# Clockwork vs Apex Security

The clearest difference is in-app purchases: Apex Security at none against Clockwork's 1. Apex Security also leads on device support (3 vs 1). 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. Apex Security asks for nothing beyond the download.

Clockwork ships an update every 3 weeks, Apex Security monthly. Both last shipped on October 30, 2026.

## The numbers

| Metric | Clockwork | Apex Security |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (24 ratings)](https://appshunter.io/ios/app/clockwork-watch-app/id1612061033/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 45.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 242 MB | 106 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Appfred AS](https://appshunter.io/developer/1612061035) | [AmSmart AS](https://appshunter.io/developer/765547481) |

## 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 |


### Apex Security

[App page](https://appshunter.io/ios/app/apex-security/id6476107657)

**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 Apex Security free?

Apex Security is free to download, with no in-app purchases.

### Do Clockwork or Apex Security have ads?

Neither Clockwork nor Apex Security shows ads.

### Which is updated more often, Clockwork or Apex Security?

Clockwork ships an update every 3 weeks, and Apex Security monthly. Most recently, Clockwork was updated on October 30, 2026 and Apex Security on October 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*