Tabata & HIIT Timer vs ReactLog

PEAKVO2 is a VO2 max training app built around the interval protocols that actually move the needle: Norwegian 4x4, Tabata, HIIT 30/30, and more. Pick a workout, press start, and the app guides you through every phase: warm-up, work intervals, recovery, and cooldown. Why VO2 max? VO2 max is the single best predictor of cardiovascular fitness and long-term health. Improving it doesn't require guesswork, it requires the right intervals, done consistently. PEAKVO2 gives you both. What's included: 24 science-backed interval protocols, including the Norwegian 4x4, Tabata, and HIIT 30/30 Build your own custom interval workouts Color-coded workout timer with automatic phase transitions Activity tracking with streak, year in review, and training minutes Works with running, cycling, rowing, and indoor cardio Free to start. 4 workouts are yours forever — no strings attached. Unlock all protocols, custom workouts, and full activity tracking with a subscription or one-time lifetime purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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