# Chemmory vs Start Physics

The clearest difference is in-app purchases: Chemmory at none against Start Physics's 5. Chemmory also leads on iOS requirement (12.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Start Physics sells 5 one-off in-app purchases. Chemmory asks for nothing beyond the download.

## The numbers

| Metric | Chemmory | Start Physics |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 days |
| Size | 134 MB | 30 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Grzegorz Kulesza](https://appshunter.io/developer/1746409831) | [CHUNGKIL KIM](https://appshunter.io/developer/960187999) |

## What reviewers say

### Chemmory

[App page](https://appshunter.io/ios/app/chemmory/id6752790740)

**Features:** macOS Compatibility

**In-app purchases:** none


### Start Physics

[App page](https://appshunter.io/ios/app/start-physics/id6811021850)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support, iPhone Duo support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Middle School Physics | $4.99 | one-time |
| Integrated Science: Physics | $4.99 | one-time |
| Mechanics and Energy | $6.99 | one-time |
| Electromagnetism & Quantum | $6.99 | one-time |
| Physics | $6.99 | one-time |


## Frequently asked questions

### Is Chemmory free?

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

### Is Start Physics free?

Start Physics is free to download, with in-app purchases available.

### Do Chemmory or Start Physics have ads?

Neither Chemmory nor Start Physics shows ads.

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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.*