Comparison

Zebra Symptom Tracker vs Pebble

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Zebra Symptom Tracker

Features
Read full description

Tired of jumping between 3 apps to track one body? Zebra is a calm symptom tracker for people managing POTS, EDS, and Fibromyalgia. Track flares, symptoms, medications, salt, water, triggers, notes, and orthostatic vitals in one iPhone app, then turn your recent history into a doctor-ready PDF. Built for invisible illness, brain fog, and the appointment scramble. TRACK WHAT MATTERS Zebra helps you capture the pieces that are hardest to remember later: Daily flare severity and notes POTS, EDS, and Fibromyalgia symptom check-ins Salt and water tracking Medication entries Trigger notes Orthostatic vitals: lying, standing, and recovery heart rate and blood pressure Trends across your recent history GUIDED ORTHOSTATIC TESTS Use Zebra's step-by-step orthostatic flow to track heart rate and blood pressure while lying, standing, and during recovery. Enter readings manually or, when available, use HealthKit support for heart-rate capture. PROOF FOR YOUR DOCTOR When an appointment is coming up, Zebra can export a 30-day doctor report PDF with your flares, symptoms, medications, salt, water, triggers, notes, and orthostatic summaries. No more digging through Notes, screenshots, and memory the night before a visit. MADE FOR BAD DAYS Zebra is designed to be fast, gentle, and low-friction. Use curated symptom lists instead of building a tracker from scratch. Track what happened, leave optional details for later, and skip the guilt. Missing days do not erase your history. PRIVATE BY DESIGN Your health history is sensitive. Zebra is built as a native iPhone app using Apple's health and data frameworks. You stay in control of what you track and what you choose to share. FREE TO TRACK. PREMIUM FOR DEEPER HISTORY. Start with core tracking for flares, symptoms, medications, salt, water, triggers, notes, trends, and orthostatic vitals. Zebra Premium adds expanded history and doctor-report access for users who want more appointment support. Zebra is for people with POTS, EDS, and Fibromyalgia who want less app-juggling, clearer history, and proof they can bring to a doctor. Zebra does not diagnose, treat, or replace medical care. It helps you organize and share your own tracked history. Privacy Policy: https://zebratracker.app/privacy Terms of Use: https://zebratracker.app/terms

About

Pebble

This app offers a simple, offline health diary for tracking daily symptoms like pain, mood, and energy. It generates a concise, one-page summary for doctor appointments, focusing on clarity over complexity. Designed for individuals managing chronic conditions, it prioritizes ease of use and data privacy.

Highlights
  • Daily symptom logging (mood, pain, energy)
  • Customizable symptom list
  • Pain location mapping
  • Medication tracking
  • One-page doctor brief generation
  • Offline data storage
  • Optional Apple Health integration
Features
Read full description

Pebble is a hand-drawn symptom diary that takes thirty seconds a day. No cloud, no accounts, no streaks. Just enough to walk into your next appointment prepared. Three sliders for energy, pain, and mood. Tap a few symptoms. Close the app. That's the whole daily log. Then once a month — or before your next doctor's visit — Pebble prints a one-page brief. A short, plain-language summary your doctor can actually read. Not a 12-page spreadsheet. Not a scrollable chart dump. One page, sixty seconds. — Made for foggy days — Pebble is built for chronic illness, ADHD, and AuDHD. For people with fibromyalgia, POTS, EDS, migraine, IBS, endometriosis, long COVID, PMDD, ME/CFS — and anyone whose health doesn't fit neatly into "feeling well" or "feeling sick" boxes. If your brain can't track ten things at once. If filling out another form is the last thing you have energy for. If you've ever forgotten half your symptoms by the time you got to your appointment — this is for you. — What you log — • Mood, energy, and pain on simple sliders • Where the pain is — a small body diagram (front + back) you can tap to mark the spots • Your own symptoms, from a customizable list (no 2,000-symptom menus) • Medications — taken or skipped, no guilt either way • Cycle, if you track one • Flare-ups, on the days they happen • Short voice notes, transcribed on your phone • Sleep, steps, and resting heart rate from Apple Health (optional) — The doctor brief — The hero feature. Pebble reads your last 7, 14, or 30 days and writes: "Energy dropped sharply on Tuesday and stayed below baseline through Thursday. Pain peaked at 8/10 on Wednesday morning, correlated with poor sleep the night before. Brain fog was reported 4 of the last 7 days." A paragraph your doctor reads in sixty seconds. Print it. Email it. Screenshot it to your patient portal. Walk in prepared. — Nothing leaves your phone — Pebble has no accounts. No cloud sync. No analytics. No third-party trackers. Your symptom data is encrypted on your phone and never leaves it. Not by Pebble, not by anyone. Even your daily logs stay local. The only network calls Pebble ever makes: weather lookup, opt-in, city-level only, never precise GPS; and receipt validation for Premium purchases. That's the entire list. — No streaks, no guilt — Pebble has no streak counter. No "you missed yesterday" notifications. No gamification. Vacation mode for flare weeks lets you skip without losing anything. Streaks were the wrong shape for chronic illness from day one. — Premium — $4.99 a month or $29.99 a year. Unlocks unlimited briefs, intraday mood capture (Moments), a private backup file you control, and your voice notes folded into the brief. The free tier is fully usable forever — log every day, get one brief a week. — Who built this — I made Pebble for my wife. She came home from doctor visits frustrated they didn't believe how bad it was, and the other apps were too much. Pebble is the artifact she wished she had: small, calm, defensible. Insights provided by Pebble do not constitute medical advice. Please consult your doctor. Questions or feedback: pebble.symptom.app@gmail.com END USER LICENSE AGREEMENT: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Zebra Symptom Tracker4 screens
Pebble4 screens

Verdict

The call

The clearest difference is update cadence: Zebra Symptom Tracker at weekly against Pebble's every 4 weeks. Pebble's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Zebra Symptom Tracker sells 3 in-app purchases, starting at $4.99 per month and Pebble sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Zebra Symptom Tracker ships an update weekly, Pebble every 4 weeks. The most recent releases landed on October 10, 2026 and October 11, 2026 respectively.

Scorecard3 real differences · 7 level
Zebra Symptom Tracker versus Pebble: the parameters behind the verdict, then further details
ParameterZebra Symptom TrackerPebble
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyWeekly — betterEvery 4 weeks
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.015.1 — better
Further details — not scored
Size13 MB133 MB
Age rating12+4+
DeveloperRoman BunJONATHAN DOUGLAS LAI

In-app purchases

3 purchases

Zebra Symptom Tracker

Subscriptions2
  • Zebra Premium — Monthly7 Days trial$4.991 Month
  • Zebra Premium — Annual7 Days trial$39.991 Year
One-time1
  • Zebra Premium Lifetime$59.99
2 purchases

Pebble

Subscriptions2
  • Premium Monthly$4.991 Month
  • Premium Annual7 Days trial$29.991 Year

Questions

Is Zebra Symptom Tracker free?
Zebra Symptom Tracker is free to download, with in-app purchases available.
Is Pebble free?
Pebble is free to download, with in-app purchases available.
Do Zebra Symptom Tracker or Pebble have ads?
Neither Zebra Symptom Tracker nor Pebble shows ads.
Which is updated more often, Zebra Symptom Tracker or Pebble?
Zebra Symptom Tracker ships an update weekly, and Pebble every 4 weeks. Most recently, Zebra Symptom Tracker was updated on October 10, 2026 and Pebble on October 11, 2026.

Other comparisons