# Thermochemistry vs CloudLabs pH

The clearest difference is price: CloudLabs pH at Free against Thermochemistry's $3.99. CloudLabs pH also leads on iOS requirement (9.0 vs 17.0). Thermochemistry's advantage is update cadence (every 4 months vs every 29 months). On ads, in-app purchases and device support there is nothing between them.

CloudLabs pH is free to download; Thermochemistry costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Thermochemistry ships an update every 4 months, CloudLabs pH every 29 months. The most recent releases landed on September 22, 2026 and December 6, 2025 respectively.

## The numbers

| Metric | Thermochemistry | CloudLabs pH |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 29 months |
| Size | 1 MB | 87 MB |
| Requires iOS | 17.0 | **9.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Roman Volinsky](https://appshunter.io/developer/977951850) | [Jiovany Orozco](https://appshunter.io/developer/1114670847) |

## What reviewers say

### Thermochemistry

[App page](https://appshunter.io/ios/app/thermochemistry/id1095024444)

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

**In-app purchases:** none


### CloudLabs pH

[App page](https://appshunter.io/ios/app/cloudlabs-ph/id1596370908)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Thermochemistry free?

Thermochemistry costs $3.99, with no in-app purchases.

### Is CloudLabs pH free?

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

### Do Thermochemistry or CloudLabs pH have ads?

Neither Thermochemistry nor CloudLabs pH shows ads.

### Which is updated more often, Thermochemistry or CloudLabs pH?

Thermochemistry ships an update every 4 months, and CloudLabs pH every 29 months. Most recently, Thermochemistry was updated on September 22, 2026 and CloudLabs pH on December 6, 2025.

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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.*