Comparison

Addictive Synth vs Zeeon synth

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

Head to head
About

Addictive Synth

Create unique sounds and driving loops with a powerful wavetable synthesizer. Explore a vast sonic universe with dynamic oscillators, spectral noise generation, and intelligent randomizers. Play live with an onscreen keyboard or connect a MIDI controller.

Highlights
  • Dynamic wavetable synthesis
  • Spectral noise generator
  • Intelligent randomizer for sounds and arpeggios
  • Onscreen keyboard with live playing capabilities
  • MIDI keyboard compatibility
  • Programmable arpeggiator
  • Audiobus and Inter-app audio support
Read full description

It was never so easy to create beautiful sounds and driving loops. The unique dynamic wavetable synthesis allows you to explore an unprecedented wide range of sonic territory. From acid loops, crystal clear percussions, realistic human choirs to complex musical soundscapes nothing seems impossible with only a handful parameters to tweak. The new spectral noise generator adds a new dimension to the already huge sound universe of Addictive Synth. This generator is the first of its kind and allows for extraordinarily detailed control over the dynamic spectrum of the noisy part of sounds. Despite its complexity it's pretty easy to use and integrates naturally into the sound design philosophy of Addictive Synth. Together with the intelligent randomizer for both sounds and arpeggios you will loose any sense of time and space while exploring unknown sonic territories. Right from the beginning you'll understand why it's named Addictive. ***Best iPad Apps of the Week*** AppAdvice.com "Addictive Synth fixes your craving for a massively customizable synthesizer experience on the iPad." - AppAdvice.com "App Of The Week" at iDesignSound.com Features: Dynamic wavetable synthesizer • Six dynamic wavetable oscillators per voice, up to 48 total. • Continuous morphing between two oscillator sets. • Realtime editing of up to 128 partials (overtones). • Realtime editing of filter structure to create arbitrary body resonances. • Extensive modulation possibilities using up to 4 LFOs and 4 Envelopes. • Control matrix allows real time control of five parameters using the X/Y touch pad, the modulation wheel and the tilt sensors of the iPad.  • Monophonic or polyphonic with 8 voices. • 128 factory presets, unlimited user presets can be shared.  • Up to three effects concurrently usable selected from: equalizer, phaser, flanger, chorus and stereo/cross delay. Live  • Play melodies live with the onscreen keyboard. Drag fingers for slides and vibrato.  • With the Apple iPad Camera Connection Kit you can use a CoreMIDI compatible MIDI Keyboard to control Addictive Synth. • Line 6 MIDI Mobilizer compatible. • Velocity sensitive keyboard. • Select from dozens of scales and play them with scale optimized keyboard layout.   Full featured programmable Arpeggiator • Uses programmable sequences with up to 32 steps.  • Can trigger single notes and chords. • Unique randomizer generates Arpeggios with 100% usability. • 32 Arpeggios included, unlimited useer arpeggios possible. • For each step you can program tie, accent, transposition and note order Global • Audiobus 2 compatible (Output) (requires iOS7 or newer). • Inter-app audio compatible (Instrument/Generator) • Export loops as audio and midi files. • Audio pasteboard for exchange with other Apps • Exchange user presets with File Sharing in iTunes.

About

Zeeon synth

This app is a virtual analog synthesizer that recreates the sound and feel of classic hardware. It features a detailed circuit-modeling engine, powerful modulation, and multiple filter models for rich, organic soundscapes. Explore a vast array of presets and expand your sonic palette with additional sound banks.

Highlights
  • Circuit-modeling engine
  • Powerful modulation matrix
  • Dual oscillators with variable waveforms
  • Multiple filter models
  • Built-in effects unit
  • Audio Unit v3 support
  • Polyphonic step sequencer
Features
Read full description

Zeeon is a virtual-analog synthesizer built on a deeply detailed circuit-modeling engine. We’ve studied classic and modern analog synths to uncover what gives them their unmistakable character and recreated that essence with precision. The result is a unique instrument that delivers the warmth, movement, and organic depth of true hardware. While many emulations sound flat, Zeeon breathes. Every note is alive, with tight lows and shimmering highs. All audio and modulation are processed at 176 kHz (4× oversampling) for uncompromised quality across the entire spectrum. “Desktop-class sound engine … fidelity of this analog emulation goes beyond everything else on iOS.” – App Store review Features • Audio Unit v3 and standalone application with a simple polyphonic step sequencer • Powerful modulation matrix offering self-modulation and cross-layer modulation, 8 modulation slots, 17 signal sources and 41 targets available, both from modulation modules and audio signal path. This takes Zeeon into semi-modular territory. Imagine oscillator waveform, panning, filter cutoff, resonance or LP-HP mode modulated by oscillators or another layer! • 2 oscillators with continuously variable waveforms, hard-sync and sub-oscillator. Carefully simulated analog drift and PSU influence. • Filter: 3 models available: Transistor ladder low pass, OTA cascade low pass and State Variable Filter with continuously variable LP-HP + BP mode. • 2 low frequency oscillators and envelope generators per voice. • Overdrive: diode clipper, transistor saturation, wave folder, pre and post filter. • Up to 2 layers per voice. Layers can modulate each other. • Effects unit: Circuit modelled BBD chorus, bass booster, zero-delay Phaser, Stereo delay and Reverb. • 280 presets and Tutorials bank. 3 additional banks available as IAPs. Full manual and audio demos available at the BeepStreet website.

