# Physics Formulas vs Грамота

The clearest difference is in-app purchases: Грамота at none against Physics Formulas's 2. Грамота also leads on update cadence (every 8 days vs every 2 months). Physics Formulas's advantage is iOS requirement (15.1 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Physics Formulas sells 2 in-app purchases, starting at $3.99 per 7 days. Грамота asks for nothing beyond the download.

Physics Formulas ships an update every 2 months, Грамота every 8 days. The most recent releases landed on October 20, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Physics Formulas | Грамота |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 8 days** |
| Size | 38 MB | 1.2 GB |
| Requires iOS | **15.1** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Mobin Akhter](https://appshunter.io/developer/1812505286) | [Andrey Troegubov](https://appshunter.io/developer/1882763959) |

## What reviewers say

### Physics Formulas

[App page](https://appshunter.io/ios/app/physics-formulas-physref/id6757826240)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $3.99 | per 7 days |
| Lifetime Access | $49.99 | one-time |


### Грамота

[App page](https://appshunter.io/ios/app/id6781083979)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Physics Formulas free?

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

### Is Грамота free?

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

### Do Physics Formulas or Грамота have ads?

Neither Physics Formulas nor Грамота shows ads.

### Which is updated more often, Physics Formulas or Грамота?

Physics Formulas ships an update every 2 months, and Грамота every 8 days. Most recently, Physics Formulas was updated on October 20, 2026 and Грамота on October 18, 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.*