# NanoStopWatch byNSDev vs Atomic Exact Time

The clearest difference is in-app purchases: NanoStopWatch byNSDev at none against Atomic Exact Time's 3. NanoStopWatch byNSDev also leads on ads (none vs shown). Atomic Exact Time's advantage is device support (4 vs 2). On price and iOS requirement there is nothing between them.

Both are free to download. Atomic Exact Time sells 3 in-app purchases, starting at $2.99 per month. NanoStopWatch byNSDev asks for nothing beyond the download.

## The numbers

| Metric | NanoStopWatch byNSDev | Atomic Exact Time |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/atomic-exact-time/id6797418012/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 5 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 2 MB | 56 MB |
| Requires iOS | 17 | **16.4** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac, Apple TV** |
| Age rating | 17+ | 4+ |
| Developer | [NIHON SYSTEM DEVELOPER CORPORATION](https://appshunter.io/developer/1198103734) | [SUPER KIM KIMYA VE TEKSTIL SANAYI TICARET LIMITED SIRKETI](https://appshunter.io/developer/1896542696) |

## What reviewers say

### NanoStopWatch byNSDev

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Atomic Exact Time

[App page](https://appshunter.io/ios/app/atomic-exact-time/id6797418012)

Synchronize your device's clock with network time sources, view its offset, and use a corrected display. Features include countdown timers, team targets, and world clocks. Optional Pro plans offer advanced features and ad removal.

**Highlights:** Network time synchronization, Offset and uncertainty measurement, Corrected clock display, Countdown timers, Team countdown sharing, World clocks, Home-screen widget

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Atomic Exact Time Pro | $2.99 | per month |
| Pro Yearly | $19.99 | per year |
| Atomic Exact Time Pro | $2.99 | one-time |


## Frequently asked questions

### Is NanoStopWatch byNSDev free?

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

### Is Atomic Exact Time free?

Atomic Exact Time is free to download, with in-app purchases available.

### Do NanoStopWatch byNSDev or Atomic Exact Time have ads?

Atomic Exact Time shows ads; NanoStopWatch byNSDev does not.

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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.*