I used to end every day feeling like I was busy but got nothing done. Full calendar. Lots of movement. No progress on the things that mattered.
Then I tried time blocking. The idea is simple: instead of a to-do list, you put tasks on your calendar as actual time slots. "Write proposal" isn't a task floating on a list. It's a block from 9:00 to 10:30 on Tuesday. When that time comes, that's what you do. Nothing else.
It gave me back about 5 hours a week. Not by working more. By wasting less time deciding what to do next.
Here are the 4 apps that make time blocking easy.
The short answer
Google Calendar is free and works fine. If you want a dedicated time blocking tool with AI scheduling, Reclaim.ai is the best upgrade.
Dad Math: How We Ranked These
Every ranking on Dadzilluh uses a simple scoring system. No black boxes. Here's what we weighed:
Google Calendar (free)
Best for: Dads who don't want another app. Just use what you have.
✓ You already have it
✓ Color-code blocks by category (work, family, side hustle)
✓ Works on every device
✓ Shared calendars with your partner
— No AI scheduling or smart suggestions
— Manual drag-and-drop only
— No built-in task list
Reclaim.ai
Best for: Dads with packed calendars who need AI to find open slots.
✓ AI automatically finds time for your tasks and habits
✓ Syncs with Google Calendar seamlessly
✓ Protects personal time blocks from work meetings
✓ Smart scheduling adjusts when plans change
— $10/month for the good features
— Only works with Google Calendar (not Apple)
— AI can feel aggressive about scheduling if you let it
Best for: Dads who want a daily planning ritual, not just a calendar.
✓ Beautiful daily planning workflow
✓ Pulls tasks from Todoist, Asana, Trello, etc.
✓ Guided shutdown routine at end of day
✓ Timeboxing is the core feature
— $20/month is steep
— No free tier
— Can feel like overkill for simple needs
Best for: Dads who want a task list AND a calendar working together.
✓ Todoist tasks sync to Google Calendar as time blocks
✓ Best of both worlds: list view and calendar view
✓ Todoist is $5/month, Google Calendar is free
✓ Works on every device
— Requires using two apps
— Sync can have a slight delay
— More setup than a single tool
How to actually time block
The system is simpler than the apps make it seem:
Every evening, plan tomorrow. Look at your calendar. See what's already booked (meetings, school pickup, etc.). In the open slots, place blocks for the things you need to do. Be specific. Not "work on project" but "write intro section of proposal."
Color code by life area. This lets you see at a glance if your day is balanced or if work is eating everything. If your calendar is all one color, something's off.
Protect the blocks. When the block says "side hustle work 9-10pm," that's what you do from 9-10pm. Not email. Not scrolling. Not "just one quick thing." The block is a promise to yourself.
Include non-work blocks. Block "dinner with family" and "bedtime routine" the same way you block meetings. This protects family time from work creep. If someone tries to schedule over it, the calendar shows you're busy. Because you are.
Start with Google Calendar tonight. Plan tomorrow. See how it feels. If you want more automation after a week, try Reclaim. That's the progression.
About these links: Dadzilluh may earn a commission when you sign up through links on this page. Rankings use Dad Math. Prices accurate as of March 2026.