# Addictive Synth vs Kauldron Synthesizer

The clearest difference is update cadence: Addictive Synth at every 4 months against Kauldron Synthesizer's every 49 months. Addictive Synth also leads on price ($6.99 vs $9.99) and iOS requirement (6.0 vs 15.6). Kauldron Synthesizer's advantage is ratings volume (136 vs 15) and device support (3 vs 1). On rating, review sentiment, ads and in-app purchases there is nothing between them.

Addictive Synth costs $6.99 and Kauldron Synthesizer $9.99 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 — 4.5 for Addictive Synth against 4.6 for Kauldron Synthesizer. That said, the two scores are not equally well evidenced: Kauldron Synthesizer has 136 ratings behind it against 15, so its average is the more settled of the two. Written reviews are what separate them: 78% of Addictive Synth's written reviews are positive against 80% of Kauldron Synthesizer's.

Addictive Synth ships an update every 4 months, Kauldron Synthesizer every 49 months. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Addictive Synth | Kauldron Synthesizer |
| --- | --- | --- |
| Price | **$6.99** | $9.99 |
| Rating | [4.5 (15 ratings)](https://appshunter.io/ios/app/addictive-synth/id447072653/reviews) | **[4.6 (136 ratings)](https://appshunter.io/ios/app/kauldron-synthesizer/id1292510609/reviews)** |
| Number of ratings | 15 | **136** |
| Positive reviews | 78.1% of reviews | **79.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 49 months |
| Monetization | Paid | Paid |
| Size | 47 MB | 32 MB |
| Requires iOS | **6.0** | 15.6 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Harry Gohs](https://appshunter.io/developer/382428644) | [Yonac Inc.](https://appshunter.io/developer/288670023) |

## What reviewers say

### Addictive Synth

[App page](https://appshunter.io/ios/app/addictive-synth/id447072653)

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

**In-app purchases:** none

**What reviewers like**

- 🎵 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

**What reviewers complain about**

- 🔊 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

**Reported bugs**

- 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

**Requested features**

- MIDI learn functionality
- Audiobus and IAA sync support
- MIDI clock/start/stop synchronization
- Ableton Link integration
- White/pink noise generator


### Kauldron Synthesizer

[App page](https://appshunter.io/ios/app/kauldron-synthesizer/id1292510609)

This app combines classic analog synth warmth with AI-powered sound design. It offers intelligent preset generation, extensive modulation options, and a powerful arpeggiator for creating rich synth textures.

**Highlights:** AI-powered preset generation (SPAWN²), Analog modeling oscillators, Extensive modulation matrix, Dual XY-pads for control, Powerful arpeggiator, AUv3 plugin support, Over 900 presets

**In-app purchases:** none

**What reviewers like**

- ✨ Warm and rich sound
- 👍 Easy to use interface
- 💡 Great presets included
- 🚀 Powerful sound engine
- 🌟 High quality emulation

**What reviewers complain about**

- 🐛 Buggy AUv3 implementation
- 🔊 Shrill noise issue
- 🔇 No Bluetooth speaker support
- ⚠️ Strange behavior/no reset
- 📉 Lacks oomph/personality

**Reported bugs**

- Oscillators cannot be set to -1 octave
- Shrill noise
- No Bluetooth speaker output
- Fails to reload with Logic projects
- Cannot load into Logic Pro

**Requested features**

- Bring synths/effects to macOS
- Mac App version
- More comprehensive FX section (distortion/saturation)
- MIDI-out for arpeggiator
- Drum machine, PAD launcher, DAW


## Frequently asked questions

### Is Addictive Synth free?

Addictive Synth costs $6.99, with no in-app purchases.

### Is Kauldron Synthesizer free?

Kauldron Synthesizer costs $9.99, with no in-app purchases.

### Which has better reviews, Addictive Synth or Kauldron Synthesizer?

Kauldron Synthesizer is rated higher. Addictive Synth averages 4.5 out of 5 from 15 ratings, while Kauldron Synthesizer averages 4.6 from 136 ratings.

### Do Addictive Synth or Kauldron Synthesizer have ads?

Neither Addictive Synth nor Kauldron Synthesizer shows ads.

### Which is updated more often, Addictive Synth or Kauldron Synthesizer?

Addictive Synth ships an update every 4 months, and Kauldron Synthesizer every 49 months. Most recently, Addictive Synth was updated on October 17, 2026 and Kauldron Synthesizer on October 16, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*