6 Task Managers With the Best Google Calendar Two-Way Sync (2026)

Motion takes the top spot because it doesn't just sync with Google Calendar — it eliminates the need to manually schedule tasks on your calendar entirely. When you add a task with a deadline and priority, Motion's AI automatically finds the best open slot on your Google Calendar and schedules it as a time block. When a meeting gets added to your calendar, Motion automatically reschedules affected tasks around it. The sync isn't just two-way; it's intelligent.

The auto-scheduling engine is Motion's core innovation. You tell Motion what needs to get done and when it's due. Motion looks at your calendar (meetings, existing blocks, working hours), considers task priority and estimated duration, and creates a realistic schedule that accounts for your actual available time. When reality changes — a meeting runs long, a new urgent task appears, a deadline shifts — Motion recalculates and reschedules everything automatically. This is fundamentally different from manually dragging tasks onto calendar slots.

For Google Calendar users, Motion's integration is seamless. Your Google Calendar becomes the source of truth for both meetings and task time blocks. Colleagues who only see your Google Calendar see you as busy during task blocks, preventing meeting conflicts. The weekly planning view shows tasks and calendar events together with no visual distinction — because in Motion's model, everything is a calendar commitment. The trade-off is control: if you prefer manually choosing when to work on each task, Motion's AI scheduler can feel prescriptive.

Sunsama pairs the best daily planning experience with deeply integrated Google Calendar sync. The signature feature is the guided daily planning flow: each morning, Sunsama walks you through pulling tasks from connected sources (Gmail, Slack, Asana, Todoist, Notion), estimating how long each will take, and dragging them onto your Google Calendar as time blocks. The sync is fully two-way — move a block in Google Calendar, and Sunsama updates. Complete a task in Sunsama, and the calendar block marks as done.

What makes Sunsama's calendar sync stand out is the intentionality layer. Unlike Motion (which auto-schedules) or Todoist (which syncs passively), Sunsama asks you to make conscious choices about when you'll do each task. The daily shutdown ritual shows how much time you planned versus how much you actually spent, building self-awareness about estimation accuracy and work capacity. Over weeks, this data reveals patterns: you consistently overplan Mondays, underplan Wednesdays, and lose 2 hours daily to unplanned tasks from Slack.

The multi-source integration makes Sunsama a calendar sync hub for productivity-stack users. Tasks from Todoist, issues from Linear, emails from Gmail, and messages from Slack all flow into Sunsama's daily plan and onto your Google Calendar. Instead of checking five tools each morning, you check Sunsama, plan your day, and see everything as calendar blocks. For professionals juggling multiple tools, this centralized daily planning with Google Calendar as the output is uniquely valuable.

Akiflow is a command-bar-first productivity tool that treats Google Calendar as a first-class citizen. You can create, edit, and delete Google Calendar events directly from Akiflow, and every change syncs bidirectionally. Tasks live alongside calendar events in a unified daily view — there's no conceptual separation between "things to do" and "time blocks." For power users who want keyboard-driven task-to-calendar workflows, Akiflow is the fastest option.

The universal inbox concept is Akiflow's calendar sync differentiator. Tasks from Todoist, Asana, Jira, Gmail, Slack, and Notion flow into Akiflow's inbox. From there, you drag them onto your Google Calendar to schedule them — or use keyboard shortcuts to assign dates and durations instantly. The result is a single interface where you can see everything you need to do, everything already on your calendar, and the gaps between them. Time-blocking becomes a 5-minute keyboard-driven exercise instead of a 20-minute mouse-clicking ritual.

Akiflow's Google Calendar integration handles the edge cases well. It supports multiple Google Calendar accounts, shows calendars from team members for availability checking, and handles all-day events distinctly from timed blocks. The share-availability feature generates booking links based on your actual Akiflow+Google Calendar availability. For professionals who manage multiple calendars (personal + work + side project), Akiflow's multi-account handling is the most complete.

Todoist offers the most proven Google Calendar two-way sync of any pure task manager. The integration has been refined over years: tasks with due dates and times appear as Google Calendar events. Move a calendar event, and the task's schedule updates in Todoist. Create an event in a designated Todoist calendar, and it creates a task. Duration-based planning lets you assign time estimates (30 min, 1 hour, 2 hours) that render as correctly-sized calendar blocks.

For most users, Todoist's calendar sync hits the practical sweet spot. It's not trying to replace your calendar app or automate your scheduling — it simply ensures that your tasks and calendar stay in sync without manual double-entry. The natural language input ("email proposal draft tomorrow at 2pm for 1 hour") creates a task that immediately appears as a 1-hour Google Calendar block on tomorrow at 2pm. For users who think in natural language rather than form fields, this is the fastest task-to-calendar-block workflow.

Todoist's task management depth is its advantage over calendar-first tools. Projects, sub-tasks, labels, filters, recurring tasks, and collaboration features make it a complete productivity system. Google Calendar sync is one integration among many — it works with 100+ apps via native integrations and Zapier. For users who need a serious task manager first and want calendar sync as a bonus, Todoist delivers both without forcing you into a calendar-centric workflow.

TickTick is the only task manager on this list with a built-in calendar view that rivals standalone calendar apps. Instead of syncing tasks to Google Calendar and switching between two apps, TickTick shows your tasks and Google Calendar events together in a native daily, weekly, or monthly calendar view. You see everything in one interface — tasks as colored blocks, Google Calendar events as overlays, and open time slots for new work.

The Google Calendar integration works via calendar subscription: TickTick subscribes to your Google Calendar and displays events alongside tasks. Creating tasks with time assignments shows them as calendar blocks in TickTick's calendar view. The sync is functional but more limited than Todoist's: Google Calendar events appear in TickTick, but editing a Google Calendar event from TickTick doesn't push changes back. It's closer to "read Google Calendar + write tasks to calendar" than true bidirectional sync.

Where TickTick compensates is the built-in calendar experience. The integrated Pomodoro timer lets you start focused work sessions directly from calendar task blocks. Habit tracking appears alongside your calendar for daily routine visibility. The Eisenhower Matrix view helps prioritize before time-blocking. For users who want a single app that combines task management, calendar viewing, Pomodoro timing, and habit tracking — without paying for multiple subscriptions — TickTick's integrated approach is more practical than syncing separate tools.

Reclaim.ai approaches the task-calendar problem from the opposite direction: instead of being a task manager that syncs to Google Calendar, it's a Google Calendar optimization layer that handles tasks. You add tasks with deadlines, priority, and time estimates, and Reclaim automatically finds and protects time on your Google Calendar for them. When meetings shift or new ones appear, Reclaim reschedules task blocks to maintain your commitments.

The smart scheduling goes beyond individual task blocks. Reclaim protects time for habits (exercise, reading, lunch breaks), buffers between meetings, and focus time blocks — all automatically adjusting as your calendar evolves. The Calendar Sync feature keeps multiple calendars in sync, preventing double-booking across personal and work calendars. For team use, Reclaim shows scheduling links that reflect actual availability across all commitments, not just one calendar's free/busy status.

Reclaim's limitation is that it's not a task manager — it's a calendar manager that happens to handle tasks. There are no projects, sub-tasks, labels, or the organizational structure that Todoist or TickTick provide. Tasks in Reclaim are flat items with deadlines and durations. For complex project management, you'd pair Reclaim with a separate task manager (it integrates with Todoist, Asana, ClickUp, and Linear). For professionals whose primary challenge is protecting time for important work against meeting creep, Reclaim's calendar-first approach solves the right problem.