# 时间沙漏：自律专注倒计时 vs Audio Timestamp Marker

The clearest difference is in-app purchases: 时间沙漏：自律专注倒计时 at none against Audio Timestamp Marker's 1. Audio Timestamp Marker's advantage is device support and iOS requirement (14.0 vs 16). On price there is nothing between them.

Both are free to download. Audio Timestamp Marker sells 1 one-off in-app purchase. 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 | Audio Timestamp Marker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 5 weeks |
| Size | 18 MB | 34 MB |
| Requires iOS | 16 | **14.0** |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Shenzhen Duoxiang Technology Co., Ltd](https://appshunter.io/developer/1534573413) | [hiroki kawamura](https://appshunter.io/developer/1613885005) |

## 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


### Audio Timestamp Marker

[App page](https://appshunter.io/ios/app/audio-timestamp-marker/id6787572446)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Lifetime) | $24.99 | 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 Audio Timestamp Marker free?

Audio Timestamp Marker 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.*