# Phys 2 vs Chem Formula Sheet by CS team

The clearest difference is in-app purchases: Phys 2 at none against Chem Formula Sheet by CS team's 1. Phys 2 also leads on ads (none vs shown) and update cadence (every 2 months vs every 6 months). On price there is nothing between them.

Both are free to download. Chem Formula Sheet by CS team sells 1 one-off in-app purchase. Phys 2 asks for nothing beyond the download.

Phys 2 ships an update every 2 months, Chem Formula Sheet by CS team every 6 months. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Phys 2 | Chem Formula Sheet by CS team |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 6 months |
| Size | 557 MB | 11 MB |
| Requires iOS | **9.0** | 18.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [Geoffrey Musick](https://appshunter.io/developer/1249860977) | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) |

## What reviewers say

### Phys 2

[App page](https://appshunter.io/ios/app/phys-2/id1351850256)

**Features:** macOS Compatibility

**In-app purchases:** none


### Chem Formula Sheet by CS team

[App page](https://appshunter.io/ios/app/chem-formula-sheet-by-cs-team/id6753220949)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Feature | $1.99 | one-time |


## Frequently asked questions

### Is Phys 2 free?

Phys 2 is free to download, with no in-app purchases.

### Is Chem Formula Sheet by CS team free?

Chem Formula Sheet by CS team is free to download, with in-app purchases available.

### Do Phys 2 or Chem Formula Sheet by CS team have ads?

Chem Formula Sheet by CS team shows ads; Phys 2 does not.

### Which is updated more often, Phys 2 or Chem Formula Sheet by CS team?

Phys 2 ships an update every 2 months, and Chem Formula Sheet by CS team every 6 months. Most recently, Phys 2 was updated on October 6, 2026 and Chem Formula Sheet by CS team on October 24, 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.*