# Thermodynamic Cycles vs DriveClass

The clearest difference is in-app purchases: DriveClass at none against Thermodynamic Cycles's 4. DriveClass also leads on update cadence (every 11 days vs every 3 months). Thermodynamic Cycles's advantage is device support (4 vs 1) and iOS requirement (15.0 vs 18). On price and ads there is nothing between them.

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

Thermodynamic Cycles ships an update every 3 months, DriveClass every 11 days. The most recent releases landed on October 4, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Thermodynamic Cycles | DriveClass |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 11 days** |
| Size | 50 MB | 21 MB |
| Requires iOS | **15.0** | 18 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Angus Malcolm](https://appshunter.io/developer/834153229) | [michael brown](https://appshunter.io/developer/1495536155) |

## 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 |


### DriveClass

[App page](https://appshunter.io/ios/app/driveclass/id1495536306)

**In-app purchases:** none


## Frequently asked questions

### Is Thermodynamic Cycles free?

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

### Is DriveClass free?

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

### Do Thermodynamic Cycles or DriveClass have ads?

Neither Thermodynamic Cycles nor DriveClass shows ads.

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

Thermodynamic Cycles ships an update every 3 months, and DriveClass every 11 days. Most recently, Thermodynamic Cycles was updated on October 4, 2026 and DriveClass 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.*