Welcome to Hydra support.
Hydra is a hydration tracker that calculates your daily water target from your weight, sex, activity level, and climate — then automatically increases the target when you take creatine.
Drag up anywhere on the home screen — the water level rises to where you logged. You can also tap the quick-add buttons (Glass 250ml, Bottle 500ml, Shaker 700ml) or use Custom for any amount.
Your target is personalised from your weight, sex, activity level, and climate during onboarding. Taking creatine adds 500ml per 5g dose to your daily target, because creatine pulls water into your muscle cells.
A day counts toward your streak when you hit ≥90% of your target. You get one streak freeze per week to cover a missed day. Personal best tracks your longest run.
Yes — go to Settings → Daily target and adjust any of the inputs (weight, sex, activity, climate, creatine dose).
Settings → Units.
Make sure notifications are enabled in Settings → Reminders, and that the app has notification permission in your device's system settings. The Test notification button sends a sample reminder right away.
Yes. Hydra has no servers and no account. Everything works fully offline.
No. All data is stored locally on your device only. Deleting the app or resetting the device clears your Hydra data.