HA Alarm Clock
HA Alarm Clock: A free, open-source Android clock app with alarms, timers, and optional Home Assistant controls. Ranked #22 of 39 in Android Alarm Clock Apps by our editors (6.9/10); pricing: Free plan; best for home Assistant users wanting an open-source clock.
At a glance
- Editor score6.9 / 10
- PricingFree plan
- Best forHome Assistant users wanting an open-source clock
- Free planYes
- Paid fromNone
- Facts checked3 Oct 2026
Where it wins
- Repeat-day alarms include labels, ringtones, vibration, and gradual volume increase.
- Timers, a lap-recording stopwatch, offline world clock, and widgets are included.
- Optional Home Assistant sync supports alarm controls, sensors, and incoming commands.
Where it doesn't
- Requires Android 8.0 or newer.
- Distributed as an APK through GitHub Releases.
- No verified sleep or alarm-challenge features are described.
Our verdict on HA Alarm Clock
HA Alarm Clock is an open-source Android app for people who want everyday clock tools on their phone, with optional Home Assistant synchronization. Its alarm schedules can repeat on selected days and include labels, ringtones, vibration, and gradual volume increase. The app also provides countdown timers, a lap-recording stopwatch, an offline world clock with searchable time zones, and home-screen clock widgets. Alarm data is stored and scheduled on the phone, so the core clock functions work offline. It is aimed at individual Android users rather than teams or a broader smart-home platform audience.
Home Assistant is the app’s key ecosystem distinction. Synchronization is optional; when enabled, alarm state can sync and the integration exposes controls and sensors for automations. Home Assistant can also send alarm commands to the phone. This makes the app a fit for users who already want alarm actions connected to their Home Assistant setup, while users who only need standalone alarms can use the local features without that integration. The published description focuses on clock and automation functions rather than sleep tracking or challenge-based alarm dismissal.
Distribution and device requirements are worth considering before choosing it. HA Alarm Clock requires Android 8.0 or newer and is distributed as an APK through GitHub Releases, rather than being described as available through an app store. Its open-source model and free plan suit users comfortable installing an Android package and, if desired, connecting Home Assistant. Choose another alarm app if you need documented sleep features or alarm challenges, or if APK installation does not fit your preferences. For a free, offline clock with a Home Assistant option, its focused set of alarms, timers, stopwatch, world clock, and widgets covers the central use case.
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HA Alarm Clock pricing
HA Alarm Clock fact sheet
| Free plan | Yes |
|---|---|
| Paid from | None |
| Wake-up challenges | Not verified |
| Sleep tracking | Not verified |
| Smart-wake window | Not verified |
| Recurring schedules | Yes |
| Timer support | Yes |
| Wearable support | Not verified |
| Deployment | Mobile, Self-hosted |
| Platforms | Android |
| Built for | Solo (editorial estimate) |
| Integrations | 1 integrations: Home Assistant |
| Pricing | Free plan |
| Website | github.com |
| Facts checked | 3 Oct 2026 |
HA Alarm Clock integrations
HA Alarm Clock lists 1 integrations on its own site.
- Home Assistant
Alternatives to HA Alarm Clock
- Google ClockA free Android clock for recurring alarms, timers, world times and bedtime sounds.9.2
- Sleep CycleA free-to-start sleep tracker pairing a 30-minute smart-wake window with nightly analysis.8.8
- aka AlarmA free, open-source Android alarm with noise-based smart wake and simple controls.7.9
See all HA Alarm Clock alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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