HydroLog
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HydroLog

HydroLogPromise me: drink 2 liters a day!

Finish a glass, tap once, and the water in your bottle rises. One look tells you if you’ve had enough today.

Download on the App StoreGet it on Google Play

Available now on the App Store and Google Play · Core logging is free

HydroLog home screen: a glass bottle on a stone plinth under bamboo shadows, filled to 1.5L

How it works

LOG · HYDRATE · REPEAT

  1. 01

    LOGLog every glass

    Tap 100, 200 or 500 ml. Odd-sized cup? Dial anywhere from 100 to 1000 ml in 50 ml steps. Undo a slip.

  2. 02

    HYDRATECare for each day

    The water level is today’s progress, so you can see how far you are from your goal at a glance.

  3. 03

    REPEATBuild a daily habit

    A new day starts at 06:00. Pick today’s bottle, then flip through the calendar by week or month.

Peace of mind

Open it and start. Your log stays yours.

  • No sign-up

    Log your first glass right after installing.

  • Stays on your phone

    Your water log is stored locally and never uploaded.

  • No ads

    Logging a glass shouldn’t start with an ad.

Day and night

Sunlight by day, lamplight by night.

Same bottle, new light, new mood.

HydroLog home screen: a glass bottle on a stone plinth under bamboo shadows, filled to 1.5L
Day
HydroLog at night: a stone lantern glows beside the bottle, filled to 1.5L
Night

Ten bottles

Which one today?

  • 01Classic Sport BottleFree
  • 02Golden Wine GourdFree
  • 03Minimal BottleFree
  • 04Spout Sport BottleFree
  • 05Blue Water BarrelMembers
  • 06Amber Beer BottleMembers
  • 07Frosted Water JugMembers
  • 08Champagne BottleMembers
  • 09Mason JarMembers
  • 10Ganten BottleMembers

The first four are free. Membership unlocks all ten and is currently offered through Google Play only.

FAQ

Questions, answered

Something else? Visit Support.

Does it cost anything?

Core logging, daily goals and basic history are free, with four base bottles to choose from. Membership unlocks all ten bottles, art fonts and the full history timeline. Membership is currently offered through Google Play only; the iOS version has no in-app purchases.

Where is my water log stored?

Your hydration records, daily goal and display settings stay on your phone. Signing in only manages membership status — it does not sync your water log to the cloud.

Does it know how much I drank?

No. You log each glass yourself with a tap; the app never guesses or creates records for you.

Is this a medical tool?

No. HydroLog helps you log and see your progress. It does not provide medical diagnosis, treatment or personalised medical advice.

Which languages are supported?

English, 简体中文, Español, Português, 日本語 and 한국어 — following your phone’s language by default.

Start with a glass of water.

Download free and log today’s first glass right now.

Download on the App StoreGet it on Google Play
HydroLog launch screen: Promise me: drink 2 liters a day!