# ChronStop vs Underwater Stopwatch

The clearest difference is iOS requirement: Underwater Stopwatch at 18.0 against ChronStop's 26.5. On price, ads, in-app purchases and device support 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 | ChronStop | Underwater Stopwatch |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 3 days |
| Size | 9 MB | 4 MB |
| Requires iOS | 26.5 | **18.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Jeff Garvens](https://appshunter.io/developer/1239667481) | [Vlad Topala](https://appshunter.io/developer/6783263834) |

## What reviewers say

### ChronStop

[App page](https://appshunter.io/ios/app/chronstop/id6781147807)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Underwater Stopwatch

[App page](https://appshunter.io/ios/app/underwater-stopwatch/id6783263832)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ChronStop free?

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

### Is Underwater Stopwatch free?

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

### Do ChronStop or Underwater Stopwatch have ads?

Neither ChronStop nor Underwater Stopwatch shows ads.

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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.*