Top 30 Free Time Tracking Software That Syncs with Calendar Apps

Curated list of the top 30 free (or freemium) time‑tracking tools that can synchronize with Google Calendar, Outlook, Apple Calendar or iCal for seamless scheduling and billing.

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Popular lightweight timer with a free tier; automatically imports events from Google Calendar, Outlook and iCal.

Unlimited free time‑tracking for teams; two‑way sync with Google Calendar, Outlook and Apple Calendar.

#4 Timely

AI‑driven automatic tracking; free plan lets you link Google Calendar or Outlook to auto‑populate time entries.

#5 Harvest

Free for one user and two projects; integrates with Google Calendar and Outlook to pull scheduled work.

Free for one user; offers calendar sync (Google Calendar, Outlook) for scheduled tasks and activity tracking.

Free plan includes unlimited users; can import Google Calendar events to create time entries automatically.

#8 Paymo

Free for freelancers (up to 5 projects); syncs with Google Calendar and Outlook to align tasks with appointments.

#9 Kimai

Open‑source, self‑hosted tracker; supports iCal/Google Calendar import for scheduled work.

Free, open‑source automatic tracker; can overlay calendar data via iCal feeds.

#11 ManicTime

Free desktop version; can import Outlook/Google Calendar events to correlate with tracked activity.

Free tier monitors computer usage; can sync with Google Calendar to match focus sessions with scheduled events.

#13 Hours

iOS‑only free app; integrates with Apple Calendar to start/stop timers based on calendar events.

#14 ATracker

Free Android/iOS timer; can import Google Calendar events for quick start/stop of tasks.

#15 Timeneye

Free for one user; two‑way sync with Google Calendar, Outlook and iCal for project‑based time logging.

#16 Tick

Free trial with calendar integration; syncs with Google Calendar to turn events into billable time.

#17 eHour

Open‑source web app; supports iCal import to align time entries with calendar events.

#18 Jibble

Free employee time‑tracking; integrates with Google Calendar for scheduled shift imports.

#19 Clockodo

Free trial version; offers Google Calendar and Outlook sync for project planning.

#20 ClickUp

Free plan includes native time tracking; calendar view syncs with Google Calendar and Outlook.

#21 Asana

Free tier project manager with time‑tracking integrations; can sync tasks with Google Calendar.

#22 Todoist

Free task manager; via built‑in integration can log time entries and sync tasks with Google Calendar.

#23 Notion

Free personal plan; using templates and the Google Calendar embed, you can track time against calendar events.

#24 TMetric

Free for up to 5 users; two‑way sync with Google Calendar and Outlook to auto‑populate time entries.

Free planning view; syncs with Google Calendar to schedule and track time against forecasts.

#26 Everhour

Free trial; integrates directly with Google Calendar and Outlook for real‑time time logging.

Free for up to 3 users; built‑in timer and calendar sync with Google Calendar.

#28 Wrike

Free plan for small teams; time‑tracking widget and calendar sync with Google Calendar.

#29 Bitrix24

Free CRM & project suite; includes time tracker and two‑way sync with Google Calendar.

#30 nTask

Free task manager with timer; can sync tasks with Google Calendar for time‑based tracking.

#31 Redbooth

Free plan includes time tracking; integrates with Google Calendar to align meetings with logged hours.

#32 My Hours

Free tier for freelancers; supports Google Calendar import to create time entries from events.

Free Chrome extension that lets you start/stop timers directly from Google Calendar events.

Free browser add‑on that adds a timer button to Google Calendar and Outlook web interfaces.