# physics vs Unai

The clearest difference is in-app purchases: physics at none against Unai's 2. Unai's advantage is update cadence (every 2 weeks vs every 19 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Unai sells 2 in-app purchases, starting at $0.99 per month. physics asks for nothing beyond the download.

physics ships an update every 19 months, Unai every 2 weeks. The most recent releases landed on September 28, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | physics | Unai |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 2 weeks** |
| Size | 31 MB | 56 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Ruslan Ilisbekov](https://appshunter.io/developer/1581051885) | [Imashev Adilet](https://appshunter.io/developer/1705667929) |

## What reviewers say

### physics

[App page](https://appshunter.io/ios/app/physics-school/id1641054910)

**In-app purchases:** none


### Unai

[App page](https://appshunter.io/ios/app/unai/id6448504835)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ежемесячно | $0.99 | per month |
| Ежегодно | $7.99 | per year |


## Frequently asked questions

### Is physics free?

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

### Is Unai free?

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

### Do physics or Unai have ads?

Neither physics nor Unai shows ads.

### Which is updated more often, physics or Unai?

physics ships an update every 19 months, and Unai every 2 weeks. Most recently, physics was updated on September 28, 2026 and Unai on September 29, 2026.

---

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