# PET Bottling vs ThermoSynth

The clearest difference is review sentiment: PET Bottling at 100% against ThermoSynth's 50%. PET Bottling also leads on price ($2.99 vs $34.99). ThermoSynth's advantage is update cadence (every 2 months vs every 7 months) and iOS requirement (9.3 vs 18.1). On ads, in-app purchases, monetization model and device support there is nothing between them.

PET Bottling costs $2.99 and ThermoSynth $34.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PET Bottling ships an update every 7 months, ThermoSynth every 2 months. The most recent releases landed on October 14, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | PET Bottling | ThermoSynth |
| --- | --- | --- |
| Price | **$2.99** | $34.99 |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/thermosynth/id1619491705/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Paid | Paid |
| Size | 73 MB | 25 MB |
| Requires iOS | 18.1 | **9.3** |
| Devices | **iPhone, iPad** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hidenori Matsuoka](https://appshunter.io/developer/369248022) | [SonicPlanet Audio Video Teknolojileri Anonim Sti.](https://appshunter.io/developer/946568989) |

## What reviewers say

### PET Bottling

[App page](https://appshunter.io/ios/app/pet-bottling/id394613675)

This app simulates playing a PET bottle as a percussion instrument, offering a vast array of unique sounds. Beginners can explore various tapping techniques, while professionals can use it for live performances or studio recordings. It includes recording and export functions for integrating your creations into other music projects.

**Highlights:** Simulates PET bottle percussion, 624 unique recorded sounds, Multiple tapping techniques and modes, Adjustable tapping locations, Special effect sounds, Recording and export functionality, Avoids auto-sleep

**In-app purchases:** none


### ThermoSynth

[App page](https://appshunter.io/ios/app/thermosynth/id1619491705)

This app is a generative synthesizer that creates evolving sonic structures inspired by thermodynamic systems. It features a self-regulating hyper oscillator engine with a feedback matrix and stochastic modulators for unique, never-repeating drone synthesis and organic textures.

**Highlights:** Self-regulating hyper oscillator engine, Generative synthesis at waveform level, 4x4 feedback matrix for oscillator interaction, Stochastic modulators for sonic changes, User-controlled injections for system perturbation, MPE support, High-resolution rotary encoder MIDI mapping

**In-app purchases:** none


## Frequently asked questions

### Is PET Bottling free?

PET Bottling costs $2.99, with no in-app purchases.

### Is ThermoSynth free?

ThermoSynth costs $34.99, with no in-app purchases.

### Do PET Bottling or ThermoSynth have ads?

Neither PET Bottling nor ThermoSynth shows ads.

### Which is updated more often, PET Bottling or ThermoSynth?

PET Bottling ships an update every 7 months, and ThermoSynth every 2 months. Most recently, PET Bottling was updated on October 14, 2026 and ThermoSynth on October 6, 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.*