Self Defense Alarm Lite vs CKClock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Self Defense Alarm Lite
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* Detect the 3.5 inch earphone jack to trigger the alarm - start the alarm when pulling out the earphone and close the alarm when insert the earphone in. * Detect the shake to trigger the alarm. (for the complete version) * High intensity sounds of alarm can effectively deter offenders. There are many sound effects and volume levels can be selected. * Support the running in the background; you can execute other functions, e.g., listening to music, playing games, browsing the web page, etc. * In order to increase the sensitivity of the alarm when pulling out the earphone plug, please do not insert it to the end (too tight). * One of use scenario: Insert the earphone in the device in advance; when encountering the bay guy, you can immediately pull the earphone plug out to start the alarm. * Provide the display function of real-time GPS coordinate. * Provide the track display function on the map for the latest activation period of the alarm. * Provide the function of sending SOS message and location to notify the designated object when tiggering the alarm. (The designated object must install this APP.) Location and message data are transferred only between the two parties' App, and aren’t transferred to any third party to protect personal privacy. The App is suitable for users who want to protect personal privacy. PS: 1. We will add other functions in the future. 2. Continued use of GPS running in the background can dramatically decrease battery life. 3. Low battery, etc. might result in suspending or termination of APP in the backgrond. * This version doesn’t provide the selections for sound effects and volume levels, and the function of sending SOS message. (The complete version provides the selections for sound effects and volume levels, and the function of sending SOS message.)
CKClock
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.
- Simple interface design
- Practical desktop clock
- Bedside clock functionality
- Easy time viewing
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At the moment the clock is a practical desktop clock tools, interface design simple, practical strong. Before you go to sleep, power up your phone and put it on your desk or bedside table so you can see the current time whenever you wake up.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Self Defense Alarm Lite | CKClock |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 10 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 8.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 34 MB | 19 MB |
| Age rating | 4+ | 9+ |
| Developer | CHIA HO KUO | 向阳 唐 |
In-app purchases
Self Defense Alarm Lite
No in-app purchases
CKClock
- Unlock styles$4.99
Questions
Is Self Defense Alarm Lite free?
Is CKClock free?
Do Self Defense Alarm Lite or CKClock have ads?
Which is updated more often, Self Defense Alarm Lite or CKClock?
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