ReactLog
See What's Actually Working
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Your body already knows what works — you just can't see it yet. ReactLog reveals the hidden connections between what you take and how you feel. 100% private. On-device.
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
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Minor UI adjustment
The developer, Luke Thompson, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Luke Thompson
- Size
- 9.4 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- ReactLog Premium Monthly $2.99
- ReactLog Premium Annual $29.99
- Copyright
- © 2026 Luke Thompson