# Physics App vs Study Key

The clearest difference is update cadence: Physics App at every 5 days against Study Key's every 3 weeks. Physics App also leads on iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Physics App ships an update every 5 days, Study Key every 3 weeks. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Physics App | Study Key |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/physics-app/id1533916288/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 6 MB | 20 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sze Ho Ng](https://appshunter.io/developer/1238639592) | [LEAN TRANSITION SOLUTIONS LIMITED](https://appshunter.io/developer/1071218576) |

## What reviewers say

### Physics App

[App page](https://appshunter.io/ios/app/physics-app/id1533916288)

This application provides students with multiple-choice exercises to test their physics knowledge. It offers performance statistics to help users track their progress and identify areas for improvement.

**Highlights:** Multiple-choice exercises, Performance statistics, Self-evaluation tools, Progress tracking

**Features:** macOS Compatibility

**In-app purchases:** none


### Study Key

[App page](https://appshunter.io/ios/app/study-key/id1634610509)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Physics App free?

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

### Is Study Key free?

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

### Do Physics App or Study Key have ads?

Neither Physics App nor Study Key shows ads.

### Which is updated more often, Physics App or Study Key?

Physics App ships an update every 5 days, and Study Key every 3 weeks. Most recently, Physics App was updated on October 7, 2026 and Study Key on October 11, 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.*