One Alarm vs EM930
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
One Alarm
A minimalist alarm clock designed for simplicity. Set alarms with a single tap by dragging the minute hand. A badge on the app icon shows a countdown to the alarm time.
- Minimalist interface
- One-tap alarm setting
- Drag minute hand to set time
- AM/PM quick switch
- Icon countdown badge
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One Alarm is a minimal alarm clock. Drag the minute hand to set the alarm time. Drag or tap the switches to turn the alarm ON/OFF and quickly set AM/PM. If you’re sick of complicated alarm interfaces, One Alarm is for you. Tapping through multiple menus just to set an alarm is tedious. With One Alarm, you can set an alarm with one tap. Simply set the alarm and exit the app. A badge on the One Alarm icon will appear and countdown every hour to show approximately how many hours are left until the alarm sounds. We hope you like it! Love, CW&T
EM930
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The EM930 Communication Software is an advanced tool designed to enhance the functionality of your multimeter by enabling seamless connection with your smartphone. With this app, you can simulate and mirror real-time multimeter readings directly on your mobile device, allowing you to monitor data from a distance. Additionally, the software provides remote control of the multimeter, giving you the ability to adjust settings and operate the device without needing to be physically present. The app also features powerful data logging capabilities, enabling you to record and export readings for further analysis or reporting purposes. Whether you're working on complex projects or need to keep track of key measurements over time, this app provides a flexible and user-friendly interface to simplify your workflow. Key Features: - Real-time data synchronization between multimeter and smartphone. - Remote control capabilities to operate your multimeter from your mobile device. - Data logging to record and export measurements for detailed analysis. - User-friendly interface for easy access to multimeter functions via your phone.
Screenshots
Verdict
The clearest difference is in-app purchases: EM930 at none against One Alarm's 1. EM930 also leads on iOS requirement (12.0 vs 15.0). 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. One Alarm sells 1 one-off in-app purchase. EM930 asks for nothing beyond the download.
| Parameter | One Alarm | EM930 |
|---|---|---|
| Price | Free | Free |
| Rating | 3.6 (19 ratings) — better | — |
| Positive reviews | 50.9% of reviews | — |
| Number of ratings | 19 — better | — |
| Update frequency | Every 3 weeks | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 32 MB |
| Age rating | 4+ | 17+ |
| Developer | CW&T | ZHANGZHOU EASTERN INTELLIGENT METER CO., LTD. |
In-app purchases
One Alarm
- instant unlock$0.99
EM930
No in-app purchases







