# Chromeo vs Atomic Clock

The clearest difference is update cadence: Chromeo at every 2 days against Atomic Clock's every 6 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Chromeo sells 2 one-off in-app purchases and Atomic Clock sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Chromeo ships an update every 2 days, Atomic Clock every 6 weeks. The most recent releases landed on September 7, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Chromeo | Atomic Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (4 ratings)](https://appshunter.io/ios/app/atomic-clock-precision-time/id6760377377/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 6 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 38 MB | 9 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Teemu Lehto](https://appshunter.io/developer/1879324674) | [家宝 戴](https://appshunter.io/developer/1826395838) |

## What reviewers say

### Chromeo

[App page](https://appshunter.io/ios/app/chromeo-visual-timer/id6759532507)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chromeo Pro -50% | $1.99 | one-time |
| Chromeo Pro | $3.99 | one-time |


### Atomic Clock

[App page](https://appshunter.io/ios/app/atomic-clock-precision-time/id6760377377)

This utility provides highly accurate time synchronization using NTP, displaying precise time with millisecond detail. It allows comparison with network time, shows sync offset and latency, and offers various clock styles with customization options. It's designed for users needing a reliable, precise reference clock.

**Highlights:** NTP-based time synchronization, Millisecond time detail, Local time and UTC display, Device offset and network latency indicators, Automatic sync, Multiple clock styles, Customizable colors and night mode

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AtomicClock Pro Monthly | $5.99 | per month |
| AtomicClock Pro Monthly | $19.99 | per year |


## Frequently asked questions

### Is Chromeo free?

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

### Is Atomic Clock free?

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

### Do Chromeo or Atomic Clock have ads?

Neither Chromeo nor Atomic Clock shows ads.

### Which is updated more often, Chromeo or Atomic Clock?

Chromeo ships an update every 2 days, and Atomic Clock every 6 weeks. Most recently, Chromeo was updated on September 7, 2026 and Atomic Clock on September 18, 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.*