# ThermVoltGe vs Harmonitron

The clearest difference is price: ThermVoltGe at Free against Harmonitron's $2.99. Harmonitron's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

ThermVoltGe is free to download; Harmonitron costs $2.99 up front. ThermVoltGe sells 1 one-off in-app purchase. Harmonitron asks for nothing beyond the download.

## The numbers

| Metric | ThermVoltGe | Harmonitron |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/harmonitron/id6790326853/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | — | Paid |
| Size | 28 MB | 3 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shoma Kondo](https://appshunter.io/developer/1884832972) | [Konstantin Torsten Schutz](https://appshunter.io/developer/6778600016) |

## What reviewers say

### ThermVoltGe

[App page](https://appshunter.io/ios/app/thermvoltge/id6774421537)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ThermVoltGe Full Version | $4.99 | one-time |


### Harmonitron

[App page](https://appshunter.io/ios/app/harmonitron/id6790326853)

This app creates a rich, swirling harmonic tremolo effect, distinct from standard volume pulsing. It splits sound into low and high bands, modulating them in opposite phases for a lush, phaser-like character. Apply it to various instruments or full mixes as a standalone app or AUv3 effect.

**Highlights:** True harmonic tremolo with anti-phase modulation, Voice control for morphing between classic and harmonic tremolo, Split & Tilt for band crossover and balance, Tube Drive and tone shaping, Adjustable Rate and LFO Shapes, Tempo Sync with musical note divisions, Stereo Spread for auto-pan and width

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

**In-app purchases:** none


## Frequently asked questions

### Is ThermVoltGe free?

ThermVoltGe is free to download, with in-app purchases available.

### Is Harmonitron free?

Harmonitron costs $2.99, with no in-app purchases.

### Do ThermVoltGe or Harmonitron have ads?

Neither ThermVoltGe nor Harmonitron shows ads.

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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.*