Question 1

What is Daygrain?

Accepted Answer

An energy journal. Daygrain connects how you feel, what you do, and what your body tracks — so you can find what drains your fuel, what restores it, and what to change tomorrow. One Fuel score, one main drain, one main refuel, and one practical fix.

Question 2

What is Fuel?

Accepted Answer

Fuel is your main daily energy score. It mixes an Apple Health baseline (sleep, movement, daylight) with your own context — meetings, deep work, stress, coffee, walks, family. The result is one honest read on your energy, not a wall of metrics. Fuel is not a medical score; it is a personal signal built from your body data and daily context.

Question 3

What are drains and refuels?

Accepted Answer

Drains are the things that pull your energy down — like back-to-back morning meetings or late work sessions. Refuels are what bring it back — a walk before your first focus block, daylight, real breaks. Daygrain surfaces your biggest one of each, every day.

Question 4

When do I get my first insight?

Accepted Answer

After about 3 to 7 days, Daygrain spots a pattern you can't easily see yourself — for example, "your fuel drops fastest on days with 3+ meetings before lunch." Then it gives you one practical thing to change tomorrow.

Question 5

Do I need a wearable?

Accepted Answer

No. Daygrain is an energy journal, not a wearable. You can optionally connect Apple Health for a better Fuel baseline (sleep, movement, daylight), but a wearable is never required.

Question 6

When will Daygrain launch on the App Store?

Accepted Answer

Daygrain is in private beta. Join on this page and you will get a single email when the iOS app is ready. No newsletters or spam.

Question 7

Is my data private?

Accepted Answer

Your journal is yours. Daygrain only uses what you log and the optional Apple Health data you approve — to show your Fuel, your drains and refuels, and your insights. We do not sell personal health data.

Find what drains your fueland fix your day.