Comparison

KASPAR vs Tera Pro

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

Tera Pro

Explore a vast array of sound synthesis methods, from analog emulations to modern digital techniques. Combine modules for unique sonic textures, enhanced by an intelligent interface and realtime visual feedback. Expand your sound palette with additional modules available through in-app purchases.

Highlights
  • Multiple synthesis methods (analog, FM, spectral, additive)
  • Physical modeling and wave shaping
  • Intelligent user interface with realtime scopes
  • Flexible module routing
  • 128-voice polyphony with vintage voice modeling
  • Seamless sound switching
  • Extensive preset library
Features
Read full description

Tera Pro brings together all major sound synthesis methods on one table. No matter if you want to recreate sounds from analogue legends or explore modern digital sounds with FM, Waveshaping or Wavetable synthesis. More can be added by In-App Purchases of new modules. Add some flavour of physical modelling and modules for additive synthesis. Combine them altogether for new sound experiences far beyond your wildest dreams. Tame this overwhelming amount of possibilities with Tera Pros intelligent user interface showing you only exactly what you need, paired with realtime oscilloscopes and level indicators helping you seeing what’s going on. Connect the modules with a flexible routing method without the visual cluttering of real wire cables needed in conventional modular synthesisers FAQ What does Tera Pro have that Tera Synth doesn't have ? 1) Additional Sound Modules - Spectrum oscillator ( borrowed from the heart of Addictive Synth ) - Wave shaper / folder opens the west coast synthesis - Vocal Morphing filter - KARPLUS (aka WaveGuide ) with new "Swarm" mode ( 3 detuned delays ) 2) Revised engine - Analog Polysynth Voice Modelling with characteristic subtle voice variations of timbre, pitch and temporal behaviour to get you "The" Analog Sound. - 128 vs 32 voices polyphony - Seamless Sound Switching: change presets during play without cutting off the sound. - 8 times unison for really heavy ambients - Envelope generators with Buchla style "end of cycle" trigger for generative music - Stack/Split Sounds - New effect section 3) Redesigned User Interface - Collapsible modules for clear view of modular structure - No more nasty popups for LFOs/Envelope generators - Realtime oscilloscopes added to selected modules 4) New Presets - About 1000 additional presets in there. Tera never sounded this good... Tera Pro Specifications - 128 voice Modular polyphonic Synthesiser - Mono/Dual/Split Voice Architecture - Modules for analog and FM synthesis - Modules for Spectral Synthesis and Additive Synthesis - Karplus Strong Physical Modelling and Wave Shaping - MIDI Polyphonic Expression (MPE) - Vintage voice modelling for organic warm sound character - 1800+ Factory presets included - PDF Manual included - Standalone, AUv3 and IAA compatible - Ableton Link - Bluetooth MIDI - ... Additional modules through In-App Purchases: - Classic Wavetable synthesis with Import - Classic 6-OP FM Synthesis fully compatible to DX7 sysex files. - BrainZ multiple synthesis module based on MI Plaits Eurorack module. - RingZ physical modelling module based on MI Rings Eurorack module. - CloudZ granular synthesis module based on MI Clouds Eurorack module.

Screenshots

Tera Pro2 screens

Verdict

The call

The clearest difference is price: Tera Pro at $6.99 against KASPAR's $19.99. Tera Pro also leads on update cadence (every 5 days vs every 16 months) and device support (3 vs 1). KASPAR's advantage is in-app purchases (none vs 6). On rating, review sentiment, ratings volume 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

KASPAR costs $19.99 and Tera Pro $6.99 up front. Tera Pro sells 6 one-off in-app purchases. KASPAR 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 KASPAR against 4.6 for Tera Pro. Both are backed by a comparable volume of ratings — 91 and 155 respectively. Written reviews are what separate them: 75% of KASPAR's written reviews are positive against 69% of Tera Pro's.

UpkeepUpdate frequency

KASPAR ships an update every 16 months, Tera Pro every 5 days. The most recent releases landed on October 6, 2026 and October 4, 2026 respectively.

