Personal advisory

Fatigo

Fatigue intelligence, in real time.

Now, likely, and where it is heading — not a sleep log.

Fatigo Now on iPhone — current alertness 64, trajectory, and next 12 hours

What sets Fatigo apart

See the number. Then you decide.

Fatigo is a live alertness gauge — not a sleep diary, not a medical device, and not a go / no-go light. The score stays on this iPhone.

Live mark

Not a sleep log.

Now, likely, and where fatigue is heading. One mark you can glance — current, trajectory, and the next twelve hours.

Advisory

You decide.

Advisory only. Fatigo does not tell you to work, drive, or rest. It does not know when you are unsafe. The call is yours.

On-device

On this iPhone.

Scoring is on-device. No account for the core loop. Health is read-only. Export or delete logs in Settings. Nothing sold for ads.

Plus

Body in the number.

Free is a clock. Plus puts Watch heart — HRV and resting HR — in the same mark, every day you wear it.

In the app

Features that earn the glance.

The daily habit is the number. Everything else supports that.

Live Now

Current alertness, how fast it is moving, and a predicted low — from last night, time awake, and the body clock.

Next 12 hours

A trajectory you can scan. Coffee and naps you enter show up here. Not a history of how you slept.

Morning check-in

Two fields: when you woke, hours in bed. Skip it when Plus already has last night from the Watch.

Watch heart

Plus reads HRV and resting heart rate on this iPhone. Last night is automatic when you sleep in the Watch; two fields if it was charging.

Drive and Shift

Plus ride-alongs: the live mark on a trip, and through a night block — pause places, a sleep window, logs. See Drive and Shift. Advisory. You decide.

Wrist and Lock Screen

The mark on Apple Watch and the Lock Screen. Glance, then you decide.

Plus ride-alongs

Drive and Shift.

Two ways the live mark stays with you. Drive is a trip. Shift is a block of work — especially nights. Same advisory number. Not HOS. Not a dispatcher. You decide when to stop, work, or rest.

Drive

The mark on the road.

Start a trip from Now or Watch. The live number comes with you — current, trajectory, and the next twelve hours. A destination is optional. Pause places are estimates. Fatigo does not tell you to pull over.

  • Start or plan. Leave now, or add a later trip. Watch and Lock Screen keep the same mark.
  • Genius brief. Hours, miles, pause windows about every two hours, and whether the trip overlaps the usual body-clock low.
  • Pause places. Optional map stops along the way. A suggestion — you decide.
  • On the road. Wrist and Lock Screen tap if fatigue rises. Glance, then you choose.
  • Travel log. Finished drives keep the mark you had. Export PDF or Excel for yourself — not a workplace or hours-of-service log.

Why it helps The number is in the car with you. Alertness falls as fatigue rises — then you decide the next pause.

Shift

The mark through the night.

Put a work block on the calendar. Now and the next twelve hours stay in view through it. Fatigo can sketch a sleep window around a shift you already know. Not hours-of-service. Not a medical device.

  • Start or plan. Begin now, or add a later day. Coming-up and a finished shift log sit in the same pack.
  • Sleep window. An advisory window before or after the block. A short nap sketch when the gap is tight. You take it or you don’t.
  • Body clock. See if this night overlaps the usual biological-night dip — same engine as Now, on a timeline.
  • Nights occupation. Plus pack for overnight weeks. The night dip and overnight copy lean harder. Still an estimate.
  • Shift log. Tap a finished block for the alertness graph. Personal schedule, not a workplace record.

Why it helps A night is easier to judge when the block, the mark, and a sleep window sit together. You see the stretch coming — then you decide when to rest.

Clock vs Plus

Free is a clock.
Plus is your body.

The free habit is real. Plus puts Watch heart in the same number — and unlocks Drive and Shift.

In this number Clock Plus
What it is Typical wake and time of day Watch heart — HRV and resting HR
Last night You enter wake and hours in bed From the Watch when you sleep in it; two fields if it was charging
Sharp Off On — from your body, not the clock
History 7-day chart 30 and 90-day history
Drive Locked Start or plan a trip, pause places, log, Watch and Lock Screen
Shift Locked Plan a block, sleep window, Nights occupation, shift log
Wrist and Lock Screen — Watch complication and Lock Screen
Price Free forever 7 days free, then yearly. Cancel anytime.

The look.

The same screens you will see in the app.

Now: current 64, falling rapidly toward 15 at 5:10 AM
Now — current, trajectory, and the next twelve hours.
Watch — the same mark on the wrist. Series 11, 46 mm.

Fatigo Plus

Free is a clock.
Plus is your body.

Free: you enter last night each morning. Coffee and naps when they happen. Sharp stays off.

Plus: Watch HRV and resting heart rate in the number every day you wear it. Last night from the Watch when you sleep in it — two fields if it was charging. Drive, Shift, Lock Screen, longer history. Seven days free, then yearly. Cancel anytime in iPhone Settings.