — better60.0% of reviews
Number of ratings94 — better28
Update frequencyEvery 16 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPadiPhone, iPad, iPod — better
Requires iOS11.0 — better15.6
Further details — not scored
Size64 MB203 MB
Age rating4+4+
DeveloperYonac Inc.Woodman's Immaculate Maple Syrup Studio

Customer experience

KASPAR

All ratings91 ratings
Positive87.9%
Neutral4.4%
Negative7.7%
Written reviews56 reviews
Positive75.0%
Neutral10.7%
Negative14.3%

WoodSynth

All ratings28 ratings
Positive75.0%
Neutral3.6%
Negative21.4%
Written reviews20 reviews
Positive60.0%
Neutral15.0%
Negative25.0%

Bugs and requests

KASPAR

Reported bugs

12 issues
  • Sound muted in solo mode for some synths
  • Synth crashes when loading as AUv3 in Roland Zenbeats
  • FX chain not working
  • Program change messages not followed as AUv3 in Cubasis internal track
  • UI does not scale to full screen in Cubasis 3
Show 7 more
  • App crashes when clicking 'help' offline
  • Random crashes inside host (GarageBand/Cubasis) as AUv3
  • Multiple instances play simultaneously when track is not armed
  • Keeps crashing in BeatMaker 3 as AUv3
  • Does not fit screen correctly in Cubasis 3
  • Modulation matrix has issues with aftertouch modulating cutoff frequency
  • Copying presets between layers gets messed up with aftertouch modulation

Requested features

11 requests
  • Add a step sequencer
  • Improve preset variety and inspiration
  • Fix AUv3 program change issues
  • Address UI scaling problems in DAWs
  • Implement MIDI out functionality
Show 6 more
  • Expand modulation matrix capabilities
  • Fix aftertouch modulation issues
  • Integrate help within the app
  • Relocate performance buttons to Morph page
  • Add master volume control to Morph page
  • Add Bluetooth audio support

WoodSynth

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

KASPAR

No in-app purchases

None

WoodSynth

No in-app purchases

Questions

Is KASPAR free?
KASPAR costs $19.99, with no in-app purchases.
Is WoodSynth free?
WoodSynth costs $15.99, with no in-app purchases.
Which has better reviews, KASPAR or WoodSynth?
KASPAR is rated higher. KASPAR averages 4.6 out of 5 from 94 ratings, while WoodSynth averages 4.1 from 28 ratings.
Do KASPAR or WoodSynth have ads?
Neither KASPAR nor WoodSynth shows ads.
Which is updated more often, KASPAR or WoodSynth?
KASPAR ships an update every 16 months, and WoodSynth every 5 weeks. Most recently, KASPAR was updated on November 2, 2026 and WoodSynth on November 3, 2026.

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