# NanoStopWatch byNSDev vs ChronStop

The clearest difference is iOS requirement: NanoStopWatch byNSDev at 17 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 | NanoStopWatch byNSDev | ChronStop |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 2 MB | 9 MB |
| Requires iOS | **17** | 26.5 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [NIHON SYSTEM DEVELOPER CORPORATION](https://appshunter.io/developer/1198103734) | [Jeff Garvens](https://appshunter.io/developer/1239667481) |

## What reviewers say

### NanoStopWatch byNSDev

[App page](https://appshunter.io/ios/app/nanostopwatch-bynsdev/id6748882505)

**Features:** macOS Compatibility

**In-app purchases:** none


### ChronStop

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

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

**In-app purchases:** none


## Frequently asked questions

### Is NanoStopWatch byNSDev free?

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

### Is ChronStop free?

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

### Do NanoStopWatch byNSDev or ChronStop have ads?

Neither NanoStopWatch byNSDev nor ChronStop 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.*