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Adaptive Day
Preview schedule adjustments when your plans slip, without silently changing fixed events.
Rhythm Adaptive Calendar
Your day changes. Your calendar should adapt.
Rhythm is an Android-first calendar designed around the reality between events: preparation, travel, changing plans, reminders and the time you actually have available.
Built around your actual day
Rhythm combines calendar views and tasks with practical preparation, manual activity measurements and optional shared plans. It remains local-first, with no advertising or third-party analytics SDKs.
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Travel-aware planning
Plan around preparation, travel time and leave-by recommendations, with clear estimates and user control.
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Local-first privacy
Use local planning without cloud sync, or choose account-protected synchronization. Shared Rhythms contain only their own shared items, not other members' private calendars.
Measure your real duration
Opt in for a recurring activity, record Start and Finish, and review a personal estimate after at least five valid measurements. Changes are your choice.
Learn about measurementsArrange a meeting · Pro
Propose one to three times in a shared Rhythm, let members reply and confirm one shared event. No private-calendar inspection.
Plan a shared meetingCapture events and tasks
Check recognized dates and times, add reminders and use checklists. Quick task entry offers Pro users a shorter task-capture flow.
Explore quick entryLegal and support
Clear information, easy to find
Read step-by-step instructions and the policies covering calendar access, optional cloud features, travel routing, backups, notifications and Google Play purchases. Newest beta releases can be awaiting Google review; this site is not a guarantee of immediate tester availability.