Comparison

Addictive Pro vs Agonizer

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

Agonizer

This app is a monophonic synthesizer focused on bass sounds, developed with a synth bass expert. It features dual wavetable oscillators, a mangle section, and built-in stereo effects. It supports MPE controllers and various audio/MIDI connectivity options for standalone or app-to-app use.

Highlights
  • Monophonic synth engine for bass
  • Dual wavetable oscillators
  • Built-in stereo effects
  • MPE controller support
  • Standalone and AUv3 operation
  • 140+ factory presets
Features
Read full description

Agonizer is a monophonic synthesizer designed in collaboration with YouTuber and synth bass expert Jakob Haq of haQ attaQ Overview: * Monophonic Synth Engine with focus on Bass * Built-in stereo effects * 140+ fine tuned factory presets designed by Jakob Haq * Supports ROLI Seaboard and other MPE controllers out of the box * Standalone operation with support for USB audio interfaces, wired, network & bluetooth MIDI * Audio Unit v3 Extension * Inter App Audio support * Audiobus support * Ableton Link Synth Voice: * Dual Wavetable Oscillators with 40+ Wavetables, Morphing & X-Mod * Dedicated sub osc & noise source * Mangle Section with pre-filter Drive, Bitcrush, Lift and Push controls * VA Ladder filter * Wobulator (Highly tweak-able Sequenced LFO) * LFO with Key and BPM Sync * Variable Slope AD & ADSR Envelopes * Tube based master drive Effects: * 2x stereo effect units * Vintage Chorus * Digital Delay Presets: * Factory bank including 140+ presets designed by Jakob Haq * Preset Management with Templates & Categories * Shared User Presets between Standalone and AUv3 versions * Preset Export & Import Connectivity: * Standalone * AUv3 Instrument * Inter-App Audio Instrument * Audiobus Instrument Requirements: * iOS12+ * iPad Air 2 or newer

Screenshots

Agonizer4 screens

Verdict

The call

The clearest difference is price: Addictive Pro at $5.99 against Agonizer's $19.99. Addictive Pro also leads on in-app purchases (none vs 3) and update cadence (every 2 weeks vs every 5 months). Agonizer's advantage is ratings volume (203 vs 18) and device support (3 vs 1). On rating, review sentiment, ads and iOS requirement 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 Agonizer $19.99 up front. Agonizer sells 3 one-off in-app purchases. Addictive Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Addictive Pro against 4.8 for Agonizer. That said, the two scores are not equally well evidenced: Agonizer has 203 ratings behind it against 18, so its average is the more settled of the two. Written reviews are what separate them: 75% of Addictive Pro's written reviews are positive against 78% of Agonizer's.

UpkeepUpdate frequency

Addictive Pro ships an update every 2 weeks, Agonizer every 5 months. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

Scorecard6 real differences · 4 level
Addictive Pro versus Agonizer: the parameters behind the verdict, then further details
ParameterAddictive ProAgonizer
Price$5.99 — better$19.99
Rating4.7 (18 ratings)4.8 (203 ratings) — better
Positive reviews75.0% of reviews77.8% of reviews — better
Number of ratings18203 — better
Update frequencyEvery 2 weeks — betterEvery 5 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPadiPhone, iPad, iPod — better
Requires iOS12.011.0 — better
Further details — not scored
Size58 MB362 MB
Age rating4+4+
DeveloperHarry GohsKai Aras

Customer experience

Addictive Pro

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

Agonizer

All ratings203 ratings
Positive95.6%
Neutral1.5%
Negative3.0%
Written reviews81 reviews
Positive77.8%
Neutral6.2%
Negative16.0%

Bugs and requests

Addictive Pro

Not enough reviews yet to summarise bugs or requests.

Agonizer

Reported bugs

16 issues
  • Keyboard does not properly handle legato/mono-synth note priority
  • Crashes in Audiobus, AUM, and Cubasis host applications
  • No sound output when used as AUv3 plugin in hosts
  • No sound in GarageBand integration
  • App freezes on splash screen with iOS 18.3
Show 11 more
  • Stuck notes and failed note triggering
  • Scream button malfunction when switching presets
  • Cutoff knob lag in AUv3 scenarios
  • UI jitter and text cutoff on iPhone
  • Favorite preset feature not working on iPhone
  • Program change not working properly in hosts
  • Always opens with init preset in host applications
  • Modulation matrix sensitivity too high (2% movement = large range)
  • Audio output peaks in red with no sound
  • Permanent clipping/damaged audio output
  • Misleading IAP pricing display (showing 'FREE' for paid content)

Requested features

10 requests
  • Polyphony mode or toggle between mono and poly
  • Envelope drawing capability instead of preset selection
  • Menu-based waveform selection instead of cycling
  • Arpeggiator function
  • Preset browser search and favorites filter
Show 5 more
  • Extended automation control for all knobs
  • Keytracking for filter
  • Reverb effect
  • Accelerometer/gyroscopic velocity sensitivity
  • Customizable number of keyboard keys

In-app purchases

None

Addictive Pro

No in-app purchases

3 purchases

Agonizer

One-time3
  • Chrome Oasis Pack$3.99
  • Circuit Bender Pack$3.99
  • Neon Nightmare Pack$4.99

Questions

Is Addictive Pro free?
Addictive Pro costs $5.99, with no in-app purchases.
Is Agonizer free?
Agonizer costs $19.99, and also offers in-app purchases.
Which has better reviews, Addictive Pro or Agonizer?
Agonizer is rated higher. Addictive Pro averages 4.7 out of 5 from 18 ratings, while Agonizer averages 4.8 from 203 ratings.
Do Addictive Pro or Agonizer have ads?
Neither Addictive Pro nor Agonizer shows ads.
Which is updated more often, Addictive Pro or Agonizer?
Addictive Pro ships an update every 2 weeks, and Agonizer every 5 months. Most recently, Addictive Pro was updated on October 13, 2026 and Agonizer on October 14, 2026.

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