Alarmium vs OnTime Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Alarmium
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Alarmium is a modern alarm app offering an elegant and efficient alarm experience. Stop setting multiple alarms just to be on time. With Clustered Alarms, schedule several alarms at once with a single tap. Stay on track during your commute with Geo Alarms, which notify you as you approach your destination—no matter how your route changes. Using Geo Triggers, you can add multiple locations to a single alarm and get alerted when you’re near any of them. Simple, elegant, and reliable, Alarmium helps you focus on your day—not your alarms. And yes, it also shows the current time. Alarmium — alarms made easy. ⏰
OnTime Clock
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OnTime Clock — Always rings. Never late. 【6 Alarm Types】 • Standard Alarm: Daily reminders at fixed times • Fixed Alarm: One-time reminder for a specific date • Quick Alarm: Countdown timer, rings in minutes • Habit Alarm: Multiple reminders for one task, build good habits • Location Alarm: Auto check-in at work, reminders when leaving home • Hourly Chime: Automatic time announcement every hour 【Habit Building】 • Medication, water, exercise — never miss multiple daily reminders • 30+ habit templates, add with one tap • 20+ motivational quotes displayed randomly 【Smart Features】 • Auto-skip holidays, rings only on workdays • Regional holiday database for Greater China • Home screen widget shows your next alarm at a glance • Dynamic Island displays countdown in real time 【Native iOS 26 Experience】 • Built on AlarmKit — rings even on silent or locked screen • Liquid Glass design — smooth and beautifully native 【Privacy First】 • All data stored locally on your device • No network, no tracking, no ads, no in-app purchases • Free forever
Screenshots
Verdict
The clearest difference is in-app purchases: OnTime Clock at none against Alarmium's 2. Alarmium's advantage is update cadence (every 8 days vs every 2 months). On price, ads, device support and iOS requirement 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. Alarmium sells 2 one-off in-app purchases. OnTime Clock asks for nothing beyond the download.
Alarmium ships an update every 8 days, OnTime Clock every 2 months. The most recent releases landed on October 28, 2026 and October 11, 2026 respectively.
| Parameter | Alarmium | OnTime Clock |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 8 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.0 | 26.0 |
| Further details — not scored | ||
| Size | 8 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Ravindu Wataketiya | 文巧 刘 |
In-app purchases
Alarmium
- Alarmium Essentials$4.99
- Alarmium Plus$9.99
OnTime Clock
No in-app purchases









