# Baselproblem vs Physics Formula Library by CS

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

Both are free to download. Physics Formula Library by CS sells 1 one-off in-app purchase. Baselproblem asks for nothing beyond the download.

Baselproblem ships an update every 11 months, Physics Formula Library by CS every 6 months. The most recent releases landed on September 29, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Baselproblem | Physics Formula Library by CS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Every 6 months** |
| Size | 0 MB | 10 MB |
| Requires iOS | **15.0** | 18.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Andreas Horvath](https://appshunter.io/developer/1484572340) | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) |

## What reviewers say

### Baselproblem

[App page](https://appshunter.io/ios/app/baselproblem/id1484572342)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Baselproblem free?

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

### Is Physics Formula Library by CS free?

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

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

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

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

Baselproblem ships an update every 11 months, and Physics Formula Library by CS every 6 months. Most recently, Baselproblem was updated on September 29, 2026 and Physics Formula Library by CS on October 14, 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.*