Kasane
A mother leaning on the kitchen counter with her morning coffee, her husband and son laughing at the table behind her. A mother pouring water for her daughter, who laughs over a bowl of oatmeal. A father on the sofa with his son, wrapped in a blanket and grinning over a piece of toast. A mother kicking a ball around the backyard with her two kids under a big oak tree. A father and his son making tacos together at a terrazzo kitchen counter. A mother reading a picture book in bed with her two young kids.

The health journal for your family.

Keep everything in one place, write it together with the people who help, and find what makes you feel better. Coming soon to iPhone.

Join the betaAlready testing? Start here

What would you like to figure out?

The page follows one person’s story. Switch anytime.

Health happens in pieces.

Then it helps you see what might be behind the afternoon crash.

  • 8,240 steps
  • Fourth coffee, at 3 pm
  • “That 3 pm dip again.”
  • LDL 112 mg/dL · Sep 28 labs
  • Dragging by 2 pm again
  • Lab report, 4 pages
  • Oats with banana, coffee
  • Lights out at 11:40
  • Mia, 100.4°F at 2 am
  • Vitamin D, 1,000 IU
  • Resting heart rate 60
  • Sat at a desk all day
  • Checkup Tuesday, 9:30
  • Yoga, 30 min
  • “Dad says his knee feels better.”

Everything in one place.

Write a note the way you’d text a friend. Sleep, steps and workouts come in from Apple Health, and your labs and documents sit right beside them.

  1. 6:48 AMApple HealthSlept 7 h 11 min
  2. 7:23 AMMealCereal and coffee
  3. 12:15 PMRoutineLast coffee by noon, done
  4. 5:30 PMRoutineWalk around the block, done
Marcus’s Journal for Friday, October 2: sleep from Apple Health, breakfast, and his last coffee by noon marked done.

Write it together.

Your kid’s journal belongs to everyone who looks after them. Share it with your partner or another caregiver, and you each add notes, photos, labs and documents to the same journal, from your own phones.

When your daughter clocks 102°F at 3 am and you give her children’s Tylenol, whoever was up writes it down, so the morning shift knows. Your own journal stays yours, and you choose what to share.

Jordan’s Today screen, with Mia under Family and what she’s testing this week.
Mia’s journal: 102°F at 3:05 am, children’s Tylenol, back to sleep by 3:40, and tonight’s bedtime routine.

Helping a parent with complex care?

Keep their medications, blood pressure readings and visit notes in one journal, shared with the siblings who help.

Robert’s journal, kept by his daughter: morning pills and the home blood pressure check marked done, and a note reading BP 132/80, pulse 60 on the home cuff.

Find what helps you feel better.

Turn a question into one small change. Kasane keeps track while you try it, then lays the days side by side so you can see what changed.

  1. Get curious about what’s going on.

    Marcus has been dragging by 2 pm for months, and his August blood work came back normal. He asks why in his own words, and Kasane guides the investigation: what his journal already shows, and what might be behind it.

    Marcus’s hunch: maybe afternoon coffee is cutting into his sleep.

    Marcus’s question, Tired all the time, with his experiment: last coffee by noon, day 4 of 14.

  2. Try one thing.

    For two weeks, his last coffee is by noon. Each afternoon Kasane asks one thing, “Tired all the time today?”, and he taps none, a little, or a lot.

    Marcus’s Today screen on day 4 of 14 of last coffee by noon.

  3. Look back, then decide.

    Headaches the first three days, then about the same: tired on 12 of 14 afternoons, 10 of 12 before. He gives it two more weeks, past the caffeine withdrawal, and brings his notes to his follow-up.

    Read the Guide behind this story: Tired all the time but your blood work is normal? What to track next

    The look-back for last coffee by noon, marked Not enough to tell: tired on 12 of 14 afternoons, 10 of 12 before.

Your journal goes
where you go.

Your journal lives on your iPhone and in your own iCloud. You choose where to take it next.

  • Open a day.

    Read or edit your notes in any text app.

  • Bring your notes.

    Print or share a question for your next appointment.

  • Ask your own AI.

    Share your files with ChatGPT or Claude, and ask it to get you ready for a checkup.

Your Kasane folder

iCloud Drive · Files on iPhone · Finder on Mac

  • Friday’s journaljournal/2026/2026-10-02.md
  • Marcus’s question: Tired all the timeinvestigations/tired-all-the-time.md
  • Mia’s journalfamily/mia-4b1e9c/
  • Labs and documentsrecords/

Plain Markdown. Ready for your agent.

AGENTS.md teaches agents the format and rules. They can read your files and add notes that appear in Kasane.

Apple Health values and routine blocks stay app-owned.

Help us shape 3.0.

New to Kasane?

Join the beta list below, and we’ll invite you to try Kasane 3.0 on iPhone through TestFlight.

Join the beta

Already testing?

Open TestFlight for the latest build. Write a note, revisit a day, explore a question, then tell us where it helps and where it gets in your way.

Share feedback

What’s next

Shared journals for the whole family, with notes, photos, labs and documents that everyone who helps can add to.

Join the Kasane 3.0 beta.

We’ll email you when there’s a spot to try it on iPhone.