# Formula Conversion vs Periodic Table Advanced

The clearest difference is in-app purchases: Periodic Table Advanced at none against Formula Conversion's 1. Periodic Table Advanced also leads on iOS requirement (12.0 vs 14.1). Formula Conversion's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Formula Conversion sells 1 one-off in-app purchase. Periodic Table Advanced asks for nothing beyond the download.

## The numbers

| Metric | Formula Conversion | Periodic Table Advanced |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 26 months | — |
| Size | 2 MB | 47 MB |
| Requires iOS | 14.1 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Janek Soomets](https://appshunter.io/developer/1315295062) | [Duc Hung Le](https://appshunter.io/developer/1590124314) |

## What reviewers say

### Formula Conversion

[App page](https://appshunter.io/ios/app/formula-conversion/id1586539965)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade Formula Conversion | $3.99 | one-time |


### Periodic Table Advanced

[App page](https://appshunter.io/ios/app/periodic-table-advanced/id6741031597)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Formula Conversion free?

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

### Is Periodic Table Advanced free?

Periodic Table Advanced is free to download, with no in-app purchases.

### Do Formula Conversion or Periodic Table Advanced have ads?

Periodic Table Advanced shows ads; Formula Conversion 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.*