# Physics Formulas vs Bio Lexicon

The clearest difference is in-app purchases: Bio Lexicon at none against Physics Formulas's 2. Physics Formulas's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Physics Formulas sells 2 in-app purchases, starting at $2.99 per 7 days. Bio Lexicon asks for nothing beyond the download.

## The numbers

| Metric | Physics Formulas | Bio Lexicon |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | — |
| Size | 38 MB | 25 MB |
| Requires iOS | **15.1** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mobin Akhter](https://appshunter.io/developer/1812505286) | [Chaleepa Mallawa](https://appshunter.io/developer/1359729160) |

## 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 | $2.99 | per 7 days |
| Lifetime Access | $49.99 | one-time |


### Bio Lexicon

[App page](https://appshunter.io/ios/app/bio-lexicon/id6760580830)

**Features:** macOS Compatibility, 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 Bio Lexicon free?

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

### Do Physics Formulas or Bio Lexicon have ads?

Bio Lexicon shows ads; Physics Formulas does not.

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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.*