KASPAR vs FabFilter Twin 3
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
FabFilter Twin 3
This powerful virtual analog synthesizer offers a vast array of sound-shaping tools, including multiple oscillators, filters, and a comprehensive modulation system. Create a wide range of synth sounds with an intuitive interface and a rich factory preset library.
- Four flexible oscillators
- Four vintage-style filters
- Extensive modulation system
- All-new FX section
- Arpeggiator with groove controls
- Full-featured preset browser
- Analog-modelled drift
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Since its first release in 2005, FabFilter Twin has been famous for its filter quality and oscillator sound. FabFilter Twin 3 expands and improves on its predecessors in every area, including a complete redesign of the GUI and workflow, more and better oscillators and filters, a radically powered-up modulation system, an all-new FX section, and much more. Sonically versatile, supremely intuitive, and spectacularly ‘analog’, Twin 3 is a dream instrument for creating synth sounds of all kinds, from basses, leads, and pads to plucks, drums, effects, and beyond. The Twin 3 app lets you play via the on-screen keyboard or a MIDI keyboard connected to your iPad. To use Twin 3 as a plug-in, you need an AUv3-compatible host app like Auria, AUM or Cubasis. Twin 3 will appear in the list of Audio Unit extensions for instrument plug-ins in the host app. Key features: - Virtual analog synth featuring four flexible oscillators, four filters, six FX modules, and a vast modulation system with a wealth of flexible source signal generators, drag and drop source/target routing, and no limit to the number of modulation assignments that can be made - Fully redesigned, greatly simplified interface with easier workflow - Completely overhauled modulation system with redesigned modulation sources, and floating slot and FX panels - All-new FX section, housing Reverb, Delay, Chorus, Phaser, Drive, and Compressor modules - Arpeggiator with Groove/Legato controls, note order, latch options, and more - Full-featured preset browser, with tags, favorites, and search and filter functions, and new factory preset library - Per Oscillator polyphony mode: each incoming note triggers a different oscillator - Bell, Shelf, and Notch vintage-style EQ filter shapes - 6dB/octave filter slope option - Modulatable filter Cutoff/Peak Offset knobs knobs, for adjusting all filters at once - High Quality mode — 4x oversampling - Transient mode turns Envelope Followers into transient detectors - Curve adjustment handles for EG Attack, Decay, and Release stages - Slider mode (vertical-only operation) and Range setting (toggles between bipolar and unipolar behavior) for XY controllers - Hide all modulation sources except for XY controllers and Sliders at a click - Native sustain pedal support - Even better oscillator and filter sound quality, with analog-modelled drift - Maximum number of voices doubled from 32 to 64 - Lower minimum Envelope Generator Attack, Decay, and Release times - Maximum number of XY controllers/Sliders increased to six - Envelope Generator Threshold, XLFO Balance, and Frequency Offset made available as modulation targets - Modulation sources can be renamed - Maximum number of modulation slots increased to 100 - Legato mode for MIDI-triggered XLFO - Range options added to MIDI Sources: Negative (-1 to 0), Centered (-1 to 1), and Positive (0 to 1) - Carefully designed and curated factory presets, plus the ability to save your own presets - Undo/redo and A/B comparison "FabFilter Twin is one of the best virtual analogues we've heard so far, and at this price point it's well worth the investment!" — Computer Music "Once I found FabFilter Twin, I immediately noticed how great it works and how amazing it sounds!" — George Morel
Verdict
The clearest difference is price: KASPAR at $19.99 against FabFilter Twin 3's $24.99. KASPAR also leads on iOS requirement (11.0 vs 14.0). FabFilter Twin 3's advantage is review sentiment (86% vs 75%). 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
KASPAR costs $19.99 and FabFilter Twin 3 $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.6 for KASPAR against 4.6 for FabFilter Twin 3. Both are backed by a comparable volume of ratings — 94 and 42 respectively. Written reviews are what separate them: 75% of KASPAR's written reviews are positive against 86% of FabFilter Twin 3's.
KASPAR ships an update every 16 months, FabFilter Twin 3 every 19 months. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.
| Parameter | KASPAR | FabFilter Twin 3 |
|---|---|---|
| Price | $19.99 — better | $24.99 |
| Rating | 4.6 (94 ratings) | 4.6 (42 ratings) — better |
| Positive reviews | 75.0% of reviews | 86.2% of reviews — better |
| Number of ratings | 94 — better | 42 |
| Update frequency | Every 16 months — better | Every 19 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPad | iPad |
| Requires iOS | 11.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 64 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Yonac Inc. | FabFilter |
Customer experience
KASPAR
FabFilter Twin 3
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
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- 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
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- 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
FabFilter Twin 3
Not enough reviews yet to summarise bugs or requests.
In-app purchases
KASPAR
No in-app purchases
FabFilter Twin 3
No in-app purchases









