# On vs Atomic Exact Time

The clearest difference is in-app purchases: On at none against Atomic Exact Time's 1. On also leads on iOS requirement (8.0 vs 16.4). On price, ads and device support there is nothing between them.

Both are free to download. Atomic Exact Time sells 1 in-app purchase, starting at $2.99 per month. On asks for nothing beyond the download.

## The numbers

| Metric | On | Atomic Exact Time |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/atomic-exact-time-clock/id6797418012/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 6 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 44 MB | 46 MB |
| Requires iOS | **8.0** | 16.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Alain Lussac](https://appshunter.io/developer/1068156070) | [SUPER KIM KIMYA VE TEKSTIL SANAYI TICARET LIMITED SIRKETI](https://appshunter.io/developer/1896542696) |

## What reviewers say

### On

[App page](https://appshunter.io/ios/app/on-off-post/id1416484290)

**In-app purchases:** none


### Atomic Exact Time

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

This app precisely calibrates your device's clock against internet time sources, accounting for network delays. It offers a full-screen display with millisecond accuracy, detailed reports on clock deviation, and a precision alarm. Ideal for professionals and enthusiasts requiring exact timing.

**Highlights:** Millisecond accurate clock display, Device offset status, Network latency and drift reports, Precision alarm, Timecode and markers, Widgets, Multiple clock themes

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Atomic Exact Time Pro | $2.99 | per month |


## Frequently asked questions

### Is On free?

On 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 On or Atomic Exact Time have ads?

Neither On nor Atomic Exact Time 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.*