# K Car vs Water Purifier Diary

The clearest difference is in-app purchases: K Car at none against Water Purifier Diary's 2. K Car also leads on ads (none vs shown) and iOS requirement (11.0 vs 13.0). On price and device support there is nothing between them.

Both are free to download. Water Purifier Diary sells 2 in-app purchases, starting at $0.99 per month. K Car asks for nothing beyond the download.

## The numbers

| Metric | K Car | Water Purifier Diary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 3 weeks |
| Size | 54 MB | 41 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KEX Express (Hong Kong) Limited](https://appshunter.io/developer/1565484104) | [HAO CHANG KUO](https://appshunter.io/developer/1735524069) |

## What reviewers say

### K Car

[App page](https://appshunter.io/ios/app/k-car/id1622356499)

**Features:** macOS Compatibility

**In-app purchases:** none


### Water Purifier Diary

[App page](https://appshunter.io/ios/app/water-purifier-diary/id6761051602)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Monthly) | $0.99 | per month |
| Pro (Yearly) | $8.99 | per year |


## Frequently asked questions

### Is K Car free?

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

### Is Water Purifier Diary free?

Water Purifier Diary is free to download, with in-app purchases available.

### Do K Car or Water Purifier Diary have ads?

Water Purifier Diary shows ads; K Car does not.

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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.*