# Cube Synth vs Kauldron Synthesizer

The clearest difference is price: Cube Synth at $1.99 against Kauldron Synthesizer's $9.99. Cube Synth also leads on update cadence (every 4 months vs every 49 months) and review sentiment (89% vs 80%). Kauldron Synthesizer's advantage is ratings volume (136 vs 16) and device support (3 vs 1). On rating, ads, in-app purchases and monetization model there is nothing between them.

Cube Synth costs $1.99 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 — 4.7 for Cube 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 16, so its average is the more settled of the two. Written reviews are what separate them: 89% of Cube Synth's written reviews are positive against 80% of Kauldron Synthesizer's.

Cube Synth ships an update every 4 months, Kauldron Synthesizer every 49 months. The most recent releases landed on September 27, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Cube Synth | Kauldron Synthesizer |
| --- | --- | --- |
| Price | **$1.99** | $9.99 |
| Rating | **[4.7 (16 ratings)](https://appshunter.io/ios/app/cube-synth/id704213054/reviews)** | [4.6 (136 ratings)](https://appshunter.io/ios/app/kauldron-synthesizer/id1292510609/reviews) |
| Number of ratings | 16 | **136** |
| Positive reviews | **89.5% 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 | 19 MB | 32 MB |
| Requires iOS | **12.0** | 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

### Cube Synth

[App page](https://appshunter.io/ios/app/cube-synth/id704213054)

Explore additive synthesis with intuitive sound morphing and deep parameter control. Create complex soundscapes, vocal phrases, or rhythms with ease. Offers a unique randomizer for instant patch generation.

**Highlights:** Additive synthesis engine, Intelligent sound morphing, Over 400 sound presets, Programmable arpeggiator, Multiple built-in effects, Audiobus and Inter-app audio support, Random sound patch generator

**In-app purchases:** none


### 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 Cube Synth free?

Cube Synth costs $1.99, with no in-app purchases.

### Is Kauldron Synthesizer free?

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

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

Cube Synth is rated higher. Cube Synth averages 4.7 out of 5 from 16 ratings, while Kauldron Synthesizer averages 4.6 from 136 ratings.

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

Neither Cube Synth nor Kauldron Synthesizer shows ads.

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

Cube Synth ships an update every 4 months, and Kauldron Synthesizer every 49 months. Most recently, Cube Synth was updated on September 27, 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.*