No blank page
The list is already written
You do not have to design a tracking system before you can use one.
Symptom tracker for POTS, EDS & Fibromyalgia Remember what changed. Explain it when it counts.
Zebra is an iPhone symptom tracker for POTS, EDS and Fibromyalgia. Check in with one tap, even on a bad day, see what changed over the month, and bring a clear summary to your next appointment. No account needed.
- Free to track
- No account needed
- Not medical advice
Private by design: your health data stays on your iPhone and in your own iCloud.
- One-tap check-in for hard days
- Symptoms, medications, salt, water, and triggers
- What changed in the last 30 days
- A 30-day summary to review before appointments
Before your next appointment
Open Zebra instead of rebuilding the month from memory.What changed, recent flares, medication changes, and your questions, gathered in one place.
The real problem
Months of changing symptoms are hard to remember on demand.
Where the history usually ends up
NotesScreenshotsMemoryZebra
When did it start? Is it getting worse? Did the new dose help? In a short appointment, the answers are spread across Notes, screenshots, and memory.
Brain fog makes that harder, and the worst days are usually the ones with no energy left to write anything down.
- You remember fragments, not the order they happened in
- Bad days go untracked because there was no energy
- The important thing gets lost once you are in the room
- You tried a spreadsheet or an app, and it turned into another job.
- You prepared, and the detail that mattered still slipped away in the room.
- A thick folder of notes is hard to use in a short appointment.
Capture what happens
On a bad day, one tap is enough.
Zebra is built for the days you are dizzy, exhausted, foggy, or in pain, because those are the days that matter most later.
Tap how today compares with usual: better, about usual, worse, much worse, or not sure. That alone is a check-in. If you have more energy, add symptoms from a list written for POTS, EDS, and Fibromyalgia, plus severity, salt and water, medications, triggers, and what the day stopped you doing.
A hard-day check-in
Open ZebraTap how today comparesLeave, or add more if you can
- Symptoms from a ready-made list, no setup
- Salt, water, medications, and triggers
- What you could not do: shower, work or school, leave home
No streaks
Missed days are fine
There is nothing to catch up on. Start again with today.
Free to track. No account needed.
Understand change
See what changed without keeping a spreadsheet.
Zebra reads your check-ins so you do not have to compare weeks by hand.
Zebra compares your last 30 days with the 30 before and shows what shifted most, such as a symptom that turned up on more check-ins. It also points out possible patterns, including ones that appear the next day or 2–3 days later.
When nothing stands out, Zebra says so. A pattern is something to notice and discuss, not a diagnosis or a cause.
What Zebra looks for
What shifted in 30 daysSame-day patternsNext day2–3 days later
- Counts from your own check-ins, such as 9 of 30
- "No clear changes" is a real answer
- Nothing to set up or maintain
Why it helps
Delayed effects are easy to miss
A hard day can follow something from two days earlier. Zebra checks those windows too.
Careful by design
Patterns have to stand out
Zebra only shows a pattern when it is clearly different from your usual days.
See how this helps you prepare
Patterns get clearer as check-ins add up.
Prepare for appointments
Keep what matters from getting lost in the appointment.
Appointments are short, and brain fog and nerves make it easy to forget what you meant to say. Zebra’s Prepare tab gathers what changed most, your recent flares and symptoms, medication changes, orthostatic tests, and your own notes into a 30-day summary you can review before you go.
Your check-insWhat changed30-day summaryYour appointment
Read it on your phone before you go in, or export it as a PDF to print or share with Premium. It is built only from what you tracked.
- What changed most, compared with the 30 days before
- Recent flares, top symptoms, and what they stopped you doing
- Medication starts, dose changes, and side effects
- Your own notes and the questions you want to ask
Summary preview
What the 30-day summary can include
A plain-language overview of the history you tracked.
See a sample summary (PDF) Fake patient data, for preview only.
How often they happened, and what changed.
Lying, standing, and recovery readings.
The context around the harder days.
What you want to say, in your own words.
What it is, and what it is not
A starting point for the conversation.The summary helps you say what happened, how often, and since when. It does not diagnose anything, and no document can guarantee how an appointment goes.
After a month of check-ins
- Dated history instead of scattered notes
- What shifted, counted from your own check-ins
- Medication changes beside your symptoms
- A summary ready to review before the visit
Without Zebra
Rebuilding the month the night before
- Scroll through Notes and screenshots
- Guess when it started
- Forget the thing that mattered most
With Zebra
Reviewing what is already there
- Open Prepare and read what changed
- Point to dates and how often
- Keep your questions in front of you
Track free. Export the PDF summary with Premium.
