# Formula Conversion vs Periodic Table All Elements

The clearest difference is in-app purchases: Periodic Table All Elements at none against Formula Conversion's 1. Periodic Table All Elements also leads on update cadence (every 4 days vs every 26 months) and 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 All Elements asks for nothing beyond the download.

Formula Conversion ships an update every 26 months, Periodic Table All Elements every 4 days. The most recent releases landed on September 10, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Formula Conversion | Periodic Table All Elements |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 26 months | **Every 4 days** |
| Size | 2 MB | 35 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) | [Rakesh Tiwari](https://appshunter.io/developer/1465076772) |

## 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 All Elements

[App page](https://appshunter.io/ios/app/periodic-table-all-elements/id6505012573)

**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 All Elements free?

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

### Do Formula Conversion or Periodic Table All Elements have ads?

Periodic Table All Elements shows ads; Formula Conversion does not.

### Which is updated more often, Formula Conversion or Periodic Table All Elements?

Formula Conversion ships an update every 26 months, and Periodic Table All Elements every 4 days. Most recently, Formula Conversion was updated on September 10, 2026 and Periodic Table All Elements on September 15, 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.*