# Clockwork vs WatchWatcher

The clearest difference is price: Clockwork at Free against WatchWatcher's $1.99. Clockwork also leads on update cadence (every 3 weeks vs every 9 months) and iOS requirement (16.4 vs 18.2). WatchWatcher's advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.

Clockwork is free to download; WatchWatcher costs $1.99 up front. Clockwork sells 1 one-off in-app purchase. WatchWatcher asks for nothing beyond the download.

Clockwork ships an update every 3 weeks, WatchWatcher every 9 months. The most recent releases landed on October 11, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Clockwork | WatchWatcher |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.4 (24 ratings)](https://appshunter.io/ios/app/clockwork-watch-app/id1612061033/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 9 months |
| Monetization | Free with in-app purchases | — |
| Size | 242 MB | 14 MB |
| Requires iOS | **16.4** | 18.2 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Appfred AS](https://appshunter.io/developer/1612061035) | [silas slack](https://appshunter.io/developer/410593289) |

## 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 |


### WatchWatcher

[App page](https://appshunter.io/ios/app/watchwatcher-accuracy-tracker/id6742189328)

**In-app purchases:** none


## Frequently asked questions

### Is Clockwork free?

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

### Is WatchWatcher free?

WatchWatcher costs $1.99, with no in-app purchases.

### Do Clockwork or WatchWatcher have ads?

Neither Clockwork nor WatchWatcher shows ads.

### Which is updated more often, Clockwork or WatchWatcher?

Clockwork ships an update every 3 weeks, and WatchWatcher every 9 months. Most recently, Clockwork was updated on October 11, 2026 and WatchWatcher on October 9, 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.*