TodoMaster · timeboxing to-do app
You keep a list, but
nothing moves?
TodoMaster helps you pick three things to finish today and put them on your timetable. Timeboxing from the paper planner, now on your phone and PC.
- Works in the browser, no install
- Connects to Claude & ChatGPT
- 1Finish the proposal draft
- 2Send the weekly report
- 3Call to book the doctor
- Drop off the dry cleaning
☆ sends it to the top three · “Set a time” sends it to the schedule
It came from the paper planner
The three boxes on paper, moved straight onto the screen
Top 3, brain dump, timebox. If you've done it on paper, the first screen already feels familiar. The difference: you move things without an eraser, and it follows you to your phone.


TOP 3 PRIORITIES
Three things to finish today
Pick just three a day. Even on a bad day, one of the three gets done.

BRAIN DUMP
Brain dump
A place to dump whatever comes to mind. Sort it later, choose in the morning.

TIME BOX
Timebox schedule
Drag a task onto a time. Once it has a start time instead of just a deadline, putting it off gets hard.
AI connection · free
Just tell Claude
or ChatGPT to do it
Connect TodoMaster to the AI you already use and you never have to open the app. Asking what's due, adding a task, putting it on the schedule — all of it happens in the chat. You can even jot something down while working in Claude Code.
- 1Copy the address from TodoMaster Settings › Connections
- 2Paste it into the Claude or ChatGPT connector
- 3Ask “what’s on my plate today?”
What’s due this week? Put the most urgent one in tomorrow morning.
TodoMaster · looked up tasks → added to schedule
The proposal is the most urgent. I put “Finish the proposal draft” at 10:00–11:30tomorrow.
There when you need them
Tasks, calendar, notes, routines and teams — in one app
The first screen shows only today. Everything else waits in the menu until you need it.
Calendar
Two-way with Google Calendar. Meetings and tasks on one schedule.
Notes
Meeting notes, ideas. Record your voice and AI tidies it up.
Routines
Pills, workouts, reading. Check them off daily and watch the streak.
Team tasks
See who has what, on a kanban or sticky-note board.
Anywhere
Browser and desktop with no install. Phone via the app. Synced in real time.
I spent years somewhere that threw more than a hundred tasks at me a day. Google Tasks, MS To Do, Notion, paper notebooks — I tried them all. Whatever I used, the list got longer and the day stayed the same. Only one thing changed that: timeboxing.
Frequently asked questions
Is TodoMaster free?
Yes, you can start for free — no credit card, no install. Tasks, notes, timeboxing, routines and calendar sync are all free, while a few advanced features such as finer timebox intervals come with Pro.
What is timeboxing?
Instead of keeping tasks as a mere list, you place each one into a specific block of your daily schedule, deciding “when and for how long” in advance. Because it goes beyond “what” to “when”, vague to-dos become a plan that actually gets executed. It's famously used by successful CEOs like Elon Musk and Bill Gates, and Harvard Business Review ranked it the #1 productivity technique. In TodoMaster, you just drag a task onto the schedule.
How do routines (habits) work?
Register recurring habits — exercise, reading, taking meds — and check them off daily while seeing streaks and completion rates at a glance. It supports many entry types (check, number, scale, time) and sends reminder notifications at your set times so you never forget.
What are AI voice memos?
Record a thought out loud and AI trims the stumbles and filler into a clean note. Catch the idea before it's gone, without typing a word. Works on any device.
Does it sync with Google Calendar?
Yes. It syncs two-way with Google Calendar, so events and task deadlines live on one timeline. Weekly, monthly, and daily calendar views keep everything easy to read.
Can I use it with a team?
Start solo and create a team whenever you need one. The team board offers 4 views — sticky notes, kanban, list, and status — so you see everyone's tasks at a glance, with online presence and “editing” indicators for real-time collaboration.
What devices can I use it on?
Use it right now on the web and desktop with no install, and on mobile through the app. Whatever device you're on, data syncs in real time and push notifications follow.
Is my data safe?
Your data — tasks, notes, and more — is stored safely in your own private space, never exposed to other users. You can sign in easily with your Google account.
Start with three things today
Sign up with Google in 3 seconds. The web version needs no install.