Widgets that actually help
Your progress on the Home Screen, for free. With Pro, add a glass from the widget without opening the app, and follow your day on the Lock Screen.
iPhone and Apple Watch
Drink. Unlock. Carry on.
Hydravia is the iPhone and Apple Watch app that actually gets you drinking: when the reminder lands, the apps you chose lock. Drink your dose and everything opens back up.
Download on the App Store Coming soon
Free · Pro with a 7-day trial
You already know you should drink. That was never the problem.
Hydration apps send one more notification, you swipe it away, and nothing changes. Passive reminders ask for willpower at the worst possible moment: when you are already deep in something else.
Hydravia does not remind you to drink. It makes the moment impossible to ignore.
THE RITUAL
Three beats, a few seconds
- 01
The lock lands
At the interval you chose, the apps you picked refuse to open. Only during your active hours, never at night.
- 02
You say how you feel
One question. Your answer, today’s weather and what you have already drunk add up to a precise dose, not a generic glass.
- 03
You drink, you get your phone back
Confirm, and the lock lifts until the next reminder. The water level rises behind the screen. Goal reached? The lock rests until tomorrow.
WHAT CHANGES
Built to last past week one
-
A calculated dose, not a random glass
Your weight sets the daily goal. What you have already drunk, the time left before bed, how thirsty you are and the outside temperature adjust every dose.
-
A real lock, not a notification
Hydravia uses Apple’s Screen Time to block the apps you choose. You decide which ones: Instagram and TikTok, or none at all.
-
Goal reached, you get some peace
As soon as today’s goal is reached, the reminders stop and the lock rests until tomorrow. Not one reminder too many.
-
Your consistency, without the guilt
A week at a glance, your current streak, your record. Enough to keep you going, without ever lecturing you.
WHEREVER YOU LOOK
Your water, at a glance
And on your Apple Watch
Today’s ring, the time of the next reminder and complications for your watch face. With Pro, your three favourite amounts pour in one tap, right from your wrist.
PRICING
Free to start
Free
€0 forever
- Water tracking and full history
- Reminders during your active hours
- The ritual on one app
- Progress widget, Apple Watch and complications
Hydravia Pro
€2.99 per month
or €19.99 a year, or €39.99 once and for all
Everything in Free, plus:
- As many apps and sites locked as you like
- A dose adjusted to your thirst and the weather
- Quick-add and Lock Screen widgets
- Pour a glass from your Apple Watch
7-day trial on subscriptions
Compare the plans in detail
| Feature | Free | Hydravia Pro |
|---|---|---|
| Water tracking and history | Included | Included |
| Reminders during your active hours | Included | Included |
| Apps and sites locked | 1 app | No limit |
| Progress widget, Apple Watch and complications | Included | Included |
| Quick-add and Lock Screen widgets | Not included | Included |
| Dose adjusted to your thirst and the weather | Not included | Included |
| Pour a glass from your Apple Watch | Not included | Included |
| Price | €0 | €2.99 a month, €19.99 a year or €39.99 for life |
Prices in euros. The App Store shows the price in your currency.
Local first. Actually.
- No account to create
- Your history stays on your iPhone and your watch
- No advertising trackers
- Hydravia cannot read any of your Screen Time data
WHO MAKES IT
Designed and built in Switzerland
Hydravia is designed and built in Cugy, in the canton of Fribourg, by Nicolas Meuwly, independently. It started from a simple observation: you can swipe a reminder away, not a lock.
A question, an idea, a bug? Write to contact@hydravia.app : the person who makes the app answers.
QUESTIONS
What people ask
Does it really lock my phone?
It locks the apps you picked, not the whole phone. Calls, messages and anything you did not select stay available. And only during your active hours.
How is it different from a plain reminder?
A plain reminder is gone with one swipe. With Hydravia, the apps you picked lock when the reminder lands and only open again after the ritual, the time it takes to drink your glass. The reminder can no longer slip by.
What if I genuinely need that app right now?
The ritual takes seconds: answer one question and confirm. Nothing forces you to actually drink, Hydravia takes your word for it. The point is a pause, not a prison.
What happens when I reach my goal?
Today’s reminders stop and the lock rests until tomorrow. If you raise your goal or delete a glass, they come back.
Do I need an Apple Watch?
No. Everything works with the iPhone alone: reminders, the lock, tracking and widgets. The Apple Watch is a bonus to see today’s water at a glance and, with Pro, pour a glass from your wrist.
Does it work with Apple Watch?
Yes. The Apple Watch app shows today’s water and the next reminder, with complications for your watch face, for free. With Pro, you add a glass from your watch. Your iPhone keeps the history: the two talk directly, without going through a server.
Why does it need Screen Time access?
On iOS it is the only way to block other apps. Apple keeps that access very tightly controlled: Hydravia can put a lock in place, but cannot read any of your usage statistics. You can revoke the permission at any time in Settings.
How much water should I drink a day?
The European Food Safety Authority (EFSA) recommends about 2 litres of water a day for adult women and 2.5 litres for men, food included: it provides roughly 20% of it. Hydravia works out your own goal from your weight, about 33 ml per kilo.
How is the dose calculated?
The daily goal is worked out from your weight: roughly 33 ml per kilo, always between 1.5 and 4 litres. Each dose then spreads whatever you have left to drink across the reminders before bedtime, and adjusts for your thirst and the outside temperature.
Which devices does Hydravia run on?
iPhone with iOS 26 or later, and optionally Apple Watch with watchOS 26. The lock uses Screen Time, Apple’s own system, on the iPhone.
What does it cost?
Tracking, reminders, the progress widget, the Apple Watch app and the ritual on one app are free. Hydravia Pro unlocks the rest: a monthly or yearly subscription with a seven-day free trial, cancellable at any time from your phone’s settings (we let you know before the trial ends), or a one-time lifetime purchase.
Start tonight.
Free to start. Pro has a seven-day trial, and cancels in two taps if it is not for you.
Download on the App Store Coming soon
Free · Pro with a 7-day trial