Monday · Errands and admin
Moderate
Calendar
6 hr
Brainwidth
52%
Clear email · Team meeting · Dentist · Plan next week · School pickup · Grocery run · Kids' soccer
Coming soon for iPhone and Apple Watch
Plan your day by mental energy, not just hours.
A planner that scores every event and task by the energy it takes, so you can see a heavy day coming.
- Apple & Google calendars
- No account
- No ads or tracking in the app
Plan a Tuesday
Each score is a share of a full day’s energy.
Daily Capacity
7 items · 6 hr 30 min booked
Good
72%
Good day at 72%. Enough to get real work done, with some slack left.
Why it matters
Same six hours.
Completely different day.
Your calendar shows your time. Brainwidth shows your bandwidth.
Thursday · High stakes
Full
Calendar
6 hr
Brainwidth
114%
Deep work block · 1:1 with manager · Client pitch · Tough talk · Side project
marks a full day (100%).
How it works
Three steps. No new calendar.
- 1
Bring in your calendars.
Apple Calendar, Reminders, Google Calendar and Google Tasks. Synced both ways, from day one.
Apple Calendar
Two-wayReminders
Two-wayGoogle Calendar
Two-wayGoogle Tasks
Two-way
- 2
Score what drains you.
Slide from 0 to 100, or let Auto Estimate suggest a number. Anything unscored doesn’t count. What’s a Brainwidth Score?
Edit Event
Client presentation · 1 hr
30%Heavy· uses 30% of today’s capacity - 3
Know when to push, and when to rest.
Scores add up to your day, week and month. Past 100%? Move one heavy thing.
A heavy day
Daily Capacity
Thursday
Full
114%
A light day
Daily Capacity
Friday
Light
28%
Be first to try it.
And everything else
The rest of your day lives here too.
Private by design
Your schedule stays yours.
What drains you is personal. It stays on your iPhone.
No account to create
Open the app and start.
Kept on your iPhone
Scores, routines and goals stay on your device.
On-device intelligence
Auto Estimate runs on your iPhone, not a server.
No ads, no tracking
No ads, analytics or trackers in the app.
How is this different from my calendar?
Your calendar shows when things happen. Brainwidth adds how much each one takes out of you, so an overloaded day shows up while it’s still a plan.
Isn’t scoring everything more work?
You only score what drains you. Unscored items don’t count, and Auto Estimate can suggest a number for you.
What number should I give something?
100 is a full day. A quick email check is about 2 to 5, a one-hour meeting 10 to 18, and a big presentation 25 to 35.
What do the five levels mean?
Light is under 30%, Moderate 30 to 60%, Good 60 to 90%, Full 90 to 120%, and Over is 120% and up. Aim for Good on most days.
Which devices does Brainwidth run on?
iPhone with iOS 26.2 or later, plus Apple Watch. There’s no iPad, Mac, Android or web version.
Will it be free?
It will be free to download. Whether some features will cost extra is still being decided.
When can I get it?
Soon. Join the list and you’ll get one email when it’s on the App Store.