Drink with awareness.
FluidIQ scores what your body actually keeps, not just how much you drank.
Also available on Google Play
Today · 62%
"A coffee at nine, tea at noon, a glass of water you forgot to finish. Your body doesn't count cups — it counts balance. FluidIQ does too."
See what your body keeps.
Most apps count cups. FluidIQ's Net Hydration Engine weighs every drink by its real contribution — coffee and tea count less because of caffeine, sugary and alcoholic drinks are handled honestly — and turns the whole day into one calm score from 0 to 100. A low number isn't an alarm; it's room to go.
Estimates for personal awareness — not medical advice.
A goal that reads the day.
Your goal starts from your profile and gently adjusts for hot or humid weather and for activity. It's an estimate, not a prescription — and since food contributes fluid too, the bar never demands perfection.
Log in a second.
One-tap favorites, custom cups, home and lock-screen widgets, Apple Watch and Wear OS, optional voice logging. Logging should cost a second, not a decision.
Watch it fill.
The BodyHydrationTank is a living, layered fill that rises and settles with your day. No badges bursting, no confetti — just water finding its level.
Awareness
Aware, not preachy.
If you want it, FluidIQ keeps an honest, neutral eye on caffeine and on the calories and sugar in what you drink — gentle context, never a verdict, and every one of these can be turned off entirely.
Alcohol is logged the same quiet way: as one plain line in your day. Water doesn't undo it, and FluidIQ won't pretend otherwise.
Estimates for personal awareness — not medical advice.
Patterns, without pressure.
Weekly insights show your steadiest mornings and your thirstier afternoons. Streaks stay gentle — a missed day never punishes you — and when you want the long view, you can export a report as a PDF. Numbers without pressure.
Yours, on your device.
Core features work fully offline and on-device — no account, no ads, nothing to sign into. The one optional feature that touches the network is local weather: it uses your approximate location just long enough to fetch the forecast, and stores nothing.
Every detail tuned to stay out of the way.
Small things that make a quiet habit feel like one.
Caffeine sleep-cutoff
A quiet note when a late coffee lands close to bedtime. Informational, never a scold.
Custom drinks & cups
Model your own mugs, bottles, and mixes once — then log them forever in a tap.
Apple Health & Google Fit
Optional two-way hydration sync with the health app you already use.
Themes & dark mode
Light, dark, and quiet accent themes that follow your phone or your mood.
Built for everyone
Dynamic Type, VoiceOver, and color-blind-safe palettes throughout.
Fluid-limit mode
For people who track a set daily intake with their clinician: set the cap, and FluidIQ counts toward it. It counts — it never advises.
Designed to disappear.
A few thoughtful screens, no clutter. Swipe through.
Quiet voices
What people say after a few weeks.
"I stopped guessing — coffee-heavy days are finally obvious. That's all I wanted from it."
Derya A.
Product designer
"The widget is why I actually log. Two taps, done."
Jonas M.
Runner
"First tracker that doesn't nag me. I check the score the way I check the weather."
Mei L.
Editor
Start seeing what you keep.
Free to download. No accounts. No ads. Just a clearer picture of your day.
Today