# Physics Playgrounds vs Start Physics

The clearest difference is in-app purchases: Physics Playgrounds at none against Start Physics's 5. Physics Playgrounds also leads on iOS requirement (15.0 vs 18.0). Start Physics's advantage is update cadence (every 2 days vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Start Physics sells 5 one-off in-app purchases. Physics Playgrounds asks for nothing beyond the download.

Physics Playgrounds ships an update every 3 months, Start Physics every 2 days. The most recent releases landed on November 9, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | Physics Playgrounds | Start Physics |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Size | 37 MB | 30 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [KheniTech](https://appshunter.io/developer/1580419338) | [CHUNGKIL KIM](https://appshunter.io/developer/960187999) |

## What reviewers say

### Physics Playgrounds

[App page](https://appshunter.io/ios/app/physics-playgrounds/id6761057955)

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

**In-app purchases:** none


### Start Physics

[App page](https://appshunter.io/ios/app/start-physics/id6811021850)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support, iPhone Duo support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Middle School Physics | $4.99 | one-time |
| Integrated Science: Physics | $4.99 | one-time |
| Mechanics and Energy | $6.99 | one-time |
| Electromagnetism & Quantum | $6.99 | one-time |
| Physics | $6.99 | one-time |


## Frequently asked questions

### Is Physics Playgrounds free?

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

### Is Start Physics free?

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

### Do Physics Playgrounds or Start Physics have ads?

Neither Physics Playgrounds nor Start Physics shows ads.

### Which is updated more often, Physics Playgrounds or Start Physics?

Physics Playgrounds ships an update every 3 months, and Start Physics every 2 days. Most recently, Physics Playgrounds was updated on November 9, 2026 and Start Physics on November 13, 2026.

---

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