# 开水壶 vs 氪心

The clearest difference is device support: 开水壶 at 2 against 氪心's —. 氪心's advantage is iOS requirement (12.0 vs 15). On price and in-app purchases there is nothing between them.

Both are free to download. 开水壶 sells 8 one-off in-app purchases and 氪心 sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | 开水壶 | 氪心 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | — |
| Update frequency | Fortnightly | — |
| Size | 371 MB | 298 MB |
| Requires iOS | 15 | **12.0** |
| Devices | **iPhone, iPod** | — |
| Age rating | 17+ | 17+ |
| Developer | [中道新职坊科技发展有限公司](https://appshunter.io/developer/1533388519) | [Shanghai Keyue Technology Co., Ltd.](https://appshunter.io/developer/1728006042) |

## What reviewers say

### 开水壶

[App page](https://appshunter.io/ios/app/id1533388517)

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 溜溜币70个 | $0.99 | one-time |
| 溜溜币126个 | $2.99 | one-time |
| 溜溜币350个 | $6.99 | one-time |
| 溜溜币896个 | $19.99 | one-time |
| 溜溜币3626个 | $69.99 | one-time |
| 溜溜币9086个 | $199.99 | one-time |
| 溜溜币16086 | $349.99 | one-time |
| 溜溜币20986个 | $399.99 | one-time |


### 氪心

[App page](https://appshunter.io/ios/app/id6476860573)

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 150金币 | $19.99 | one-time |
| 250金币 | $34.99 | one-time |
| 300金币 | $39.99 | one-time |
| 350金币 | $49.99 | one-time |
| 450金币 | $59.99 | one-time |
| 400金币 | $59.99 | one-time |
| 598金币 | $89.99 | one-time |
| 698金币 | $99.99 | one-time |
| 798金币 | $99.99 | one-time |
| 898金币 | $129.99 | one-time |


## Frequently asked questions

### Is 开水壶 free?

开水壶 is free to download, with in-app purchases available.

### Is 氪心 free?

氪心 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.*