# Physics Formula Library by CS vs Physics Formulas

The clearest difference is ads: Physics Formulas at none against Physics Formula Library by CS's shown. Physics Formulas also leads on update cadence (every 2 months vs every 6 months) and device support (3 vs 1). On price and in-app purchases there is nothing between them.

Both are free to download. Physics Formula Library by CS sells 1 one-off in-app purchase and Physics Formulas sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Physics Formula Library by CS ships an update every 6 months, Physics Formulas every 2 months. The most recent releases landed on September 10, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Physics Formula Library by CS | Physics Formulas |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 2 months** |
| Size | 10 MB | 38 MB |
| Requires iOS | 18.4 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) | [Mobin Akhter](https://appshunter.io/developer/1812505286) |

## What reviewers say

### Physics Formula Library by CS

[App page](https://appshunter.io/ios/app/physics-formula-library-by-cs/id6752376666)

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

**In-app purchases (1)**

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


### Physics Formulas

[App page](https://appshunter.io/ios/app/physics-formulas-physref/id6757826240)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $2.99 | per 7 days |
| Lifetime Access | $49.99 | one-time |


## Frequently asked questions

### Is Physics Formula Library by CS free?

Physics Formula Library by CS is free to download, with in-app purchases available.

### Is Physics Formulas free?

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

### Do Physics Formula Library by CS or Physics Formulas have ads?

Physics Formula Library by CS shows ads; Physics Formulas does not.

### Which is updated more often, Physics Formula Library by CS or Physics Formulas?

Physics Formula Library by CS ships an update every 6 months, and Physics Formulas every 2 months. Most recently, Physics Formula Library by CS was updated on September 10, 2026 and Physics Formulas on September 11, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*