# Periodic vs Saint International School

The clearest difference is ads: Saint International School at none against Periodic's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Periodic ships an update every 5 weeks, Saint International School monthly. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Periodic | Saint International School |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Monthly** |
| Size | 35 MB | 48 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) | [GOVINDARAJ SELVAM](https://appshunter.io/developer/1527108718) |

## What reviewers say

### Periodic

[App page](https://appshunter.io/ios/app/periodic-table-elements/id1628647298)

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

**In-app purchases:** none


### Saint International School

[App page](https://appshunter.io/ios/app/saint-international-school/id1636656997)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Periodic free?

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

### Is Saint International School free?

Saint International School is free to download, with no in-app purchases.

### Do Periodic or Saint International School have ads?

Periodic shows ads; Saint International School does not.

### Which is updated more often, Periodic or Saint International School?

Periodic ships an update every 5 weeks, and Saint International School monthly. Most recently, Periodic was updated on October 12, 2026 and Saint International School on October 7, 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.*