PET Bottling vs ThermoSynth
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PET Bottling
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.
- 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
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PET Bottling is a real percussion instrument using the PET bottle. You can play an acoustic instrument as like real PET bottle. And you can play 624 each sounds recorded from only one PET bottle. If you are professional, you can play on live performance stage or use at recording studio. If you are beginner, you are amazed to hear various sounds by tapping! If you use some techniques, you can show a unique performance that goes beyond the real bottle. And you can keep your sound forever by recording function. Also you can use music you have played on PET Bottling for your song. Please check 1minute Introduction movie. https://youtu.be/XPMrgQg02mY Water in the bottle or not. Only tap or tap & stay(mute). About these each MODE, you can select Tapping Object - tapping by Hand, tapping by Nail, attacking on Wood, attacking on Plastic, attacking on Metal. And about these all, Sounds are changed by tapping place on screen... Cap, Upper, Middle, Lower, Bottom. And if you tap upper place on screen, you can play big tapping tone. And more you can play following option sounds. Falling cap sound, mute noise by hand, soda bubble noise, opening or closing cap sound, pinch the bottle, knocking up or down sound, rubbing up or down sound. If you select Water MODE and tilt left, right, upper or lower, you can play various water noise. If PET Bottling is frontmost app, you can avoid auto sleep. It's very useful for playing only a part of long music. All sounds are quickly played and you can watch feedback image on the screen so you can feel real playing. I believe all people fun playing this real instrument! And recording function is very easy. Just tap ” i ” button to show. Tap Red button to record and tap Blue button to play. PET Bottling doesn’t mute background app’s sound from the beginning. Therefore, you can record while listening to the song you are making. You can pass the wav file you recorded to your favorite storage or app with Export button. Importing your performance to music production app. Passing it to someone. A generic wav file will never be lost in the future. Just you have to avoid tapping ” i ” button when playing. Really you can focus on your performance. Are you ready? Let’s play wonderful music! - Feature - • Super high quality recorded & edited 24-bit sounds. • Modern 32-bit float Sound Engine. • 624 various & rich tones. • Very quickly response for playing as real percussion. • Visible feedback for feeling of tapping. • Institutive & smooth user interface. • Avoid auto sleep even if you don't touch. • Don’t stop background app’s sound. • Excellent recording function that is simple and does not disturb your play.
ThermoSynth
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.
- 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
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Welcome to the politics of sound ! ThermoSynth is a self regulating hyper oscillator engine inspired by thermodynamic systems. ThermoSynth extends the classical oscillator concept, it is a generative synthesizer at the waveform level, which does not express only static / interference waveforms but also an evolution of a sonic structure by internal communication and its actions inside certain controllable margins. The oscillator of ThermoSynth establishes its own engine environment and begin its signal path with a waveform generator ( pure mathematical, not samples nor optimized tables ) rendering basic waveforms and capable of morphing in between. The 4 oscillators of the Thermo are in continuous interaction sending each other their signals thanks to a 4X4 feedback matrix. Many type of changes in this system are introduced by the stochastic modulators which sonicLAB is known for and also by the user through some perturbations called the injections into the system. Each oscillator engine continuously checks its environment conditions and takes decisions, “self regulates”, in reaction to these changes applied. The result is unique never ending and never repeating drone synthesis, pure organic textures for electronic music; and hours can easily pass with experimenting on ThermoSynth. Detailed app description can be found at https://www.sonic-lab.com/thermo/ And you can download the manual here : https://www.sonic-lab.com/Thermo/Thermo-iOS_manual.pdf ThermoSynth is identical to the desktop sonicLAB Thermo version. For external control, it comes with MPE support and sonicLAB high resolution rotary encoder midi mapping feature as on the desktop version.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | PET Bottling | ThermoSynth |
|---|---|---|
| Price | $2.99 — better | $34.99 |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 7 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad — better | iPad |
| Requires iOS | 18.1 | 9.3 — better |
| Further details — not scored | ||
| Size | 73 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Hidenori Matsuoka | SonicPlanet Audio Video Teknolojileri Anonim Sti. |
Customer experience
PET Bottling
ThermoSynth
In-app purchases
PET Bottling
No in-app purchases
ThermoSynth
No in-app purchases









