# Chekit vs Zero

The clearest difference is iOS requirement: Chekit at 9.1 against Zero's 16.0. 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.

## The numbers

| Metric | Chekit | Zero |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Free | — |
| Size | 29 MB | 98 MB |
| Requires iOS | **9.1** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [晓东 林](https://appshunter.io/developer/1274998595) | [行健 赵](https://appshunter.io/developer/1727987356) |

## What reviewers say

### Chekit

[App page](https://appshunter.io/ios/app/chekit-chemistry-kit/id1275846444)

This application simplifies chemistry learning by providing essential tools like a mole calculator, a periodic table, and a valence table. It aims to assist users in solving a wide range of chemistry-related problems.

**Highlights:** Mole calculator, Periodic Table, Valence Table, Chemistry problem solving

**Features:** Vision Pro support

**In-app purchases:** none


### Zero

[App page](https://appshunter.io/ios/app/zero-shot-counting/id6478505632)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chekit free?

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

### Is Zero free?

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

### Do Chekit or Zero have ads?

Neither Chekit nor Zero shows ads.

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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.*