When to have your last coffee, and when your energy peaks

When should you stop drinking coffee? Wakira answers with a time of day, worked back from your own bedtime, so it moves when your bedtime does. It's general guidance for an ordinary cup, based on published research on caffeine and sleep, and not a rule. A stronger coffee needs longer. And the afternoon dip? Wakira's energy curve shows when it comes, so you can plan around it.

The same time, wherever you look

Your last-coffee time shows up in the morning summary read aloud, on the "Your day" screen, on the drinks card and, if you want, in a short notification before it passes. On "Your day" it sits beside your peak hours, a good time to nap and your bedtime, so the whole day is on one screen.

Wakira screen, with example data: "Your day", the energy peak from 11:00 to 14:00, coffee by 14:27, a nap at 14:50 and bed at 23:15. — Your dayYour peak, your last coffee, a nap and bedtime, on one page.Example data

Your energy levels through the day

The curve covers your whole day: when you peak, when the afternoon dip comes, and how coffee, meals and naps move it. It's built from a published model of alertness and from how you've slept over the last few nights. It's an estimate, not a measurement: the part behind you is a solid line, the part ahead is dashed.

100 means fully alert; 0 means you can barely keep your eyes open. Until there are enough nights to go on, the curve waits rather than inventing a number.

Next to the figure for right now is a short note on why: the morning's coffee, a meal, a nap, and how much each one moved it. The more coffee and meals you log, the sharper the curve gets.

Wakira screen, with example data: energy now 85, peak today from 10:45 to 14:00, and a finger on the curve at 11:35 reading 99; solid up to now, dashed after. — Energy through the dayTouch the curve to read any hour.Example data

Try it before you decide

Thinking of a coffee after lunch, or a short nap? Pick it and watch the curve change. It's only a preview: nothing is logged or saved. After a nap you'll also see a short dip, the grogginess of waking up.

Wakira screen, with example data: the "Coffee, meal or nap" sheet, "A preview on the curve. Nothing is logged or saved.", with Coffee chosen at 13:30 and the buttons Cancel and Show. — Coffee, meal or napPick a time and see what would change.Example data

A short nap, suggested

When you've been short on sleep this week and your energy is low, Wakira may suggest a twenty-minute nap in the early afternoon. Just a suggestion, and you can turn it off.

Twenty minutes, if it suits you.

Be one of the first

Wakira isn't on Google Play yet. Until it is, we're looking for testers with a phone on Android 12 or later to try it first and tell us honestly what's missing.

Join the first testers

Or write to support@wakira.app

Write from any email address, and just tell us which phone you have and which Google account you use on it.