Comparison

Addictive Pro vs Krill Synthesizer

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

Head to head
About

Addictive Pro

This app offers a powerful hybrid synthesis engine for creating complex and dynamic sounds. Explore wavetable, noise, virtual analog, and FM synthesis with extensive modulation and effects. It includes a polyrhythm arpeggiator and real-time control options for musical inspiration and sound design.

Highlights
  • Hybrid synthesis engine
  • Wavetable spectrum synthesis
  • Virtual Analog synthesis
  • Polyrhythm Arpeggiator
  • Real-time parameter control
  • Studio-standard effects section
  • AudioUnit Instrument support
Read full description

The hybrid synthesis algorithm on which Addictive Pro is based provides you with efficient means for easy control of complex sounds far beyond usual sound synthesis methods: Addictive Pro provides you a with unique form of Wavetable oscillators. These Wavetables are generated from the harmonic content and the free digital filter structure entered by the user. The sound of up to 12 of this Wavetable oscillators is then further refined with a classic analog filter available in several 24dB and 12dB forms. For the optional noise part of the sound you can use the same sophisticated digital filter struct as for the wavetable oscillators allowing for a vast variety of ever changing noisescapes. The intelligent sound and rhythm randomizer can be applied to different sound aspects separately for really useful sound design and inspiration. A four part polyrhythm Arpeggiator creates complex rhythmical structures with a touch of a finger. Features: Hybrid synthesis engine • Wavetable spectrum synthesis • Noise spectrum synthesis • Virtual Analog synthesis • FM and Ringmodulation synthesis Synthesizer details • Twelve wavetable spectrum oscillators per voice. • Morphing between two wave/filter sets. • Waves contain up to 256 partials. • Hand drawn filter structure. • Spectral noise generator using hand drawn filter structure. • Ten major sound parameters each with independent poly LFO and envelope modulators. • Real time parameter control using two X/Y touch pads, the tilt sensors of the iPad and MIDI Controllers.  • Monophonic or polyphonic with up to 16 voices. • 300 factory presets, unlimited user presets can be shared.  Effect section • Seven studio standard effects concurrently usable: • Oversampled distortion with four different algorithms for antialiased sound. • Low / High equalizer • 8 pole analog Phaser • Flanger • Four line chorus • Stereo/Ping-Pong delay with glitch free delay time change. • Hi end reverberation unit.   Four part Polyrhythm Arpeggiator • Uses programmable sequences with up to 32 steps.  • Can trigger single notes and chords. • Unique randomizer generates Arpeggios with 100% usability. • Factory arpeggios included, unlimited user arpeggios possible. • For each step you can program tie, accent, transposition and note order Global • Play melodies live with the onscreen keyboard. Unique drag function for slides and vibrato. • AudioUnit Instrument • Audiobus 2 with state saving • Inter App Audio • Ableton Link support • Can use CoreMIDI compatible MIDI Keyboard. • Select from dozens of scales and play them with scale optimized keyboard layout. • Audio recorder with share function. • Share user presets. • Support for virtual MIDI input connections. • Multichannel MIDI Learn for external MIDI controllers. • Ableton Link compatible. • MIDI Tempo sync. Start/Stop Arpeggio. • MIDI bank/program change. • Import function for Addictive Synth presets. • File sharing of presets via iTunes possible

About

Krill Synthesizer

This virtual analog polyphonic synthesizer offers a streamlined interface for creating quick synth sounds on iPad. It features two oscillators, an LFO, a low-pass filter, two envelopes, and stereo effects, all accessible from a single screen.

Highlights
  • Virtual analog polyphonic synthesizer
  • Single-screen interface
  • Two oscillators
  • One LFO
  • Low-pass filter
  • Stereo chorus and ping-pong delay
  • 64 presets
Features
Read full description

The GSi Krill Synthesizer was born from a design originally conceived to work as a mono synthesizer on an embedded processor (RP2040), then it was modified to be polyphonic for a more powerful processor (ARM H7) and finally we thought it would be perfect as a AUv3 for iPad, for those quick and dirty synth sounds you sometimes need without getting lost in endless parameter navigation and menu diving. So here it is, just one screen, one knob - one function, what you see is what you get. Two oscillators, one LFO, one low pass filter, two envelopes, stereo chorus, ping-pong delay, 64 presets. Have fun!

Screenshots

Krill Synthesizer1 screens

Verdict

The call

The clearest difference is price: Addictive Pro at $5.99 against Krill Synthesizer's $11.99. Addictive Pro also leads on ratings volume (19 vs 6). Krill Synthesizer's advantage is review sentiment (100% vs 75%) and rating (5.0 vs 4.7). On update cadence, 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

Addictive Pro costs $5.99 and Krill Synthesizer $11.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Krill Synthesizer holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 19 and 6 respectively. Written reviews point the same way: 75% of Addictive Pro's written reviews are positive against 100% of Krill Synthesizer's.

UpkeepUpdate frequency

Addictive Pro ships an update every 2 weeks, Krill Synthesizer weekly. The most recent releases landed on October 21, 2026 and October 11, 2026 respectively.

Scorecard5 real differences · 5 level
Addictive Pro versus Krill Synthesizer: the parameters behind the verdict, then further details
ParameterAddictive ProKrill Synthesizer
Price$5.99 — better$11.99
Rating4.7 (19 ratings)5.0 (6 ratings) — better
Positive reviews75.0% of reviews100.0% of reviews — better
Number of ratings19 — better6
Update frequencyEvery 2 weeksWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPadiPhone, iPad, iPod — better
Requires iOS12.011.0 — better
Further details — not scored
Size58 MB8 MB
Age rating4+4+
DeveloperHarry GohsGenuine Soundware

Customer experience

Addictive Pro

All ratings18 ratings
Positive88.9%
Neutral11.1%
Negative0.0%
Written reviews32 reviews
Positive75.0%
Neutral6.3%
Negative18.8%

Krill Synthesizer

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Addictive Pro

No in-app purchases

None

Krill Synthesizer

No in-app purchases

Questions

Is Addictive Pro free?
Addictive Pro costs $5.99, with no in-app purchases.
Is Krill Synthesizer free?
Krill Synthesizer costs $11.99, with no in-app purchases.
Which has better reviews, Addictive Pro or Krill Synthesizer?
Krill Synthesizer is rated higher. Addictive Pro averages 4.7 out of 5 from 19 ratings, while Krill Synthesizer averages 5.0 from 6 ratings.
Do Addictive Pro or Krill Synthesizer have ads?
Neither Addictive Pro nor Krill Synthesizer shows ads.
Which is updated more often, Addictive Pro or Krill Synthesizer?
Addictive Pro ships an update every 2 weeks, and Krill Synthesizer weekly. Most recently, Addictive Pro was updated on October 21, 2026 and Krill Synthesizer on October 11, 2026.

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