# physics vs Lashyn

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

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

physics ships an update every 19 months, Lashyn every 2 weeks. The most recent releases landed on September 28, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | physics | Lashyn |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 19 months | **Every 2 weeks** |
| Size | 31 MB | 82 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Ruslan Ilisbekov](https://appshunter.io/developer/1581051885) | [Daniyar Mukhtarov](https://appshunter.io/developer/1884794927) |

## What reviewers say

### physics

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

**In-app purchases:** none


### Lashyn

[App page](https://appshunter.io/ios/app/lashyn/id6538728626)

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

**In-app purchases:** none


## Frequently asked questions

### Is physics free?

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

### Is Lashyn free?

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

### Do physics or Lashyn have ads?

Lashyn shows ads; physics does not.

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

physics ships an update every 19 months, and Lashyn every 2 weeks. Most recently, physics was updated on September 28, 2026 and Lashyn on October 7, 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.*