# Clockwork vs Watch Accuracy Checker

The clearest difference is rating: Clockwork at 4.4 against Watch Accuracy Checker's 1.0. Clockwork also leads on ratings volume (24 vs 1). Watch Accuracy Checker's advantage is in-app purchases (none vs 1) and review sentiment (67% vs 43%). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. Clockwork sells 1 one-off in-app purchase. Watch Accuracy Checker asks for nothing beyond the download.

Clockwork holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: Clockwork has 24 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 43% of Clockwork's written reviews are positive against 67% of Watch Accuracy Checker's, so the app with the better star average is not the one people write more warmly about.

Clockwork ships an update every 3 weeks, Watch Accuracy Checker monthly. The most recent releases landed on October 11, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Clockwork | Watch Accuracy Checker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (24 ratings)](https://appshunter.io/ios/app/clockwork-watch-app/id1612061033/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/watch-accuracy-checker/id6478476307/reviews) |
| Number of ratings | **24** | 1 |
| Positive reviews | 42.9% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 242 MB | 14 MB |
| Requires iOS | 16.4 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Appfred AS](https://appshunter.io/developer/1612061035) | [Cogniter Technologies Pvt Ltd](https://appshunter.io/developer/478571271) |

## What reviewers say

### Clockwork

[App page](https://appshunter.io/ios/app/clockwork-watch-app/id1612061033)

This app allows you to measure the accuracy of your watches using your phone's camera. It compares an image of your watch to an atomic clock to calculate its timekeeping offset. Track accuracy over time with graphs and store detailed watch information.

**Highlights:** Measure accuracy using images, Atomic clock synchronization, Accuracy over time graphs, Store detailed watch information, Dark mode support, Digital and analog atomic clock

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Clockwork Premium | $5.99 | one-time |


### Watch Accuracy Checker

[App page](https://appshunter.io/ios/app/watch-accuracy-checker/id6478476307)

Measure and track the timekeeping accuracy of your mechanical, automatic, or quartz wristwatches. The app provides a reference timer and allows you to capture screenshots for comparison, maintaining a history of your tracking sessions.

**Highlights:** Add and edit watch details, Track accuracy against global time, Foreground and background timer, Multiple watch tracking, Screenshot capture for comparison, Tracking history with timestamps, Tracker running notifications

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

**In-app purchases:** none


## Frequently asked questions

### Is Clockwork free?

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

### Is Watch Accuracy Checker free?

Watch Accuracy Checker is free to download, with no in-app purchases.

### Which has better reviews, Clockwork or Watch Accuracy Checker?

Clockwork is rated higher. Clockwork averages 4.4 out of 5 from 24 ratings, while Watch Accuracy Checker averages 1.0 from 1 ratings.

### Do Clockwork or Watch Accuracy Checker have ads?

Neither Clockwork nor Watch Accuracy Checker shows ads.

### Which is updated more often, Clockwork or Watch Accuracy Checker?

Clockwork ships an update every 3 weeks, and Watch Accuracy Checker monthly. Most recently, Clockwork was updated on October 11, 2026 and Watch Accuracy Checker on October 4, 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.*