# CloudLabs Aldehyde Synthesis vs RelativityTheory

The clearest difference is price: CloudLabs Aldehyde Synthesis at Free against RelativityTheory's $0.99. CloudLabs Aldehyde Synthesis also leads on iOS requirement (9.0 vs 14.4). RelativityTheory's advantage is update cadence (every 3 weeks vs every 29 months). On ads, in-app purchases and device support there is nothing between them.

CloudLabs Aldehyde Synthesis is free to download; RelativityTheory costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CloudLabs Aldehyde Synthesis ships an update every 29 months, RelativityTheory every 3 weeks. Both last shipped on November 7, 2026.

## The numbers

| Metric | CloudLabs Aldehyde Synthesis | RelativityTheory |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 29 months | **Every 3 weeks** |
| Size | 82 MB | 6 MB |
| Requires iOS | **9.0** | 14.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jiovany Orozco](https://appshunter.io/developer/1114670847) | [Takao Akatsu](https://appshunter.io/developer/1530946331) |

## What reviewers say

### CloudLabs Aldehyde Synthesis

[App page](https://appshunter.io/ios/app/cloudlabs-aldehyde-synthesis/id1596512819)

**Features:** macOS Compatibility

**In-app purchases:** none


### RelativityTheory

[App page](https://appshunter.io/ios/app/relativitytheory/id1620999874)

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

**In-app purchases:** none


## Frequently asked questions

### Is CloudLabs Aldehyde Synthesis free?

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

### Is RelativityTheory free?

RelativityTheory costs $0.99, with no in-app purchases.

### Do CloudLabs Aldehyde Synthesis or RelativityTheory have ads?

Neither CloudLabs Aldehyde Synthesis nor RelativityTheory shows ads.

### Which is updated more often, CloudLabs Aldehyde Synthesis or RelativityTheory?

CloudLabs Aldehyde Synthesis ships an update every 29 months, and RelativityTheory every 3 weeks. Most recently, CloudLabs Aldehyde Synthesis was updated on November 7, 2026 and RelativityTheory on November 7, 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.*