Chrono review
A full clock toolkit with flexible alarms, but its work-in-progress status warrants caution.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Chrono brings alarms, world clocks, timers and a stopwatch together in an open-source Android app. Its flexible scheduling and optional dismissal challenges suit solo users who want more control than a basic repeating alarm, while the bundled timing tools can replace several separate clock utilities. It is a practical fit for people comfortable with community-supported software; anyone depending on an alarm for a critical appointment should approach it cautiously.
Alarm schedules cover daily, weekly, selected weekdays, specific dates and date ranges. Users can configure ringtone, rising volume, vibration and snooze behavior, and some alarms can require solving math problems, retyping text or completing sequence tasks before dismissal. Those options give Chrono a useful range for different wake-up routines. The project describes the app as a work in progress and advises testing reliability before relying on it for critical alarms, so users who need a dependable backup or stronger reliability assurances should consider another option.
The toolkit extends beyond waking: world clocks offer city search and relative time differences, timers support presets and configurable sounds, and the stopwatch keeps lap history with lap comparisons. Customizable color and style themes let users adjust the appearance. Chrono is distributed free as open-source software, with community support. That combination makes it appealing to Android users who value an open project and want multiple clock functions in one app, but it is less suited to people who need sleep tracking, wearable support or direct support channels.
Chrono pros and cons
- Where it wins
- Schedules alarms by weekday, date or date range, with configurable sound and snooze
- Can require math, text retyping or sequence tasks to dismiss alarms
- Combines world clocks, multiple timers and stopwatch lap history
- Where it doesn't
- The project cautions users to test reliability before relying on critical alarms
- Focused on Android rather than a cross-platform clock experience
- Community support may not suit users seeking direct vendor support
Chrono fact sheet, pricing and score →
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