# Clockwork vs Chain Slings

The clearest difference is in-app purchases: Chain Slings at none against Clockwork's 1. On price, ads, device support and iOS requirement there is nothing between them.

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

## The numbers

| Metric | Clockwork | Chain Slings |
| --- | --- | --- |
| Price | Free | Free |
| 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 | — |
| Monetization | Free with in-app purchases | — |
| Size | 242 MB | 21 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Appfred AS](https://appshunter.io/developer/1612061035) | [pewag UK Ltd](https://appshunter.io/developer/1801770348) |

## 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 |


### Chain Slings

[App page](https://appshunter.io/ios/app/chain-slings/id6743173354)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Clockwork free?

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

### Is Chain Slings free?

Chain Slings is free to download, with no in-app purchases.

### Do Clockwork or Chain Slings have ads?

Neither Clockwork nor Chain Slings 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.*