Halvo vs Super Fasting Tracker

Your last coffee decides your night. Halvo shows you how much caffeine is actually working in you right now — and tells you the point after which the next cup starts costing you sleep. Your personal cut-off. Most caffeine apps count milligrams. Halvo works with the caffeine that actually reaches your system: it rises, peaks and fades. Halvo predicts how much of it is still there when you go to bed. YOUR PERSONAL CUT-OFF Everyone clears caffeine at a different speed. Halvo shows you the latest you can have a cup without too much of it still active when you fall asleep. LOG IN SECONDS Add coffee, espresso, tea, energy drinks, soda, mate or your own pre-workout in a few taps. Halvo sums it up automatically and shows how much is still working. ON YOUR HOME SCREEN AND ON YOUR WRIST The widget shows your level and your cut-off without opening the app — one tap logs your favourite drink. In the evening it switches to "lights out" on its own. Plus Apple Watch with a complication for a glance-and-go check. SEE YOUR CURVE Watch caffeine rise, peak and fade on a real concentration curve — and see exactly where you'll land when your head hits the pillow. A MODEL THAT LEARNS YOU — HONESTLY (PRO) With your permission, Halvo reads your sleep, heart rate and HRV from Apple Health and learns your personal caffeine half-life over time. Here's what makes it different: when the signal in your data is too weak to be sure, Halvo says so and keeps using the population value — instead of faking precision it doesn't have. WORKS WITH YOUR WEARABLES (PRO) Apple Watch, Oura, Whoop, Garmin — anything that syncs sleep and heart data to Apple Health. Halvo never connects to those services directly; it only reads what's already in Apple Health. PRIVATE BY DESIGN Your intake and health data are processed on your device. Halvo doesn't sell your data. FREE & PRO Logging caffeine, seeing your curve, using the widget and finding your cut-off are free. Halvo Pro adds the personal learning model and the nightly sleep analysis. Halvo Pro: • Monthly – $3.99 • Yearly – $24.99 (with 1 month free) • Lifetime – $44.99 one-time (no subscription) Payment is charged to your Apple Account. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple Account settings. Lifetime is a one-time purchase. Prices may vary by region. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://halvo.jnmcloud.de/privacy.html Halvo is not a medical device and does not diagnose, treat or prevent any condition. It helps you make more informed choices about caffeine.

Super Fasting Tracker is the clean, lightweight way to do intermittent fasting. Open the app, tap once, and your fast is running — no account, no ads, no clutter. Your fast stays with you everywhere: on the Lock Screen with Live Activity and the Dynamic Island, on the Home Screen with interactive widgets, and on your wrist with the Apple Watch app. Everything syncs privately through iCloud. FASTING TIMER • One-tap start and end — unlimited fasts, never locked behind a paywall • Popular plans: 13:11, 14:10, 16:8, 18:6, 20:4, and OMAD • Custom fasting goals from 4 to 48 hours (Pro) • Forgot to log? Edit your start time anytime • A journey ring that shows your progress through every stage FASTING ZONES • Follow your body in real time: Anabolic, Catabolic, Fat Burning, Ketosis, and Deep Ketosis • Clear, simple explanations of what happens in each zone • Optional notification as you enter each new zone ALWAYS AT A GLANCE • Live Activity and Dynamic Island: your timer right on the Lock Screen • Interactive Home Screen and Lock Screen widgets — start or end a fast without opening the app • Control Center toggle on iOS 18 • Siri and App Shortcuts: start a fast, end a fast, log water APPLE WATCH • Start, end, and track your fast from your wrist • Watch face complications with live progress • Streak and 7-day stats at a glance TRACK YOUR PROGRESS • History with a calendar heatmap and weekly charts • Streaks plus 19 achievement badges to earn • Streak freezes protect your streak on rest days • Weekly recap cards you can share • Weight tracking with charts, synced with Apple Health • Water tracking: one-tap logging, widget, daily goal, Apple Health sync INSIGHTS • See how your sleep and resting heart rate compare on fasting days, using your Apple Health data • Glucose overlay: if you wear a CGM that writes to Apple Health, see your glucose curve on your fasting timeline • Mood and notes on completed fasts • Complete history beyond 30 days, plus CSV export PRIVATE BY DESIGN • No account, no sign-up — ever • No ads, and your health data is never sold or used for advertising • Your fasting data stays on your device and in your personal iCloud Free forever: unlimited fasts, every standard plan, zones, Live Activity, widgets, Apple Watch, water and weight tracking, streaks and badges. Pro adds custom plans, health insights, mood and notes, full history, and CSV export. Super Fasting Tracker supports healthy habits; it is not a medical device and does not provide medical advice. Fasting zones are estimates and vary from person to person. Talk to your doctor before fasting if you are pregnant or breastfeeding, have diabetes, are under 18, or have a history of eating disorders. Terms of Use: https://techsmart.bio/fastingtracker/terms-of-use.html Privacy Policy: https://techsmart.bio/fastingtracker/privacy-policy.html Questions or ideas? We read everything: support@techsmart.bio