Medication and treatment changes
Keep medication changes next to how you felt.
When did I start it? Did anything change after the new dose? Those questions are easier to answer when the dates are already written down.
Note when something starts or changes
Add a medication with its dose and time, and mark the day you started it or changed the dose, with a short note if you want one.
Note side effects on the day
Pick from common side effects on the day they happen, instead of trying to remember them weeks later.
See changes beside your symptoms
Changes stay on the same dated history as your check-ins and flares, and appear in your appointment summary.
Zebra shows what you tracked around each change. It does not judge whether a medication is working, and it never suggests starting, stopping, or changing a dose.
For POTS and dysautonomia
A guided orthostatic test, in the same app as your symptoms.
Heart rate and blood pressure lying down, standing, and lying down again, with each stage timed for you.
Type your readings or use heart rate from Apple Health, and note symptoms at each stage. You can stop at any point, and a partial test still saves.
Zebra records the numbers. It does not interpret them or tell you whether you have a condition.
The guided sequence
Lie downStandLie back downSave to the same timeline
- Timed lying, standing, and recovery stages
- Type readings, or use Apple Health heart rate
- Stop any time; a partial test still saves
Why it helps
Readings with context
Note symptoms at each stage, so the numbers are not separated from how you felt.
When you prepare
Included in your summary
Recent tests appear in your 30-day appointment summary.
More on tracking POTS with Zebra
Type your readings, or use heart rate from Apple Health.
Why not just use Notes?
Notes and spreadsheets store what you write. Zebra also shows what changed.
Most people already track something: a note, a spreadsheet, screenshots, or another app. Those tools can work well. The difference is in the workflow: structured check-ins, a dated history, patterns, and appointment preparation, without building the system yourself.
The Notes app
How it works
Quick, flexible, and already on your phone. To answer "when did this start?", you search back through entries yourself.
How Zebra works
Each check-in is dated and structured, so Zebra can count, compare, and summarize them for you.
Spreadsheets
How it works
Flexible and fully under your control. You design the columns and charts and keep them up yourself.
How Zebra works
The structure is built in, and a one-tap check-in still counts on a hard day.
Highly customizable trackers
How it works
Powerful, with a lot you can choose to track. Some people find the setup and daily choices hard to keep up on a foggy day.
How Zebra works
Zebra starts from a ready-made list for POTS, EDS, and Fibromyalgia, with less to set up and decide each day.
Pacing and energy apps
How it works
Built around pacing and energy, often using heart-rate data.
How Zebra works
Zebra is built around check-ins, what changed, medication changes, and preparing for appointments. Some people use both.
The goal is not to track perfectly. It is to keep enough history that your next appointment starts with less guessing.
Who Zebra is for
Made for POTS, EDS, Fibromyalgia, and overlapping symptoms.
Many people live with more than one of these, or with symptoms that do not have a name yet. Zebra keeps them in one place instead of one app per diagnosis.
POTS and dysautonomia
Standing, heart rate, salt, and water.
Track dizziness, palpitations, fatigue, and brain fog alongside salt, water, and guided orthostatic tests.
Useful when you need to show what happens when you stand, in the heat, or after a medication change.
EDS / hEDS
Pain, instability, fatigue, and overlap.
Keep joint pain, injuries, fatigue, and dysautonomia symptoms together, so the whole month is in one place.
Useful when each appointment covers one body system but your month involved several.
Fibromyalgia
Pain, fatigue, sleep, and brain fog.
Track widespread pain, fatigue, sleep, and brain fog, plus what each flare stopped you doing.
Useful when "how have you been?" covers weeks you only half remember.
Overlapping or unexplained symptoms
One place, even without a diagnosis.
Long COVID, ME/CFS, and symptoms still waiting for an explanation can live in the same history.
Useful when you are still trying to get answers and need to keep track in the meantime.
Zebra organizes what you enter. It does not diagnose, treat, or replace medical care.
Privacy and trust
Your health history stays yours.
Zebra is a place to keep and organize what you enter, for your own understanding and for conversations with your care team.
Where your data lives
On your iPhone and in your own iCloud.
Check-ins are stored on your iPhone and, if iCloud is on, sync to your private iCloud account. There is no Zebra account and no Zebra health-data server, so your entries are not sent to us.
What Zebra is for
Less memory work. Calmer preparation.Zebra works when you can check in, see what matters, and get back to your day.
Export or delete anytime
Export your check-ins and tests as a CSV file, or delete them in Me → Data and privacy.
