# 时间沙漏：自律专注倒计时 vs Next Streak

The clearest difference is in-app purchases: 时间沙漏：自律专注倒计时 at none against Next Streak's 3. Next Streak's advantage is device support. On price and iOS requirement there is nothing between them.

Both are free to download. Next Streak sells 3 in-app purchases, starting at $2.99 per month. 时间沙漏：自律专注倒计时 asks for nothing beyond the download.

## The numbers

| Metric | 时间沙漏：自律专注倒计时 | Next Streak |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 6 days |
| Size | 18 MB | 100 MB |
| Requires iOS | 16 | **15.1** |
| Devices | — | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Shenzhen Duoxiang Technology Co., Ltd](https://appshunter.io/developer/1534573413) | [Innovius](https://appshunter.io/developer/1821041028) |

## What reviewers say

### 时间沙漏：自律专注倒计时

[App page](https://appshunter.io/ios/app/id6747423701)

**In-app purchases:** none


### Next Streak

[App page](https://appshunter.io/ios/app/next-streak-adhd-next-step/id6761323767)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NextStreak Pro | $2.99 | per month |
| NextStreak Pro | $24.99 | per year |
| NextStreak Pro | $39.99 | one-time |


## Frequently asked questions

### Is 时间沙漏：自律专注倒计时 free?

时间沙漏：自律专注倒计时 is free to download, with no in-app purchases.

### Is Next Streak free?

Next Streak 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.*