# Chemistry App vs IGCSE Physics Notes

The clearest difference is in-app purchases: Chemistry App at none against IGCSE Physics Notes's 3. Chemistry App also leads on iOS requirement (15.0 vs 26.4). IGCSE Physics Notes's advantage is update cadence (every 10 days vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. IGCSE Physics Notes sells 3 in-app purchases, starting at $9.99 per month. Chemistry App asks for nothing beyond the download.

Chemistry App ships an update every 4 months, IGCSE Physics Notes every 10 days. Both last shipped on October 5, 2026.

## The numbers

| Metric | Chemistry App | IGCSE Physics Notes |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 10 days** |
| Size | 35 MB | 43 MB |
| Requires iOS | **15.0** | 26.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KheniTech](https://appshunter.io/developer/1580419338) | [Hareendra Dhanushka Bandara Jayasingha Gamage](https://appshunter.io/developer/1718176438) |

## What reviewers say

### Chemistry App

[App page](https://appshunter.io/ios/app/chemistry-app/id6762002269)

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

**In-app purchases:** none


### IGCSE Physics Notes

[App page](https://appshunter.io/ios/app/igcse-physics-notes/id6776675569)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $9.99 | per month |
| 6 Month Premium | $44.99 | per 6 months |
| Annual Premium | $69.99 | per year |


## Frequently asked questions

### Is Chemistry App free?

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

### Is IGCSE Physics Notes free?

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

### Do Chemistry App or IGCSE Physics Notes have ads?

Neither Chemistry App nor IGCSE Physics Notes shows ads.

### Which is updated more often, Chemistry App or IGCSE Physics Notes?

Chemistry App ships an update every 4 months, and IGCSE Physics Notes every 10 days. Most recently, Chemistry App was updated on October 5, 2026 and IGCSE Physics Notes on October 5, 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.*