# Chekit vs Cost自动记账

The clearest difference is in-app purchases: Chekit at none against Cost自动记账's 3. Chekit also leads on iOS requirement (9.1 vs 15.5). Cost自动记账's advantage is update cadence (every 3 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. Cost自动记账 sells 3 in-app purchases, starting at $0.99 per month. Chekit asks for nothing beyond the download.

Chekit ships an update monthly, Cost自动记账 every 3 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Chekit | Cost自动记账 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Free | — |
| Size | 29 MB | 105 MB |
| Requires iOS | **9.1** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [晓东 林](https://appshunter.io/developer/1274998595) | [Hefei Today Yi Xiu Technology Co., Ltd](https://appshunter.io/developer/6782234075) |

## 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


### Cost自动记账

[App page](https://appshunter.io/ios/app/cost/id6787337713)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $0.99 | per month |
| Pro Yearly | $4.99 | per year |
| Lifetime Membership | $9.99 | one-time |


## Frequently asked questions

### Is Chekit free?

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

### Is Cost自动记账 free?

Cost自动记账 is free to download, with in-app purchases available.

### Do Chekit or Cost自动记账 have ads?

Neither Chekit nor Cost自动记账 shows ads.

### Which is updated more often, Chekit or Cost自动记账?

Chekit ships an update monthly, and Cost自动记账 every 3 days. Most recently, Chekit was updated on October 25, 2026 and Cost自动记账 on October 24, 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.*