Scorecard5 real differences · 5 level
KASPAR versus Tera Pro: the parameters behind the verdict, then further details
ParameterKASPARTera Pro
Price$19.99$6.99 — better
Rating4.6 (91 ratings)4.6 (155 ratings)
Positive reviews75.0% of reviews — better69.4% of reviews
Number of ratings91155 — better
Update frequencyEvery 16 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPadiPhone, iPad, iPod — better
Requires iOS11.0 — better12.0
Further details — not scored
Size64 MB306 MB
Age rating4+4+
DeveloperYonac Inc.Harry Gohs

Customer experience

KASPAR

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

Tera Pro

All ratings155 ratings
Positive88.4%
Neutral5.8%
Negative5.8%
Written reviews72 reviews
Positive69.4%
Neutral18.1%
Negative12.5%

User reviews

KASPAR

From 91 App Store ratings

What we love

  • ✨ Incredible power and depth
  • 🔊 Amazing and unique sound quality
  • 👍 Easy to use and intuitive UI
  • 💡 Highly configurable and flexible
  • 🎛️ Advanced sound shaping possibilities

Room to improve

  • 🐛 Occasional crashes and instability
  • 💻 High CPU usage
  • 🐞 Bugs in AUv3 implementation
  • 🖼️ UI scaling issues in some DAWs
  • 🤔 Presets can be uninspired or limited

Tera Pro

From 155 App Store ratings

What we love

  • 🎵 Exceptional sound quality and versatile synthesis capabilities
  • 💡 Innovative modular workflow with flexible architecture
  • 🎛️ Extensive preset library (1000+ presets)
  • 🔧 Powerful sound design tools with multiple synthesis types
  • 📱 Available on both iOS and macOS (M1)

Room to improve

  • 🎮 Steep learning curve and complex UI
  • ⌨️ Unconventional on-screen keyboard design
  • 🐛 Frequent crashes and stability issues
  • 🔊 Dangerously loud output without limiter
  • ⚙️ UI elements sometimes unresponsive or laggy

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

Tera Pro

Reported bugs

17 issues
  • App crashes on macOS and iOS
  • Piano keyboard not appearing
  • Wavetable module IAP producing no sound
  • In-app purchases disappearing or not activating
  • Presets causing white noise or feedback blasts
Show 12 more
  • UI glitches preventing parameter adjustment
  • Randomize function not working with wavetable oscillators
  • Arpeggiator losing sync in AUM
  • No sound output until patch toggling
  • LFO panel crashes when adjusting settings
  • Wavetable oscillator remaining silent
  • MIDI Learn settings not clearable
  • App not appearing in iPad Settings or Files app
  • Patches with feedback that require MIDI Panic
  • Inconsistent oscillator routing display
  • Parameter adjustment randomly not working
  • Sample rate unable to be changed

Requested features

15 requests
  • Undo/Redo functionality
  • MIDI Panic button (prominent placement)
  • Output limiter for safety
  • Standard black and white keyboard option
  • Favorites/bookmarking system for presets
Show 10 more
  • MIDI Learn reset/clear functionality
  • Key Hold button on main screen
  • Sampler module
  • Many-to-many modulation matrix
  • Fully dark theme on all UI screens
  • MIDI Program Change support
  • Solo and Mute buttons for oscillators
  • Partial number indicators for spectral oscillator
  • Better file system integration for backups
  • Improved velocity/aftertouch separation on keyboard

In-app purchases

None

KASPAR

No in-app purchases

6 purchases

Tera Pro

One-time6
  • Library WaveShaper$0.99
  • Module Waves$5.99
  • FM 7 module$5.99
Show 3 more
  • Module RingZ$5.99
  • Module BrainZ$6.99
  • Module CloudZ$9.99

Questions

Is KASPAR free?
KASPAR costs $19.99, with no in-app purchases.
Is Tera Pro free?
Tera Pro costs $6.99, and also offers in-app purchases.
Which has better reviews, KASPAR or Tera Pro?
KASPAR and Tera Pro are both rated 4.6 out of 5 on the App Store, from 91 and 155 ratings respectively.
Do KASPAR or Tera Pro have ads?
Neither KASPAR nor Tera Pro shows ads.
Which is updated more often, KASPAR or Tera Pro?
KASPAR ships an update every 16 months, and Tera Pro every 5 days. Most recently, KASPAR was updated on October 6, 2026 and Tera Pro on October 4, 2026.

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