Last updated June 14, 2026
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Open Settings (gear icon on the home screen), scroll to Daily Goal, and tap to set a custom amount. Custom goals are a Pro feature.
iOS subscriptions are managed by Apple, not by Hydro Hero. On your iPhone: Settings → [Your Name] → Subscriptions → Hydro Hero → Cancel Subscription. You'll keep Pro access until the end of your current billing period.
Open the paywall in the app (tap any locked feature, or Settings) and tap Restore Purchases at the bottom. Apple will reinstate your subscription or Lifetime purchase automatically.
Open Settings in Hydro Hero, find the Sync to Apple Health toggle, and turn it on. iOS will ask permission to read and write water data — tap Allow. Every drink you log will save as a Water sample, and undoing a drink removes it from Health too.
Not all drinks hydrate equally. Water counts as 100% of its volume toward your goal. Coffee, beer, and other diuretic drinks count for less because they actually pull some water out of your body. Hydro Hero uses real hydration science so your "hydrated" number reflects what your body actually absorbs — not just what went in your mouth.
Yes. Hydro Hero is fully local-first. All your data stays on your device. No login, no cloud sync, no account required. The only things that go online are App Store purchases (handled by Apple), crash reports (anonymous, via Sentry), and — only if you turn on the optional weather feature — a quick temperature lookup that sends your approximate location to Open-Meteo so the app can suggest extra water on hot days. Your location is never stored.
Because Hydro Hero stores everything locally on your device, we don't have a copy on our servers. If you delete the app or factory-reset your phone, your hydration history is gone. We recommend exporting your data periodically as a CSV (Settings → Export Hydration History — Pro feature).
Squad members share their progress by generating a code and sending it to you. Their data updates when they share a new code with you — it's not real-time. Ask them to tap Share My Progress in their app and send you the new code.
Hydro Hero doesn't have accounts. To remove all your data, simply delete the app from your iPhone. Everything on the device goes with it.
Email us at WIMSBY1@icloud.com and we'll get back to you. When reporting bugs, please include your iPhone model and iOS version so we can reproduce the issue.