# CSN Quiz vs Periodic Table

The clearest difference is update cadence: Periodic Table at every 4 days against CSN Quiz's every 12 months. CSN Quiz's advantage is iOS requirement (9.0 vs 15.0). On price, ads, 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.

CSN Quiz ships an update every 12 months, Periodic Table every 4 days. The most recent releases landed on October 9, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | CSN Quiz | Periodic Table |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 4 days** |
| Size | 162 MB | 21 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CONSEJO DE SEGURIDAD NUCLEAR](https://appshunter.io/developer/998296503) | [Oleg Korunov](https://appshunter.io/developer/6811071409) |

## What reviewers say

### CSN Quiz

[App page](https://appshunter.io/ios/app/csn-quiz/id1354956272)

**Features:** macOS Compatibility

**In-app purchases:** none


### Periodic Table

[App page](https://appshunter.io/ios/app/periodic-table-118-elements/id6811071407)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CSN Quiz free?

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

### Is Periodic Table free?

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

### Do CSN Quiz or Periodic Table have ads?

Neither CSN Quiz nor Periodic Table shows ads.

### Which is updated more often, CSN Quiz or Periodic Table?

CSN Quiz ships an update every 12 months, and Periodic Table every 4 days. Most recently, CSN Quiz was updated on October 9, 2026 and Periodic Table on October 4, 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.*