Alarm Klock review
A straightforward open-source Android alarm app with flexible schedules and sound options.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Alarm Klock is an open-source alarm clock app for Android, aimed at people who want straightforward alarms with control over timing and sound. Its settings can apply globally or per alarm, and recurring alarms can be set for selected days of the week. This makes it a fit for routine schedules and users who prefer configuring their alarms without a paid-plan structure. The app is mobile-only, and its published feature set centers on alarm scheduling rather than broader sleep or wake-up tools.
Sound and timing are the main areas of flexibility. Alarms can use a ringtone, vibration, or both, and audio can come from MP3s or the device’s media library. Snooze time and alarm volume are adjustable, with global and per-alarm settings available. These options suit people who want to tailor individual alarms or use their own audio. The listed capabilities do not include sleep tracking or wake challenges, so buyers seeking those functions should consider an app built around sleep monitoring or interactive wake-ups instead.
Alarm Klock is open source and free, with the F-Droid listing identifying the license as Apache License 2.0 and offering downloadable builds. The listing’s version 2.13 requires Android 13 or newer, a relevant constraint for anyone considering compatibility with an older device. Choose Alarm Klock if an open-source Android app with repeating schedules, customizable sound, snooze, and volume covers your needs. Look elsewhere if you need sleep tracking, wearable features, or a broader set of sleep-related tools.
Alarm Klock pros and cons
- Where it wins
- Schedule alarms to repeat on selected days of the week.
- Choose a ringtone, vibration, or MP3 and media-library audio.
- Adjust snooze time and alarm volume globally or per alarm.
- Where it doesn't
- No sleep tracking is listed.
- No wake challenges are listed.
- Listed version 2.13 requires Android 13 or newer.
Alarm Klock fact sheet, pricing and score →
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. How we rank.
Last updated · How we research and update