# Self Defense Alarm Lite vs CKClock

The clearest difference is in-app purchases: Self Defense Alarm Lite at none against CKClock's 1. Self Defense Alarm Lite also leads on iOS requirement (8.0 vs 17.6). CKClock's advantage is update cadence (every 9 days vs every 10 months). On price, ads and device support there is nothing between them.

Both are free to download. CKClock sells 1 one-off in-app purchase. Self Defense Alarm Lite asks for nothing beyond the download.

Self Defense Alarm Lite ships an update every 10 months, CKClock every 9 days. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Self Defense Alarm Lite | CKClock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ckclock/id1469893325/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 34 MB | 19 MB |
| Requires iOS | **8.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [CHIA HO KUO](https://appshunter.io/developer/433588685) | [向阳 唐](https://appshunter.io/developer/1405639788) |

## What reviewers say

### Self Defense Alarm Lite

[App page](https://appshunter.io/ios/app/self-defense-alarm-lite/id851002131)

**Features:** macOS Compatibility

**In-app purchases:** none


### CKClock

[App page](https://appshunter.io/ios/app/ckclock/id1469893325)

This utility app provides a simple and practical flip clock interface for your desktop or bedside. It's designed for easy viewing of the current time, especially when you wake up during the night.

**Highlights:** Simple interface design, Practical desktop clock, Bedside clock functionality, Easy time viewing

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock styles | $4.99 | one-time |


## Frequently asked questions

### Is Self Defense Alarm Lite free?

Self Defense Alarm Lite is free to download, with no in-app purchases.

### Is CKClock free?

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

### Do Self Defense Alarm Lite or CKClock have ads?

Neither Self Defense Alarm Lite nor CKClock shows ads.

### Which is updated more often, Self Defense Alarm Lite or CKClock?

Self Defense Alarm Lite ships an update every 10 months, and CKClock every 9 days. Most recently, Self Defense Alarm Lite was updated on October 26, 2026 and CKClock on October 24, 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.*