HiWater is a powerful water logging app available on iPhone. It not only allows you to track your daily water intake but also provides analysis based on the water pyramid model. This model divides daily beverages into six healthy levels, helping you understand if your water intake aligns with health guidelines.

With HiWater, you can easily log your daily water intake and set personalized hydration goals. The app also features the water pyramid, which classifies beverages into different health levels. This helps you analyze the structure of your water intake and avoid consuming excessive amounts of beverages.

One of the standout features of HiWater is its smart reminder system. The app sends notifications to remind you to hydrate when your body is dehydrated. You can customize the reminders based on different rules for weekdays and weekends. HiWater also supports iOS 15 time-sensitive notifications.

HiWater seamlessly integrates with the iOS ecosystem, supporting Shortcuts, Siri suggestions, and Home Screen widgets. This allows power users to track their water intake without even opening the app. Additionally, the app has a dedicated Apple Watch app, allowing you to check your body hydration and log water intake directly from your wrist.

For data synchronization, HiWater supports iCloud sync, ensuring your logged data is safely stored. It also syncs with iOS Health data, including water and nutrient information. Furthermore, HiWater works seamlessly with HiCoffee, another app for tracking caffeine intake, automatically syncing water data when you log coffee.

HiWater offers basic features for free, which can be used indefinitely. However, there are premium features available through a membership subscription. The subscription details can be found in the app's settings, and prices may vary by region.