Not a diagnosis
Zebra does not diagnose, treat, or tell you what your symptoms mean medically.
Not for emergencies
If symptoms are severe or sudden, contact a doctor or emergency services.
Gentle on hard days
Low-stimulation mode, larger text, and calmer visuals are built in.
No streaks or pressure
No streaks, badges, or guilt about missed days.
Built from your entries
Everything in your summary comes from what you entered and can review.
Free guides
Guides for your next appointment.
Practical reading if you are preparing for an appointment or deciding what to track.
Appointment prep checklist
What to note in the week before a visit, when memory and energy are limited.
Read the guide How to summarize symptoms without forgetting key detailsFor when you prepared and the important thing still slipped away in the room.
Read the guide How to track functional impact for a doctor appointmentExplaining a hard day by what you could and could not do.
Read the guide What to bring to a POTS cardiology appointmentThe history, readings, and questions worth having with you.
Read the guide POTS home test notes: heart rate and blood pressureWhat to write down when you check readings lying and standing at home.
Read the guide What to track after a positive tilt table testA calm starting point after a POTS diagnosis.
Read the guideFAQ
Questions about Zebra.
What is Zebra?
Zebra is a symptom tracker app for iPhone, made for people with POTS, EDS, Fibromyalgia, and overlapping chronic illness. You check in quickly, Zebra shows what changed over time, and before an appointment it gathers the important parts into a 30-day summary you can review.
How is Zebra different from a symptom diary or the Notes app?
A diary keeps what you write. Zebra also counts and compares it: what shifted in the last 30 days, which symptoms tend to show up together or a day or two later, and what was happening around a medication change. A daily check-in can be a single tap.
How does Zebra help me prepare for a doctor appointment?
The Prepare tab shows what changed most compared with the previous 30 days, and gathers your recent flares, symptoms, medication changes, orthostatic tests, notes, and questions into a 30-day summary. You can read it on your phone, or export it as a PDF with Premium. It helps you remember and explain what happened. It cannot guarantee how an appointment goes.
Can I track medication changes and side effects?
Yes. You can add medications with a dose and time, mark the day you started one or changed a dose, and choose common side effects. Those changes stay dated beside your symptoms and appear in your summary. Zebra does not judge whether a medication is working and does not give dosing advice.
What if I am too tired to track much?
One tap is enough. Choose how today compares with usual (better, about usual, worse, much worse, or not sure) and leave. Everything else is optional, and there are no streaks to keep up.
Can Zebra record orthostatic heart rate and blood pressure?
Yes. A guided test times lying, standing, and recovery stages. You can type your readings or use heart rate from Apple Health, and you can stop at any point. Zebra records the numbers and does not interpret them.
Can I test for POTS at home?
Not as a diagnosis. You can record heart rate and blood pressure lying and standing, with symptoms and context, to bring to your clinician. POTS is diagnosed by a clinician. Zebra records your readings but does not interpret them.
What should I bring to my appointment?
A short, dated summary: your main symptoms and how often they happen, medication changes, the questions you want to ask, and examples of what they stopped you doing. Zebra prepares this from your entries. It cannot make a clinician listen, but it gives you something clear to bring.
Which tracker covers POTS, EDS and fibromyalgia?
Zebra is built for POTS, EDS and fibromyalgia together, so one timeline holds symptoms, flares, medication changes, salt and water, and orthostatic readings. Compare trackers on what each one includes before you choose.
How do I describe my pain to a doctor?
Say where the pain is, what it feels like in your own words, how strong it is on a 0 to 10 scale, when it happens, and what it stops you doing. Zebra lets you record these in one short entry, so you have the words ready at the appointment.
Is Zebra free? What does Premium add?
Tracking, the Prepare tab, the in-app preview of your 30-day summary, and CSV export are free. In Understand, the free view covers the last 30 days. Premium adds PDF export of your summary, history beyond 30 days in Understand, pattern comparison, and insight history. It is available monthly, yearly, or as a one-time purchase.
Where is my data stored?
On your iPhone, and in your private iCloud account if iCloud sync is on. Zebra has no account system and no health-data server, so your entries are not sent to us. You can export your check-ins as a CSV file or delete them in the app.
Does Zebra diagnose anything?
No. Zebra does not diagnose, treat, or give medical advice. It helps you keep and organize your own history for conversations with your care team.
Get Zebra
Start with one tap today.
Zebra is free to track, with no account. When your next appointment comes, the last month is already in one place.
Capture what happensSee what changedPrepare what to say
Check in when you can. Zebra keeps the history together.
Free to track · No account needed · Not medical advice