# iStopwatch vs 秒杀秒表

The clearest difference is in-app purchases: 秒杀秒表 at none against iStopwatch's 1. 秒杀秒表 also leads on update cadence (daily vs monthly) and iOS requirement (13.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. iStopwatch sells 1 one-off in-app purchase. 秒杀秒表 asks for nothing beyond the download.

iStopwatch ships an update monthly, 秒杀秒表 daily. The most recent releases landed on November 2, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | iStopwatch | 秒杀秒表 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Daily** |
| Size | 9 MB | 32 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [景珂 陈](https://appshunter.io/developer/620312170) | [Shanghai Xinchao Internet Technology Company Limited](https://appshunter.io/developer/1545362307) |

## What reviewers say

### iStopwatch

[App page](https://appshunter.io/ios/app/istopwatch-lcd-timer/id1143929948)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $1.99 | one-time |


### 秒杀秒表

[App page](https://appshunter.io/ios/app/id1596093689)

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

**In-app purchases:** none


## Frequently asked questions

### Is iStopwatch free?

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

### Is 秒杀秒表 free?

秒杀秒表 is free to download, with no in-app purchases.

### Do iStopwatch or 秒杀秒表 have ads?

Both iStopwatch and 秒杀秒表 show ads.

### Which is updated more often, iStopwatch or 秒杀秒表?

iStopwatch ships an update monthly, and 秒杀秒表 daily. Most recently, iStopwatch was updated on November 2, 2026 and 秒杀秒表 on October 25, 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.*