# Periodic table vs (Open Source) Periodic Table

The clearest difference is in-app purchases: (Open Source) Periodic Table at none against Periodic table's 3. (Open Source) Periodic Table also leads on update cadence (fortnightly vs every 2 months). Periodic table's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Periodic table sells 3 in-app purchases, starting at $4.49 per 7 days. (Open Source) Periodic Table asks for nothing beyond the download.

Periodic table ships an update every 2 months, (Open Source) Periodic Table fortnightly. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Periodic table | (Open Source) Periodic Table |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 34 MB | 47 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mobin Akhter](https://appshunter.io/developer/1812505286) | [AHMET EMRE DEDELER](https://appshunter.io/developer/1870913629) |

## What reviewers say

### Periodic table

[App page](https://appshunter.io/ios/app/periodic-table-chem/id6757834353)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.49 | per 7 days |
| Yearly | $34.99 | per year |
| Lifetime Access | $64.99 | one-time |


### (Open Source) Periodic Table

[App page](https://appshunter.io/ios/app/open-source-periodic-table/id6781818611)

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

**In-app purchases:** none


## Frequently asked questions

### Is Periodic table free?

Periodic table is free to download, with in-app purchases available.

### Is (Open Source) Periodic Table free?

(Open Source) Periodic Table is free to download, with no in-app purchases.

### Do Periodic table or (Open Source) Periodic Table have ads?

Neither Periodic table nor (Open Source) Periodic Table shows ads.

### Which is updated more often, Periodic table or (Open Source) Periodic Table?

Periodic table ships an update every 2 months, and (Open Source) Periodic Table fortnightly. Most recently, Periodic table was updated on October 28, 2026 and (Open Source) Periodic Table on October 25, 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.*