Waterd vs Vessel

The hydration tracker you never open. Waterd uses Apple Intelligence on supported devices to set your daily water goal based on your activity, the weather, and how you've been hydrating this week — automatically, on-device, no cloud. On devices without Apple Intelligence, Waterd uses a built-in formula based on your weight, activity, and weather forecast. Then it gets out of your way. Tap your bottle from the Home Screen widget, the Lock Screen, the Dynamic Island, your Apple Watch, or a notification action. Each tap is one drink, logged in under five seconds. The app exists for weekly reflection, not daily logging. PREMIUM — three ways to unlock • Monthly — $1.99/month with a 7-day free trial • Yearly — $4.99/year • Lifetime — $7.99 one-time purchase All three unlock the same premium features: • Personalized daily hydration goals that account for your activity and the weather • Weekly insights that explain your hydration patterns in plain English • Runs entirely on-device where Apple Intelligence is available ZERO FRICTION • Home Screen interactive widgets • Lock Screen widgets and StandBy support • Apple Watch complications and Smart Stack widget • Live Activity in the Dynamic Island • Notification action buttons that log without opening the app PRIVATE BY DESIGN • All data stays on your device. No accounts, no email collection. • Apple Intelligence runs entirely on-device where available. • HealthKit-compatible. Your water intake syncs with Apple Health. • No tracking. No ads. No social feeds. HOW GOALS ARE CALCULATED Waterd suggests goals based on widely-cited references (National Academies of Sciences, Mayo Clinic, ACSM, CDC). Full sources and citations are inside the app under Settings → How goals are calculated, and from every screen where the goal is shown. Waterd is a general wellness app and is not a medical device. SUBSCRIPTION TERMS Monthly and Yearly are auto-renewable subscriptions charged to your Apple ID. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Free trial converts to a paid subscription at the end of the trial. Manage or cancel in Settings → Apple ID → Subscriptions. Terms of Use: https://www.tapwaterdata.com/terms/app Privacy Policy: https://www.tapwaterdata.com/privacy/app

Vessel is the smartest way to track your daily hydration. Unlike other apps that count every drink equally, Vessel uses real peer-reviewed research to show you how hydrating your drinks actually are. WHY VESSEL IS DIFFERENT • Scientific hydration multipliers — coffee counts as 92% hydrating (Killer et al. 2014), beer at -10%, spirits at -50% • Beautiful ocean-depth progress ring that deepens as you drink more • Built-in health warnings for excess caffeine, alcohol, and overhydration FEATURES • Fast logging — one tap to add water, coffee, tea, beer, wine, and more • Daily progress ring with smooth water wave animation • Celebration when you hit your goal • 12 achievement badges for streaks and milestones • Week / Month / 3-Month charts with color-coded drink breakdown • Hydration Science page with cited research • Smart reminders at your chosen hours • Apple Health sync for water and caffeine • Body weight-based goal calculator • Dark mode support • Ounces, milliliters, and liters HEALTH WARNINGS Vessel alerts you when: • Caffeine exceeds FDA's 400mg/day limit • Alcohol intake crosses CDC moderate drinking guidelines • Water intake approaches levels that risk hyponatremia (over 3.5L/day) YOUR DATA, PRIVATE All drink data stays on your device. Optional Apple Health sync is fully under your control. No accounts, no tracking, no ads. Drink smarter, not just more.