# Thermodynamic Cycles vs GlobalUV

The clearest difference is in-app purchases: GlobalUV at none against Thermodynamic Cycles's 4. GlobalUV also leads on iOS requirement (13 vs 15.0). Thermodynamic Cycles's advantage is device support (4 vs 2). On price, update cadence and ads there is nothing between them.

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

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 26, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Thermodynamic Cycles | GlobalUV |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (4 ratings)](https://appshunter.io/ios/app/globaluv/id1112396623/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | — | Free |
| Size | 50 MB | 49 MB |
| Requires iOS | 15.0 | **13** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Angus Malcolm](https://appshunter.io/developer/834153229) | [Jeremy Burke](https://appshunter.io/developer/1074125212) |

## 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 |


### GlobalUV

[App page](https://appshunter.io/ios/app/globaluv/id1112396623)

Provides estimates of the current UV Index (UVI) for any location globally. It details how UVI levels are expected to change throughout the day, helping users understand UV radiation exposure and its health implications.

**Highlights:** Global UVI level display, Current UVI estimates, Daily UVI variation forecast, Location-based UVI data, Information on UV radiation health risks

**In-app purchases:** none


## Frequently asked questions

### Is Thermodynamic Cycles free?

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

### Is GlobalUV free?

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

### Do Thermodynamic Cycles or GlobalUV have ads?

Neither Thermodynamic Cycles nor GlobalUV shows ads.

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

Thermodynamic Cycles ships an update every 3 months, and GlobalUV every 3 months. Most recently, Thermodynamic Cycles was updated on October 26, 2026 and GlobalUV on November 2, 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.*