A symptom tracker that respects your energy envelope
With ME/CFS, tracking is a trap: the apps that could help you spot post-exertional malaise cost more energy than a crash day has. Long forms and detailed diaries are exactly what an energy-limiting illness rules out.
Ebb was built around that reality. You tap your symptoms, rate each one 1 to 5, add a note if you want, and you're done. Thirty seconds, even through brain fog, even on crash days.
Download Ebb free on iPhoneWhy track ME/CFS symptoms at all?
Two reasons, and both are practical, not aspirational:
- Pacing. Post-exertional malaise arrives 24–72 hours after the exertion that caused it, which makes the connection nearly impossible to see in the moment. Tiny daily logs are how the delay becomes visible — what you did Tuesday and how you crashed Thursday, on one chart.
- Appointments. "How have you been?" is an impossible question with brain fog. A three-month trend of fatigue, sleep, and pain answers it in one glance — and Ebb exports to PDF so you can hand it to your doctor.
What makes tracking sustainable with chronic illness
The tracker you'll still be using in six months is the one that costs the least energy. Ebb keeps the cost low on purpose:
- One screen, minimal taps. No navigating menus to log.
- Your symptoms, your words. Track fatigue, PEM, brain fog, unrefreshing sleep, pain, orthostatic symptoms — or anything you name yourself.
- A gentle daily reminder at whatever time works for your body.
- Missed days don't break anything. No streaks, no guilt. Log when you can.
- Private by default. Your health data stays on your device.
Free tier: track up to 5 symptoms with full logging, history, and 7-day trends.
Premium: unlimited symptoms, full trend charts, and PDF/CSV export for appointments.
Also living with fibromyalgia, POTS, lupus, or EDS?
The same design holds: low-energy logging for conditions that take your energy. Ebb doesn't care what your diagnosis is — it tracks whatever symptoms matter to you, at whatever pace you can manage.
Get Ebb on the App StoreCommon questions
Can I track PEM or post-exertional crashes?
Yes, as a symptom you name yourself — many people add "PEM" or "crash" alongside fatigue and brain fog. Ebb has no dedicated pacing engine and no activity tracking; it records your own daily ratings, which is what makes the payback pattern visible over weeks.
How long does a daily log actually take?
About thirty seconds. One screen, tap your symptoms, rate each 1 to 5, optional note, done.
Is Ebb free?
Yes. The free tier lets you track up to 5 symptoms with full daily logging, complete history, 7-day trends, a daily reminder, and CSV export. Premium ($4.99/month or $29.99/year) adds unlimited symptoms, full trend ranges, and doctor-ready PDF reports.
What if I'm too ill to log for weeks?
Nothing. Ebb has no streaks and no guilt mechanics. A gap of a week doesn't break your history or your trends — you pick up whenever you can, and you can go back and log a missed day from History whenever you want.