SympLog Health Journal vs ReactLog

Track your health and lifestyle without giving up your privacy. SympLog is a privacy focused diary for tracking your symptoms and lifestyle. Log your vitals, sleep, nutrition, medications, cycle, and more. Discover patterns through detailed statistics and get a clear timeline for your next doctor's appointment while keeping your data 100% on your device. It offers full flexibility for your categories and is optimized for fast and easy daily use. SympLog is a personal lifestyle and wellness tracker, not a medical device. It does not diagnose, treat, or prevent any medical condition. FOCUS ON PRIVACY Local storage is the heart of the app. Your most private information stays where it is created—with you. That is why: • No account needed. Start tracking immediately without any sign ups or emails. • Your data is fully encrypted and stored locally on your device. • Your data does not leave your device. We do not track you or store your information on external servers. • You can activate extra security by locking the app via Biometrics (FaceID/Fingerprint) or a PIN. Your data is encrypted in any case. TRACK WHAT MATTERS TO YOU A solution that adapts to you and is fast to use, because consistent logging is easier when the interface is simple. • Symptom Tracker: Log severity and notes in seconds. Create your own categories and symptoms to track exactly what matters to you. • Vitals and Measurements: Record weight, blood pressure, heart rate, temperature, blood glucose, or water intake. Create custom values for anything you want to monitor. • Medication Manager: Manage your intake with a simple calendar view. Mark doses as taken and use schedules that help fill in dates automatically. • Sleep and Mood Journal: Record sleep duration and quality to understand your rest patterns. Use the sleep diary to write down dreams and other personal notes. • Cycle Tracking: Log your menstrual cycle and flow on a calendar and see a private estimate of your next cycle, based purely on your own history. • Lifestyle Logging: Track nutrition, activities, and life events alongside your health data so everything stays in one place. DISCOVER PATTERNS AND CORRELATIONS Consistent logging helps you understand your body, find potential triggers, and see how symptoms develop over time. • Find correlations between factors, such as how sleep quality impacts your mood, how specific foods relate to your well being, or how your symptoms and mood align with your menstrual cycle. • Use clear timelines and charts to prepare for your next doctor or therapist visit. • Visualize your health trends over days, weeks, or months with clear statistics. HELPFUL TOOLS You stay in full control of your data and how you want to log. • Apple Health: Optionally import data from your other health apps and devices (read only). Off by default, encrypted on your device, never shared. • Backup and Export: Create encrypted, password protected backups to move your data safely or export it as a CSV for your own analysis. • Encrypted PDF Reports: Generate a PDF of your complete journal history or just a currently filtered view—ready for your next doctor's appointment. • Custom Categories: Easily change default categories or modify your own in the settings. • Reminders: Create multiple reminders and define exactly which day and time you want to be notified. • Built for Speed: A fluid interface designed for daily use to make logging feel effortless. • Dark Mode: Fully supported for comfortable night time use. DEVELOPED IN SWITZERLAND Developed by BitByBit.ch with a passion for privacy respecting tools that keep users in control of their data. DISCLAIMER SympLog is a personal lifestyle and wellness tracker. It is not a medical device and does not provide medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional about your health, symptoms, or medications.

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