Screenshots

Zeeon synth3 screens

Verdict

The call

The clearest difference is price: Addictive Synth at $6.99 against Zeeon synth's $14.99. Addictive Synth also leads on in-app purchases (none vs 3) and iOS requirement (6.0 vs 15.6). Zeeon synth's advantage is rating (4.8 vs 4.5) and ratings volume (209 vs 15). On review sentiment 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

Addictive Synth costs $6.99 and Zeeon synth $14.99 up front. Zeeon synth sells 3 one-off in-app purchases. Addictive Synth asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Zeeon synth holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Zeeon synth has 209 ratings behind it against 15, so its average is the more settled of the two. Written reviews complicate that: 78% of Addictive Synth's written reviews are positive against 76% of Zeeon synth's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Addictive Synth ships an update every 4 months, Zeeon synth every 2 months. The most recent releases landed on September 29, 2026 and October 12, 2026 respectively.

Scorecard8 real differences · 2 level
Addictive Synth versus Zeeon synth: the parameters behind the verdict, then further details
ParameterAddictive SynthZeeon synth
Price$6.99 — better$14.99
Rating4.5 (15 ratings)4.8 (209 ratings) — better
Positive reviews78.1% of reviews — better75.9% of reviews
Number of ratings15209 — better
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPadiPhone, iPad, iPod — better
Requires iOS6.0 — better15.6
Further details — not scored
Size47 MB27 MB
Age rating4+4+
DeveloperHarry GohsBeepStreet

Customer experience

Addictive Synth

All ratings15 ratings
Positive86.7%
Neutral6.7%
Negative6.7%
Written reviews114 reviews
Positive78.1%
Neutral7.0%
Negative14.9%

Zeeon synth

All ratings209 ratings
Positive93.8%
Neutral2.4%
Negative3.8%
Written reviews166 reviews
Positive75.9%
Neutral7.2%
Negative16.9%

User reviews

Addictive Synth

From 15 App Store ratings

What we love

  • 🎵 Unique additive synthesis sound palette
  • 🎛️ Intuitive and clean interface design
  • 🎲 Randomizer/dice feature for creative exploration
  • 🎹 Excellent arpeggiator with extensive customization
  • ✏️ Ability to draw custom waveforms and filters

Room to improve

  • 🔊 Harsh, metallic, or shrill sound character
  • 🐛 Crashes on certain iOS versions
  • ⏱️ Tempo drift and synchronization issues
  • 🎹 Small, difficult-to-use on-screen controls
  • 📡 Poor MIDI latency and responsiveness

Zeeon synth

From 209 App Store ratings

What we love

  • 🎨 Excellent sound quality
  • 🎹 Intuitive and well-designed interface
  • 🔧 Flexible and deep sound design capabilities
  • 💻 Seamless integration as an AUv3 plugin
  • 🎚️ Smooth and responsive controls

Room to improve

  • 🐛 Stability issues, crashes on some devices
  • 🔌 Compatibility problems with newer iOS versions
  • 📂 Preset management could be improved
  • 🔀 Lack of MIDI learn and sequencer features
  • 🖥️ UI scaling issues on larger iPad displays

Bugs and requests

Addictive Synth

Reported bugs

13 issues
  • App crashes upon opening on iOS 15.1
  • Static/audio glitches on startup
  • Keyboard width inconsistency across pages
  • Stuck notes with external MIDI controllers
  • Audio playback at 2x speed when pasting from certain apps
Show 8 more
  • Backing track audio silences when switching apps
  • Recording menu doesn't allow selection of new recordings
  • Monophonic playback over virtual MIDI with chords
  • Keyboard lag behind keystrokes
  • Oscillator phase inconsistency
  • Fundamental sine wave audible even when all harmonics disabled
  • Flaky sequence saving functionality
  • App crashes during audio recording/export

Requested features

19 requests
  • MIDI learn functionality
  • Audiobus and IAA sync support
  • MIDI clock/start/stop synchronization
  • Ableton Link integration
  • White/pink noise generator
Show 14 more
  • Better patch/preset organization and banking
  • Undo button for waveform/filter drawing
  • WiFi and email export options
  • Improved recording with flexible bar counts
  • Drawable modulation signals
  • Traditional filter types (LPF, HPF, BPF)
  • MIDI volume control (CC7)
  • Metronome on/off toggle
  • Better visualization of harmonics/partials
  • Evenly spaced harmonic controls
  • Click track during looping
  • Tempo saving with presets
  • More modulation options and FM synthesis
  • Hardware synth versions

Zeeon synth

Reported bugs

4 issues
  • Preset settings not retained after app restart
  • Synth reverts to default settings when reopening Logic Pro project
  • Crashes and freezes on certain iOS 14+ devices
  • Inability to access in-app purchases from within the app

Requested features

5 requests
  • Add MIDI learn functionality
  • Implement a more robust preset management system
  • Include a built-in sequencer with save/load capabilities
  • Improve UI scaling and layout for larger iPad screens
  • Provide better integration with inter-app audio and Audiobus

In-app purchases

None

Addictive Synth

No in-app purchases

3 purchases

Zeeon synth

One-time3
  • OI - Exploration Vol. 1$3.99
  • BB Z-Space$4.99
  • BB Synthwave$4.99

Questions

Is Addictive Synth free?
Addictive Synth costs $6.99, with no in-app purchases.
Is Zeeon synth free?
Zeeon synth costs $14.99, and also offers in-app purchases.
Which has better reviews, Addictive Synth or Zeeon synth?
Zeeon synth is rated higher. Addictive Synth averages 4.5 out of 5 from 15 ratings, while Zeeon synth averages 4.8 from 209 ratings.
Do Addictive Synth or Zeeon synth have ads?
Neither Addictive Synth nor Zeeon synth shows ads.
Which is updated more often, Addictive Synth or Zeeon synth?
Addictive Synth ships an update every 4 months, and Zeeon synth every 2 months. Most recently, Addictive Synth was updated on September 29, 2026 and Zeeon synth on October 12, 2026.

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