# Thermodynamic Cycles vs Trilhar

The clearest difference is in-app purchases: Trilhar at none against Thermodynamic Cycles's 4. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Thermodynamic Cycles sells 4 one-off in-app purchases. Trilhar asks for nothing beyond the download.

Thermodynamic Cycles ships an update every 3 months, Trilhar every 2 months. The most recent releases landed on November 11, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Thermodynamic Cycles | Trilhar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 50 MB | 52 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | +12 |
| Developer | [Angus Malcolm](https://appshunter.io/developer/834153229) | [Senior Sistemas S/A](https://appshunter.io/developer/551710998) |

## What reviewers say

### Thermodynamic Cycles

[App page](https://appshunter.io/ios/app/thermodynamic-cycles/id834153226)

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gas Power Cycles | $0.49 | one-time |
| Refrigeration Cycles | $0.49 | one-time |
| Vapor Power Cycles | $0.49 | one-time |
| Unlock All | $0.99 | one-time |


### Trilhar

[App page](https://appshunter.io/ios/app/trilhar/id6768678968)

**In-app purchases:** none


## Frequently asked questions

### Is Thermodynamic Cycles free?

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

### Is Trilhar free?

Trilhar is free to download, with no in-app purchases.

### Do Thermodynamic Cycles or Trilhar have ads?

Neither Thermodynamic Cycles nor Trilhar shows ads.

### Which is updated more often, Thermodynamic Cycles or Trilhar?

Thermodynamic Cycles ships an update every 3 months, and Trilhar every 2 months. Most recently, Thermodynamic Cycles was updated on November 11, 2026 and Trilhar on October 28, 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.*