# Читай Чат vs Periodic Table

The clearest difference is in-app purchases: Читай Чат at none against Periodic Table's 2. Читай Чат also leads on iOS requirement (12.0 vs 17.0). Periodic Table's advantage is device support. On price there is nothing between them.

Both are free to download. Periodic Table sells 2 one-off in-app purchases. Читай Чат asks for nothing beyond the download.

## The numbers

| Metric | Читай Чат | Periodic Table |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/periodic-table-elements-lab/id6780071541/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 8 days |
| Monetization | — | Free |
| Size | 201 MB | 144 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | — | **iPhone, iPad, Mac** |
| Age rating | 12+ | 4+ |
| Developer | [BOGG.ART, OOO](https://appshunter.io/developer/1747203732) | [Rizk Corsight, LLC](https://appshunter.io/developer/1896065289) |

## What reviewers say

### Читай Чат

[App page](https://appshunter.io/ios/app/id6502884537)

**In-app purchases:** none


### Periodic Table

[App page](https://appshunter.io/ios/app/periodic-table-elements-lab/id6780071541)

Explore all 118 elements with detailed data, original illustrations, and a spaced-repetition study system. Features include a guided equation balancer, 3D atom view, and molar-mass calculator. This private app works offline and is designed for effective learning.

**Highlights:** All 118 elements with original illustrations, Spaced-repetition study system, Guided equation balancer, 3D atom view, Molar-mass calculator, Offline functionality, Curriculum packs for AP, IB, A-Level, GCSE, MCAT

**Features:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3-Day Trial | Free | one-time |
| Full Access Unlock | $4.99 | one-time |


## Frequently asked questions

### Is Читай Чат free?

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

### Is Periodic Table free?

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

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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.*