# Molecules AR vs CloudLabs Density of Solids

The clearest difference is price: CloudLabs Density of Solids at Free against Molecules AR's $1.99. CloudLabs Density of Solids also leads on device support (3 vs 1) and iOS requirement (9.0 vs 12.0). On update cadence, ads and in-app purchases there is nothing between them.

CloudLabs Density of Solids is free to download; Molecules AR costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Molecules AR ships an update every 20 months, CloudLabs Density of Solids every 29 months. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Molecules AR | CloudLabs Density of Solids |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 20 months** | Every 29 months |
| Size | 27 MB | 92 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [Jiovany Orozco](https://appshunter.io/developer/1114670847) |

## What reviewers say

### Molecules AR

[App page](https://appshunter.io/ios/app/molecules-ar/id1334256889)

**Features:** macOS Compatibility

**In-app purchases:** none


### CloudLabs Density of Solids

[App page](https://appshunter.io/ios/app/cloudlabs-density-of-solids/id1594450392)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Molecules AR free?

Molecules AR costs $1.99, with no in-app purchases.

### Is CloudLabs Density of Solids free?

CloudLabs Density of Solids is free to download, with no in-app purchases.

### Do Molecules AR or CloudLabs Density of Solids have ads?

Neither Molecules AR nor CloudLabs Density of Solids shows ads.

### Which is updated more often, Molecules AR or CloudLabs Density of Solids?

Molecules AR ships an update every 20 months, and CloudLabs Density of Solids every 29 months. Most recently, Molecules AR was updated on October 26, 2026 and CloudLabs Density of Solids on October 27, 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.*