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.

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

How it works
LOG · HYDRATE · REPEAT
- 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.
- 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.
- 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.


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.
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.

