Caffy vs Luid

Caffy shows your exact caffeine level right now, and tells you precisely when you'll be ready to sleep tonight. Using pharmacokinetic half-life models backed by FDA, EFSA & NIH research, Caffy calculates your personal caffeine curve based on your biology. WHAT MAKES CAFFY DIFFERENT: • Real-time caffeine decay curve — personalized to your age, gender & sensitivity • Sleep readiness score (0–100) — know if tonight's sleep is at risk before bedtime • Focus window — see exactly when your caffeine peaks for maximum productivity • AI Weekly Analysis — AI reveals your personal caffeine patterns • Caffeine Detox Programs — structured plans to reduce dependence gradually • 6 Live Widgets — caffeine data on your Home Screen and Lock Screen • 5 Languages — English, Turkish, German, Spanish, Japanese PERSONALIZED HALF-LIFE: Your body processes caffeine differently. Caffy accounts for: • Pregnancy (9h / 12h / 18h half-life) • Oral contraceptive use (7h half-life) • Smoking status (3h half-life) • Age, gender & caffeine sensitivity SCIENCE-BACKED: Caffy's model uses the same caffeine decay formula cited by FDA, EFSA, NIH, and the Sleep Foundation — not estimates, not averages. A 45-minute absorption phase followed by exponential decay based on your personal half-life. PRIVACY FIRST: No ads. No data selling. Anonymous by default — no registration required on first launch. Your data syncs across devices via an encrypted, GDPR-compliant database. DISCLAIMER: All estimates are based on generalized scientific models and do not constitute medical advice. Consult a healthcare professional for personalized guidance. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Luid is a clean and modern water and drink tracker designed to make daily fluid tracking simple, visual, and easy to maintain. Log water, coffee, tea, and supported drinks in seconds. Follow your daily progress, view your recent routine on a weekly chart, and review your drink history whenever you want. Luid helps you understand your everyday fluid habits without making tracking feel complicated. You can personalize your daily goal, preferred unit, quick-add amounts, reminders, and app appearance to match your routine. History tools make it easy to review, edit, filter, or remove entries when needed. Luid is designed with privacy in mind. Your drink entries, goals, reminders, settings, and local insights are stored on your device. Optional Apple Health support can save new water entries to Apple Health when you choose to enable it. Luid is built for everyday wellness tracking and habit awareness. It is not medical advice and is not intended to diagnose, treat, prevent, or cure any condition. Hydration needs vary from person to person, and excessive fluid intake can be risky. Some advanced features require a paid Luid Pro subscription. Luid Pro may unlock deeper insights, interactive charts, timing analysis, drink balance insights, reminder intelligence, calendar heatmaps, personal records, recap views, custom drinks, and additional reminder flexibility.