Trace Health vs ReactLog

Trace Health is the easiest, most private symptom and mood tracker for iPhone, iPhone Duo and Apple Watch, made for people living with chronic conditions. Log any symptom, your daily mood or your period in one tap, see how they evolve over days, weeks and months, find what triggers or relieves them, and share a clear PDF report with your doctor. Tracking your symptoms is free. Track your symptoms privately, without an account. No sign-up, no personal info ever requested. Your data stays on your iPhone by default, with optional private iCloud backup. Trace Health never collects, shares, or sells your health data. Easy, even on bad days. No forms, no typing, no setup: choose your conditions and tap. Log straight from a Home Screen widget, the Lock Screen or your Apple Watch, without opening the app. NEW: Made for iPhone Duo. Log a symptom with one hand on the cover screen, or open it to see your symptoms and daily activities side by side. Also new: once a day, swipe through the symptoms still active to update them in seconds. Find your triggers and relievers. Log daily activities and habits (food, sleep, stress, exercise, medications, weather) alongside your symptoms, and Trace Health shows you which factors make your symptoms and your mood better or worse. KEY FEATURES • Track 100+ symptoms across 12 categories, or create your own. • Choose from 35 conditions, including diabetes, migraine, Long COVID, ME/CFS, POTS, fibromyalgia, MCAS, IBS, endometriosis, PCOS, PMDD, perimenopause, depression, anxiety, bipolar disorder, ADHD, PTSD, axial spondyloarthritis, FND and herpes (HSV), to set up the right symptoms and activities automatically. • Log your mood once a day, add a private note, and fill in the days you missed. • See what lifts or weighs on your mood, how it changes when a symptom flares, and compare any symptom or activity with your mood. • Follow your cycle: cycle and period length, estimated next period, fertile window, a cycle calendar and which symptoms your cycle makes worse. • Log symptoms in one tap, with the exact time, severity changes, duration, notes and photos. • Discover your Year in Pixels, trends, and insights in clear, interactive charts. • Generate doctor-ready PDF reports, mood included, to share with your doctor. • Symptom and mood tracker for Apple Watch: tap a symptom to set its severity, tap an activity to count it, swipe to set today's mood, check the last 7 days, and add Trace complications to your watch face. • Log symptoms and mood from Home Screen and Lock Screen widgets without opening the app, and see how many symptoms are still active at a glance. • Keep a Live Activity on your Lock Screen and Dynamic Island: every active symptom in one card, tap to change severity or mark it gone. • Two-way Apple Health sync: send your symptoms, activities and daily mood, and import your workouts, sleep, moods and periods to see how they affect your symptoms. • Set reminders for your medication and daily routines, and smart reminders that keep your symptom history accurate. • Track multiple profiles (yourself, kids, partner, and others). • Download your data as CSV. • In 10 languages, including Chinese. FREE TO TRACK YOUR SYMPTOMS For most people, Trace Health is a free app to track symptoms: 100+ symptoms and 35 conditions, one-tap logging, your daily mood and cycle, trends, insights and doctor reports for the last 30 days. Premium is for people who need more: your own symptoms and activities, deeper insights, the Apple Watch app, Apple Health sync, Home Screen widgets, family profiles and unlimited history. Download Trace Health today and take control of your health, privately.

You take a supplement every morning. But is it actually doing anything? You cut out dairy last week. Did it help — or was it something else entirely? You can't answer these questions with memory. You need data. ReactLog turns your daily habits into clear, actionable intelligence about your body. How it Works: Log what goes in — supplements, medications, food, caffeine, anything. Then check in with how you feel throughout the day: mood, energy, focus, symptoms. Takes 10 seconds. Over days and weeks, ReactLog's on-device engine analyzes your data and surfaces the correlations hiding in plain sight. That magnesium you started three weeks ago? It's correlated with 18% better sleep. That protein bar you eat on Tuesdays? Your afternoon brain fog spikes every time. This isn't guesswork. It's your own biofeedback data, processed privately on your device. What you Get: - Biofeedback OS — A living intelligence layer that monitors your active signals and flags what matters - Smart Correlations — See exactly how each input connects to how you feel, ranked by strength - Mood Intelligence — Track psychological states across 5 dimensions with quick check-ins - Supplement Tracking — Log any supplement, medication, or compound with one tap - Apple Health Sync — Automatically pulls 15+ biometrics including sleep, HRV, steps, and heart rate - Insight Engine — 38+ smart signals analyzed continuously as your data grows - Timeline — Visual history of everything you've logged, searchable and exportable - Protocols — Build and track structured supplement or wellness routines - Achievements — Stay motivated with milestones tied to real consistency Who is this For? You take supplements and wonder if they actually work. You suspect certain foods are tanking your energy. You're managing a chronic condition and need to identify triggers. Your doctor asked you to keep a symptom journal. You want to optimize how you feel — not guess. Privacy First ReactLog processes everything on your device. No cloud. No servers. No accounts required. Your health data never leaves your phone. Period. Pricing Free to download and explore. Full access to all features for $2.99/month or $29.99/year. Cancel anytime. Start logging today. The patterns are already there — ReactLog just makes them visible. ReactLog is not a medical device and does not provide medical advice, diagnosis, or treatment. Always consult your healthcare provider before making changes to your health routine. Questions? Visit reactlog.com or email support@reactlog.com Terms of Use: https://reactlog.com/terms Privacy Policy: https://reactlog.com/privacy