# One Calm vs 可以

The clearest difference is device support: One Calm at 3 against 可以's 1. One Calm also leads on iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases 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 | One Calm | 可以 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 3 months |
| Size | 14 MB | 5 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [潘安 吴](https://appshunter.io/developer/1681541749) | [嘉 米](https://appshunter.io/developer/1490365125) |

## What reviewers say

### One Calm

[App page](https://appshunter.io/ios/app/one-calm/id6447800103)

**Features:** macOS Compatibility

**In-app purchases:** none


### 可以

[App page](https://appshunter.io/ios/app/id6740580030)

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

**In-app purchases:** none


## Frequently asked questions

### Is One Calm free?

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

### Is 可以 free?

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

### Do One Calm or 可以 have ads?

Neither One Calm nor 可以 shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*