01
Install the Chrome extension
A lightweight extension sits in your browser. No accounts required to start — just install and it begins.
Get the extension →You already know your best hours exist. Now find them.
Energy Check-In tracks how you feel every 90 minutes and builds a map of when your mind actually works best. Free, private, and takes 5 seconds per check-in.
⚡ Works in your browser🔒 Your data stays yoursFree forever for personal use
See how it works ↓Sample heatmap
A week of energy
demo
6a
9a
12p
3p
6p
Mon
Tue
Wed
Thu
Fri
Sat
Sun
red = low · amber = okay · green = peak
Your map builds over time.
Three steps to understanding your energy
02
Rate your energy every 90 minutes
A small card appears in the corner of your screen. Tap a score from 1–5 and optionally tag what you're doing. Done in under 5 seconds.
03
Discover when you're actually at your best
After a few days, your personal energy heatmap appears. You'll see exactly which hours and days your focus, creativity, and output are highest.
Most users see a clear pattern emerge within 3–5 days of check-ins.
What Energy Check-In shows you
Your real peak hours
Not when productivity culture says you should be sharp — when you actually are. Protect those hours for your most important work.
What drains you fastest
See which activities — meetings, admin, shallow tasks — correlate with your lowest energy scores. Redesign your day around the data.
Day-by-day patterns
Monday energy vs Friday energy. Morning person or afternoon person. Your heatmap answers these questions with your own data, not generic advice.
When to stop pushing
Recognise the difference between a productive slump and genuine depletion. Knowing when to rest is as valuable as knowing when to work.
Built for people who work with their minds
Knowledge workers with packed calendars
If your day is a blur of meetings, messages, and context-switching, this shows you where the actual focus windows are — and how short they've become.
Freelancers and independent professionals
When you control your schedule, you can design it around your energy. Most people guess at when they work best. This tells you.
Anyone who's tried productivity systems and found them too rigid
Energy Check-In doesn't tell you what to do or when to do it. It just gives you data about yourself. What you do with it is entirely up to you.
Common questions
Your peak hours are already there. You just haven't mapped them yet.
Most people spend years guessing at when they work best. Energy Check-In gives you the data in days. Free to start, no credit card required.
Takes 2 minutes to set up. Works on any website.