01
Say how it went
Eight optional steps. A partial check-in still counts.
iPhone and iPad · Free · Private
Track your fibromyalgia symptoms.
Tend is a private journal for pain, fatigue, brain fog, sleep, waking refreshed, mood, pain locations, and notes. It looks for patterns across weeks of your own record, then gathers them with your medications, labs, and questions into one page for your next appointment.
Every field optionalOne page for your doctorNo ads or health-data sales
Every field optionalA short daily check-in
One pageReady for your appointment
No adsHealth data is not sold
How it works
02
Weeks add up
Tend stays silent until your record supports a pattern.
03
Bring the letter
Your recent record, gathered before you go.
Everything Tend records
Nothing to set up Skipped stays skipped Silent until it is sure
An illustration of a Patterns card, not your data.
Tend records pain, fatigue, fog, sleep, mood, waking refreshed, pain locations, flares, morning, afternoon, evening, medications, supplements, labs, visits, questions, the night before, practices, movement, pressure, weather, pacing.
One check-in, the whole day
Pain
& where it lives
A body map, front and back
- 0 to 10, or skipped
- Painted on a body you can see
- Morning, afternoon, evening
- Today's peak
- Which side, and how far it spread
Fatigue
& fog
Two scales, both optional
- How much you had in you
- How hard reading was
- Fog Mode, when it is bad
- Spoken entries on the worst days
- What you managed anyway
Sleep
& waking refreshed
Two questions, both optional
- How last night's sleep felt
- Whether you woke up refreshed
- Apple Health hours as a quiet hint
- Your answer stays separate from Health data
- Left blank stays blank
Mood
& your notes
One scale and an optional note
- How your mood felt
- Anything you want to remember
- More than one check-in per day
- A day can hold two feelings
- Left blank stays blank
Medications
labs & visits
The whole paper trail
- Doses, and whether you took them
- Supplements alongside them
- Lab results, with their dates
- Appointments, past and next
- The questions you meant to ask
+More
All of it in
one private record
Plus, take it with you
Read it, print it, save a PDF, or hand it over at the desk.
What the app says to you
Every line written for a bad day.
“Check-in saved.”
“Your flare plan and support options are below.”
“Symptoms stayed about the same today.”
“Gently now. Nothing to catch up on.”
“Symptoms peaked in the afternoon and eased.”
“Use your plan, reduce demands, or contact someone you trust.”
“You recorded stronger symptoms.”
“How are you feeling today?”
These are lines the app itself says, not customer quotes or reviews.
What the app actually looks like
TodayDaily symptoms and check-in
PatternsChanges across your weeks
CareThe letter for your visitCaptured from the app running its sample record, which is why each screen says so.
Built for
the worst day
Big targets. Few choices. One tap for everything. Nothing that punishes you for a week you could not fill in.
Apple HealthKitMET Norway
Fog Mode collapses the whole app to one thing per screen
Every field is optional, and a blank never becomes a zero
Not your average tracker
TendA symptom score
Daily check-in
8 optional steps
1 score
A skipped answer stays missing
Says how many days a finding rests on
More than one moment in a day
A body map you paint
Speak it instead of typing it
Medications, labs, visits, questions
A letter to bring to the appointment
Dims itself after sunset
Nothing to break, no streak to keep
No ads or sale of health data
The right-hand column is a category, not a product: what a single daily 0 to 10 rating can hold, next to what a record can.
Core tracking and doctor summaries are free
Your own record should not be rented back to you.
iPhone and iPad · private
Tend
Freeon the App Store
No ads or in-app purchases today. Core tracking and doctor summaries stay free.
Download on the App Store- A short daily check-in, every field optional
- Speak an entry instead of typing it
- A body map you paint, front and back
- More than one moment in a day
- Flares, with a mode built for them
- Medications, supplements, labs and visits
- The questions you meant to ask
- Patterns drawn from your own record
- The doctor's letter, readable and printable
- Local weather and pressure, if you want it
- Export or delete everything, any time
Nothing is counting.
No streaks, no rings, no red for a hard day.
Skipped stays skipped.
A blank answer stays missing. It never becomes a zero.
Silent until it is sure.
A finding waits for enough answered days, then says how many.
Frequently asked questions
What is Tend?
Tend is a private iPhone and iPad app for people living with fibromyalgia. It combines an optional daily check-in, records for medications, labs, visits and questions, conservative summaries of your own record over time, and a printable letter to bring to a doctor's appointment.
Does Tend collect or upload any data?
Tend requires Apple or Google sign-in and syncs your record to your Tend account. Beginning with Tend 1.0.1 build 8, a version-specific allowlist of product actions is linked to the account UUID in PostHog, but answers, notes, health details, email, name, location and free text are excluded. There is no advertising or cross-app tracking. The public website separately counts limited, anonymous, cookieless pageviews. Optional weather sends a rounded approximate location and IP directly to MET Norway and Open-Meteo, never health data. You can export or delete your record from Settings at any time.
What does a check-in involve?
You can record pain, fatigue, brain fog, sleep, whether you woke refreshed, mood, pain locations, and an optional note. Every field is optional, so a partial check-in still counts. On a foggy day, you can speak the note instead of typing it.
Does Tend give medical advice?
No. Tend is a self-tracking tool. It records what you enter and shows you conservative summaries of your own record. It does not diagnose or treat anything, it is not a medical device, and it is not a substitute for care from your own doctor.
What does Tend do with the patterns it shows?
Every summary is computed on your iPhone from your own record: your check-ins and flares, plus Health, weather and Apple Watch data only if you connect them. Skipped answers stay missing rather than counting as zero, and every finding states what it rests on: paired days, recorded flares, or baseline nights. A card stays silent until it has enough. Tend describes association and timing, never cause, and a pattern in your own days is not a diagnosis. The methods page at /methods/how-tend-finds-patterns explains the rules it covers.
How much does Tend cost?
Tend is currently offered at no cost and contains no in-app purchase.