Comparison

KASPAR vs Lagrange

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

Lagrange

This app is a hybrid synthesizer that simplifies sound creation by using oscillator algorithms to manage complex parameters. It focuses on quickly achieving desired sounds by selecting the appropriate oscillator type.

Highlights
  • AUv3-compatible synthesizer
  • Simplified sound creation
  • Oscillator algorithms
  • Quick sound selection
  • Hybrid synthesis
Features
Read full description

Lagrange is an AUv3-compatible synthesizer designed to simplify sound creation by concealing complex parameter adjustments within oscillator algorithms. Rather than emphasizing precise sound design, this synthesizer prioritizes selecting the right oscillator type to quickly achieve the sound that suits your needs. For more detailed information about the product, please visit the website. The website offers detailed product descriptions, manuals and videos, as well as important notices. https://icegear.net/

Screenshots

Lagrange4 screens

Verdict

The call

The clearest difference is price: Lagrange at $8.00 against KASPAR's $19.99. Lagrange also leads on update cadence (every 2 weeks vs every 16 months) and review sentiment (95% vs 75%). On ratings volume, 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 Lagrange $8.00 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Lagrange holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 94 and 57 respectively. Written reviews point the same way: 75% of KASPAR's written reviews are positive against 95% of Lagrange's.

UpkeepUpdate frequency

KASPAR ships an update every 16 months, Lagrange every 2 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard5 real differences · 5 level
KASPAR versus Lagrange: the parameters behind the verdict, then further details
ParameterKASPARLagrange
Price$19.99$8.00 — better
Rating4.6 (94 ratings)4.8 (57 ratings) — better
Positive reviews75.0% of reviews95.5% of reviews — better
Number of ratings94 — better57
Update frequencyEvery 16 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPadiPhone, iPad, iPod — better
Requires iOS11.0 — better12.0
Further details — not scored
Size64 MB8 MB
Age rating4+4+
DeveloperYonac Inc.iceWorks, Inc.

Customer experience

KASPAR

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

Lagrange

All ratings57 ratings
Positive96.5%
Neutral0.0%
Negative3.5%
Written reviews22 reviews
Positive95.5%
Neutral4.5%
Negative0.0%

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

Lagrange

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

KASPAR

No in-app purchases

None

Lagrange

No in-app purchases

Questions

Is KASPAR free?
KASPAR costs $19.99, with no in-app purchases.
Is Lagrange free?
Lagrange costs $8.00, with no in-app purchases.
Which has better reviews, KASPAR or Lagrange?
Lagrange is rated higher. KASPAR averages 4.6 out of 5 from 94 ratings, while Lagrange averages 4.8 from 57 ratings.
Do KASPAR or Lagrange have ads?
Neither KASPAR nor Lagrange shows ads.
Which is updated more often, KASPAR or Lagrange?
KASPAR ships an update every 16 months, and Lagrange every 2 weeks. Most recently, KASPAR was updated on October 24, 2026 and Lagrange on October 25, 2026.

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