# Kauldron Synthesizer vs TfxMod

The clearest difference is price: TfxMod at $1.99 against Kauldron Synthesizer's $9.99. TfxMod also leads on update cadence (every 3 months vs every 49 months) and review sentiment (100% vs 80%). Kauldron Synthesizer's advantage is ratings volume (136 vs 6). On ads, in-app purchases, monetization model and device support there is nothing between them.

Kauldron Synthesizer costs $9.99 and TfxMod $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

TfxMod holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Kauldron Synthesizer has 136 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 80% of Kauldron Synthesizer's written reviews are positive against 100% of TfxMod's.

Kauldron Synthesizer ships an update every 49 months, TfxMod every 3 months. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Kauldron Synthesizer | TfxMod |
| --- | --- | --- |
| Price | $9.99 | **$1.99** |
| Rating | [4.6 (136 ratings)](https://appshunter.io/ios/app/kauldron-synthesizer/id1292510609/reviews) | **[4.8 (6 ratings)](https://appshunter.io/ios/app/tfxmod/id1524639578/reviews)** |
| Number of ratings | **136** | 6 |
| Positive reviews | 79.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 49 months | **Every 3 months** |
| Monetization | Paid | Paid |
| Size | 32 MB | 1 MB |
| Requires iOS | 15.6 | **13.6** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yonac Inc.](https://appshunter.io/developer/288670023) | [Ryo Togawa](https://appshunter.io/developer/1474193056) |

## What reviewers say

### 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


### TfxMod

[App page](https://appshunter.io/ios/app/tfxmod/id1524639578)

This app provides a chorus and flanger audio effect plugin for mobile devices. It emulates the sound of vintage bucket brigade devices with adjustable parameters for delay, feedback, and modulation. It can be used with host applications to process audio input.

**Highlights:** Chorus and flanger effects, BBD-inspired delay lines, Adjustable delay time, feedback, and modulation, Variable LFO rate and waveform, Low-pass and high-pass filters, Stereo width control

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Kauldron Synthesizer free?

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

### Is TfxMod free?

TfxMod costs $1.99, with no in-app purchases.

### Which has better reviews, Kauldron Synthesizer or TfxMod?

TfxMod is rated higher. Kauldron Synthesizer averages 4.6 out of 5 from 136 ratings, while TfxMod averages 4.8 from 6 ratings.

### Do Kauldron Synthesizer or TfxMod have ads?

Neither Kauldron Synthesizer nor TfxMod shows ads.

### Which is updated more often, Kauldron Synthesizer or TfxMod?

Kauldron Synthesizer ships an update every 49 months, and TfxMod every 3 months. Most recently, Kauldron Synthesizer was updated on October 26, 2026 and TfxMod on October 27, 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.*