Your health and everyday life in one place.

Kenk.io is a private app for web and iPhone. Sleep, recovery, activity, nutrition, lab results and a journal come together from Apple Health and your own entries – with understandable scores and correlations you can check yourself.

Currently invitation only · non-commercial

Kenk.io in the browser: scores page with overall score and areas — Kenk.io in the browser and on iPhone – with made-up sample data (app in German).

Kenk.io on iPhone: home screen Today — Kenk.io in the browser and on iPhone – with made-up sample data (app in German).

What Kenk.io does

ScoresOverall and per area – every day, with openly documented formulas.
SleepDuration, stages, regularity and sleep need.
RecoveryHRV, resting heart rate, breathing and temperature – also from the Oura ring.
ActivitySteps, training and load over the weeks.
Heart & bodyVO₂max, blood pressure, weight and blood values.
NutritionLog with a barcode, all nutrients against your goals.
Journal & habitsSymptoms, mood and habits in a few taps.
LabResults with reference ranges, history and biological age.
TrendsWhat relates to what – for example alcohol and sleep.

How it works

InvitationAccounts are currently created by invitation only – no password, sign in with a passkey or a code sent by email.
iPhone and webThe iPhone app reads values from Apple Health; entries can be made in the app and on the web.
Your dataStored with AWS in Frankfurt, Germany. Download everything or delete your account at any time. No ads, no tracking.

Request access

Kenk.io is currently invitation only. Tell us briefly who you are and what you would like to use Kenk.io for – we will reply by email.

Your details are only sent as an email to info@kenk.io and are not stored otherwise. More in the privacy notice (German).

About this service

Kenk.io is operated privately by Dominik Kenk. It is not a commercial service and has no public sign-up – accounts are currently by invitation; access can be requested with the form above. Kenk.io sends two kinds of email, both from info@kenk.io: one-time sign-in codes that a user requests on the sign-in page, and a notice to our own address when someone submits the access form – never to the address entered in the form. Questions: info@kenk.io.