Not the hours in a day, but the energy in them
Here's the paradox: we plan our day as if all 16 waking hours were the same. But the morning after bad sleep and the morning after real recovery belong to two different people with different capacity. A to-do list doesn't know that.
Every planner starts from time: here are the slots, fill them. Pulse starts from a different question — how much energy do you have today, and where will it honestly stretch? Not "will I have time", but "will I have the capacity".
Why not just use an existing tool
Calendars know what's scheduled, but not what state you're in. Task managers know your list, but not your capacity. Sleep trackers and wearables know about recovery, but nothing about your day and plans. Health apps show charts, but don't turn them into a decision about what to do right now.
The market isn't empty — Oura, Whoop, Apple Health, dozens of planners. But each answers its own piece. I couldn't find a tool that brings sleep, activity, mood, weather and behavior together into one clear energy score and a realistic day plan.
Burnout became normal, and data became available
The pace went up, the line between work and life blurred, and chronic sleep debt and background stress became ordinary. We keep planning for the maximum and are surprised there's nothing left by evening.
Meanwhile we have more data about ourselves than ever: wearables, phones, Health Connect and Apple Health. One thing was missing — a layer that turns those signals into a calm, human decision instead of yet another dashboard of charts.
Why a single magic score is a bad idea
Bad: "Readiness 61%. Energy 58%. Have a great day."
Good: "Your energy is below usual today: you slept 1.5 hours less, HRV dipped, and a cold front is coming tomorrow. So this morning — one important block, better skip heavy meetings, and recovery is planned for the afternoon."
If an app can't explain why it reached a conclusion, it isn't an assistant — it's a generator of pretty numbers. In Pulse, any Energy Score unfolds into the factors behind it, and your day plan always shows why it looks the way it does.
An assistant that steps in when it matters
The Pulse assistant is the AI coach inside the app. To me, agency isn't "a wrapper around an LLM" — it's being proactive: a helper that sees your state on its own and speaks up only when it matters — in the morning, in the evening, at the end of the week, and when the day goes off track.
Pulse notices a dip early, gently warns you, suggests a recovery or focus practice and helps you reshape the plan. But you decide: the plan changes only when you tap "Apply". A good coach doesn't give orders — it stays close and steps in when it's really needed.
One signal lies. A series tells the truth
On its own, every signal is weak. Sleep only speaks about the night. Steps — about activity. A mood check-in is subjective. Weather is just weather. Any of them alone can easily mislead.
Together they add up to an honest picture: here's accumulated sleep debt, here's stress on top of load, here's an energy peak in the first half of the day, here's the weather factor. And Pulse doesn't make up the links between them — it tests them against chance and shows how strong they are.
You decide what to share
Health data is the most personal thing there is. That's why consent is asked separately for each type of data, and access to Health Connect, Apple Health and wearables can be revoked at any time.
Sync between your devices is end-to-end encrypted: the key is created on your phone and our server never sees it. AI requests go through our server without your identifiers. Everything Pulse remembers about you is on one screen — correct it or make it forget. We don't sell data and we don't show ads.
A plan that respects your capacity
A typical plan is ambition on paper: a list that believes you'll be equally fresh at 9 a.m. and at 6 p.m. On low days, a plan like that doesn't motivate you — it finishes you off.
Pulse builds your plan from the energy forecast: more ambitious on strong days, gentler on weak ones, important tasks go into peaks, and recovery is planned ahead rather than "if there's time left". And if something didn't work out, that's not a failure: Pulse asks what got in the way and adjusts the next step.
Wearables help, but aren't required
With Oura or a watch that writes to Health Connect and Apple Health, the score is more accurate: sleep, heart rate, HRV and activity give a reliable base. But I deliberately made the product work without them.
Without gadgets, Pulse relies on check-ins, behavior, weather and chronotype. The barrier to entry should be low: everyone has energy, not everyone has a wearable.
History makes the picture reliable
You can't build a personal baseline from a single day. A week of steady signals is already worth more. After a month, Pulse notices your patterns and anomalies — and tells you honestly which are solid and which are only emerging. The longer your history, the sharper the forecasts and personal recommendations.
Why this particular combination
Why put sleep, activity, mood, stress, weather, a day plan and a coach into one app instead of five separate ones? Because what matters most is between them.
Sleep affects energy, energy affects how much you can actually handle, load affects stress, stress affects sleep. Split across apps, those links get lost. Brought together, they become an explainable day and an honest plan.
Part of the DuoHuman story
Pulse is part of a bigger story called DuoHuman: a personal ecosystem where the different layers of life finally see each other.
What does a "good day" look like for you in numbers? What signals are missing for you to trust a plan? Write to us — let's talk.