Work less. Achieve more.
Describe a project, give it hours and a deadline. MyCalendy breaks it into tasks and places each one at the hour your brain is best at that kind of thinking, around your real calendar. When plans change, it re-plans.
No credit card. Cancel anytime. From $9/month after the trial.
1 · Describe
“Q3 report, 6 hours, due Friday.” That is the whole input.
2 · Cally plans
Analysis lands in your Analytical window, the draft in your Creative one, around your meetings.
3 · It adapts
Slip a task, sleep badly, add a meeting: the plan moves with you and tells you why.
Peaks. Valleys. The climb up. The slide down.
But your calendar treats
every hour like it's the same.
Your wave shifts based on your natural rhythm
Scroll to see all chronotypes
Same abilities. Different times.
Your brain. Your rhythm. Your schedule.
Your brain is ready to work all day long.
Just not for the same things.
Morning might be analytical. Afternoon might be creative. Late day might be perfect for emails.
Every hour has an optimal task type—most calendars just ignore this.
My Calendy matches every task to its optimal window.
Work with your brain, not against it
Each task matched to your cognitive rhythm—peaks, valleys, and everything in between
You tell us
"Finish Q4 report by Friday"
8 hours of work needed
We schedule
6 optimized work blocks
Matched to your cognitive peaks
Try it with your own project
Same engine as the app. No signup. Every task comes with its reasoning.
The demo uses a standard profile (up at 7, work 9 to 6) with your morning preference. The app uses yours, your calendar and how you slept.
It adapts when life happens
A meeting runs over, a task slips, a day disappears. MyCalendy re-plans automatically, but not into the next empty slot. Each task moves to the next window where your brain is actually good at that kind of work, your deadlines are re-checked, and anything now at risk is flagged before it becomes a problem. You see what moved and why. Nothing quietly falls off the calendar.
The task keeps its identity and duration. Only what has to move, moves, and it lands in a window that scores at least as well as the one you lost.
If the remaining work no longer fits before the due date, you hear it now, with the numbers, instead of on the day it's due.
Every change comes with a reason and an undo. Pin any task and Cally schedules around it instead.
Built around how you actually feel today
A twenty-second check-in each morning, how you slept and how you feel, reshapes the day. Rough night? Demanding work shifts to a later window and the focus budget tightens. Great night? Deep work moves to the front. Breaks are placed, not hoped for, and your wind-down hour is protected, because tomorrow's peak is built tonight.
Albulescu et al. 2022, micro-breaks Bennett et al. 2018, recovery Masicampo & Baumeister 2011, plans Breines & Chen 2012, self-compassion
The morning check-in
Good morning, Sam. How did you sleep?
Slept 6.5 h and it was rough · ok · good
Energy right now
Today I have room for a full day · a lighter day · just the essentials
Plan my day →
Lighter day set. Kept 3 tasks, moved 4 to later this week. Nothing is lost.
Your Analytical peak looks like 9:40 to 11:20.
Teams that peak together
Peak builds a cognitive map of your team across time zones. The meeting finder proposes times inside everyone's collaborative window and outside their deep-work peaks, and rotates who takes the off-peak slot so it is never the same person. Task assignment considers who is strongest at analytical, creative or strategic work, and when. Progress keeps moving while half the team sleeps.
Each member's peaks across their working hours, in one view. Gaps and complementary pairs show where a handoff makes the day longer without making anyone's day longer.
Ranked times with a plain cost per person. Sync inside collaborative windows, decisions when strategic thinking is high, and fairness across time zones built in.
Pool tasks go to the person strongest at that kind of work, at the hour they are strongest, with weekly capacity respected. Anyone can claim from the pool.
Privacy is the default: teammates see the hours you work and which abilities peak then. Never when you sleep, never your energy, never your calendar details.
See how Peak works for teamsWhat the research supports
modelled cognitive fit when start times are individualised
versus 70 to 81 for any single fixed start time, in a modelled study of 190 undergraduates.
Evans, Kelley & Kelley 2017, Frontiers in Human Neuroscienceeffect of if-then plans on reaching a goal
across 94 tests. Deciding when, where and how you will do something is most of the battle. A schedule is that decision, made for you.
Gollwitzer & Sheeran 2006, meta-analysisU.S. workers call their job very or extremely stressful
and lack of control over work is one of the organisational stressors NIOSH names. Control over when you do your hardest thinking is a lever you can pull.
NIOSH publication 99-101Where the evidence is thin, we say so. The “synchrony effect”, doing better at your preferred time of day, shows up in about 45% of adult studies, mostly for attention and memory, and not at all in many others. That is why Cally learns your rhythm from your own check-ins and ratings instead of assuming a population average applies to you.
2025 systematic review, Chronobiology International ·Read the science page, including the studies that disagree
Plan the work once. Let it move when life does. End the day with something finished and something left in the tank.
No credit card. Cancel anytime.
A note from the founder
MyCalendy started with a plain observation: the same hour is not the same for everyone, and it is not the same for you every day. Calendars pretend otherwise. We built a scheduler that reads the research, cites it, and then gets out of the way, moving your work to where your mind actually is and telling you why. If it ever feels like it is scheduling against you, tell us. That is the one thing it must never do.
Michael, founder · michael@mycalendy.fun