Track mood, health metrics, and lifestyle inputs. ReactLog finds the hidden correlations in your biology so you can feel better, faster.
ReactLog connects the dots between what you do and how you feel. Track supplements, food, medication, and mood alongside 15+ health metrics from Apple Health. The correlation engine surfaces the signals hiding in your data.
Heart rate, HRV, blood pressure, respiratory rate, and SpO2 — all in one view.
Discovers how your inputs affect your outcomes across days, weeks, and months.
Deep pattern analysis of your psychological states, energy, anxiety, and stress levels.
Every aspect of your wellbeing, tracked, analyzed, and optimized.
Your daily command center. Mood logging, health metric summaries, and personalized briefings — all at a glance.
Deep system-level analysis of psychological, physical, and metabolic responses over time.
AI-powered correlation analysis reveals what actually moves the needle for your health.
Go beyond simple mood logging. Map the landscape of your emotional states, track energy and anxiety patterns, and discover the inputs that shape how you feel each day.
Scroll through every logged entry, metric reading, and mood check-in with a rich historical view.
Structured experiments to test supplements, routines, and lifestyle changes with measurable outcomes.
Earn XP and unlock milestones as you build consistent tracking habits. Gamification that actually works.
No complicated setup. No data science degree required.
Track supplements, food, medication, and mood with quick-tap logging. Scan barcodes, search the USDA database, or create custom entries in seconds.
ReactLog pulls 15+ health metrics automatically from Apple Health — heart rate, HRV, sleep, blood pressure, VO2 max, and more.
The correlation engine analyzes your data across days, weeks, and months to surface the signals — like which supplement improves your sleep or which food tanks your energy.
Every screen built for clarity, speed, and beautiful data visualization.
Most health apps make money by selling your data to advertisers, insurers, and data brokers. ReactLog has no backend servers, no analytics SDKs, and no data collection of any kind. Your health data never leaves your iPhone — period. That's why we charge for the app instead of charging you with your privacy.
From heart rate variability to sleep stages, ReactLog pulls everything from Apple Health into a single, intelligent dashboard.
Get the full ReactLog experience at no cost. Be one of the first to discover what your body is telling you.
Download ReactLog and begin discovering the hidden patterns in your health data.