Adaptive notifications
Reminders that learn your rhythm — calmer on quiet days, prompt on missed ones. So you don't depend on a thirst signal that isn't coming.
For patients on GLP-1 medications
Stay hydrated on GLP-1 medications.
A free, on-device water reminder app — built for the days thirst doesn't show up.
Download on theApp Store
Works with Ozempic, Wegovy, Mounjaro, Zepbound, Saxenda, Trulicity, Rybelsus.
The mechanism, plainly
Why your brain stops asking for water.
GLP-1 receptor agonists — semaglutide (Ozempic, Wegovy), tirzepatide (Mounjaro, Zepbound), liraglutide (Saxenda) — bind to receptors in the hypothalamus that regulate appetite and thirst. The same drug action that quiets your hunger also quiets your thirst signal. This is well-documented in peer-reviewed literature (McKay & Daniels, 2011).
The clinical term is hypodipsia — reduced thirst perception. It's a known, expected effect of the drug class, not a side effect of one specific medication. And because you're not feeling thirsty when your body needs water, mild dehydration becomes routine — which amplifies the most common GLP-1 side effects: fatigue, headaches, constipation, and nausea.
The fix is straightforward. Drink on a schedule, not on thirst. Track total volume, not vessel counts. Make hydration a background habit so it doesn't depend on willpower or signals that aren't coming.
Why Waterd, specifically
Built for the days thirst doesn't show up.
Volume-honest math
Tracks total ounces — not vessel counts. When you're forcing fluid intake without thirst feedback, "2 of 4 bottles" hides the ball. Real volume keeps you honest.
On-device privacy
Medical context deserves privacy. No accounts. No cloud sync. All Apple Intelligence runs on your iPhone. Your hydration data never leaves your device.
Practical guidance
What clinicians recommend.
Most clinicians advising GLP-1 patients recommend the following framework. Always confirm specifics with your prescriber.
80–100 oz
per day for adults — more in heat or after exercise.
Sip throughout the day
Don't chug. Large volumes at once can worsen GLP-1 nausea.
Add electrolytes early
Sodium, potassium, magnesium — common during the first 1–3 months of therapy. Low-sugar products only.
Track total volume
Not vessel counts. Water + coffee + tea + broth all contribute — count them honestly.
For the science behind these numbers and the full breakdown, read the full guide →
Want the AI?
Free, with optional Apple Intelligence.
Monthly
$1.99/ month
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7-day free trial- Daily Hydration Intelligence
- Weekly AI Insight
- Natural Language logging
- Bottle Photo Scan
- Adaptive Notifications
Yearly
$4.99/ year
save ~80% vs monthly
- Daily Hydration Intelligence
- Weekly AI Insight
- Natural Language logging
- Bottle Photo Scan
- Adaptive Notifications
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Lifetime
$7.99once
Pay once, keep forever
- Daily Hydration Intelligence
- Weekly AI Insight
- Natural Language logging
- Bottle Photo Scan
- Adaptive Notifications
Download on theApp Store
All three unlock the same five Apple Intelligence features. Family Sharing supported.
Questions
For GLP-1 patients.
Is Waterd a medical device?
No. Waterd is a behavior tool — it tracks what you log and reminds you to drink. It does not diagnose, treat, or monitor any condition. Always follow your prescriber's hydration guidance.
Does it integrate with my GLP-1 tracking app?
Waterd writes hydration logs into Apple Health (HealthKit). Any GLP-1 companion app that reads HealthKit hydration sees your Waterd logs.
I just started Wegovy and I have no thirst. Is that normal?
Yes. GLP-1 receptor agonists bind to hypothalamic receptors that regulate both appetite and thirst — so the same drug action that quiets your hunger also quiets your thirst signal. That's exactly why an external prompt to drink helps. Read the full guide →
Get Waterd
Hydration on autopilot, while your medication does its work.
Free, no ads. iPhone, Apple Watch, iPad.
Waterd is a behavior-tracking app, not a medical device. The information on this page is for general education and should not replace medical advice from your prescriber.