# 控时 vs 极省商家版

The clearest difference is in-app purchases: 极省商家版 at none against 控时's 1. 控时's advantage is update cadence (every 2 weeks vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 控时 sells 1 one-off in-app purchase. 极省商家版 asks for nothing beyond the download.

控时 ships an update every 2 weeks, 极省商家版 monthly. Both last shipped on November 3, 2026.

## The numbers

| Metric | 控时 | 极省商家版 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (15 ratings)](https://appshunter.io/ios/app/id1536264654/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 23 MB | 90 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [文雪 程](https://appshunter.io/developer/1533529523) | [Chongqing Zhijing Technology Co., Ltd](https://appshunter.io/developer/1517539321) |

## What reviewers say

### 控时

[App page](https://appshunter.io/ios/app/id1536264654)

This utility app offers a floating clock that can be displayed over any other application interface. It provides precise timing with manual millisecond calibration and can also be used for event reminders.

**Highlights:** Desktop floating clock, Overlay on any app, Precise timing, Millisecond calibration, Event reminders

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 付费去广告 | $1.99 | one-time |


### 极省商家版

[App page](https://appshunter.io/ios/app/id1665620879)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 控时 free?

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

### Is 极省商家版 free?

极省商家版 is free to download, with no in-app purchases.

### Do 控时 or 极省商家版 have ads?

Both 控时 and 极省商家版 show ads.

### Which is updated more often, 控时 or 极省商家版?

控时 ships an update every 2 weeks, and 极省商家版 monthly. Most recently, 控时 was updated on November 3, 2026 and 极省商家版 on November 3, 2026.

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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.*