Water intake tracker app free: log glasses in a health diary
Free printable blood pressure log (PDF)
A water intake tracker app freeto use should do one job well: record what you drank, in glasses or millilitres, inside the same health diary as the rest of your day. Blood Snap's Water log is that record. It is part of More Health, it does not require a watch, and logging is free with no cap on how many drinks you add.
Blood Snap is a personal wellness diary for blood pressure, blood sugar, weight, water, sleep, and steps. It is not a medical device, not a hydration prescription, and not a smart bottle. You decide the amount. The diary stores the millilitres and shows them back to you.
What you can log for free
Open More Health → Water log. The screen has two tabs, Log and Analytics. On Log you see today's total against your goal, a progress bar, and three quick adds:
- +250 ml, labelled 1 glass.
- +500 ml, labelled Bottle.
- Custom, any amount in millilitres (at least 1 ml).
Each tap saves a drink with the time. Today's drinks lists every add so you can delete one if you tapped twice. The running total is the sum of those rows. Eight glasses at 250 ml is 2000 ml, which happens to match the starting goal, but you do not have to drink in glasses. A 500 ml bottle is one row, not two glasses.
The + button on More Health can log water without opening the full screen. That sheet offers 150 ml, 250 ml, 300 ml, and 500 ml, or a custom amount. Either path stores the same kind of entry: millilitres and a time, kept on your device.
A daily water goal you set
Tap Goal in the Water log bar. The field is labelled Daily water goal and the minimum is 250 ml. A new install starts at 2000 ml. Change it if you and your clinician already use a different number. Blood Snap does not choose the goal for you and does not change it based on weather, exercise, or a blood pressure reading.
Under the progress bar the screen says Goal reachedwhen today's total meets the goal, or it shows how many millilitres are still short. That is arithmetic on the numbers you entered. It is not a score and not medical advice. If you want a nudge before you remember to open the app, a named custom health remindersuch as "Drink water" can fire on a schedule you pick. The reminder does not add the glass. You still log the amount.
Show water on Home
Water log includes Show water on dashboard. With the switch on, Home shows a water card for the day you are viewing: millilitres, the goal, and Goal reached when the total is high enough. The first time you log water, that switch turns on so the card is not hidden after you have started. You can turn it off again any time and the log itself stays.
Home can also show other More Health cards you enable, including weight, steps, sleep, and resting heart rate. Water is the one you type. Steps, sleep, and resting heart rate can be read from Apple Health or Health Connect when you switch those metrics on. Water is not read from a watch and is not written to Apple Health or Health Connect. For how those other cards work, see steps, sleep, and resting heart rate next to blood pressure.
Water analytics for 3, 7, or 30 days
The Analytics tab uses the same windows as the other More Health tools: 3 days, 7 days, and 30 days. When the period has drinks, you see:
- Days logged — days in view that have at least one entry.
- Avg / day — average millilitres per day across the window.
- Best day — the highest daily total among days you logged.
- Goals hit — how many days in the window met the goal you set.
A line chart titled Daily total plots millilitres for each day in the window. Days with nothing logged sit at zero on that chart. Empty periods say to log water before trends and goal streaks appear. None of these figures diagnose dehydration or fluid overload. They describe the diary.
Export the water log
PDF and CSV export of the selected 3, 7, or 30 day window is a Blood Snap Pro feature. The file is a water log: date and time, amount in millilitres, and a notes column. The Log screen itself records the amount and the time; it does not ask you to type a note on each glass. Export is for the rows you already saved, for the period you are viewing. Free accounts keep unlimited logging, the Home card, and the analytics. They do not include this export.
Water next to blood pressure and weight
Many people open the diary in the morning for a cuff reading and come back to it for drinks through the day. The water total does not change the blood pressure entry, and the blood pressure entry does not change the water total. They share a phone and a date, which is often what you want when you look back at a week. The cuff routine itself is covered in how to log blood pressure in a home diary. If scale weight belongs in the same week, use a weight and blood pressure log alongside the water card on Home.
What this water tracker does not do
- It does not measure urine, sweat, or fluid from food. It stores drinks you add.
- It does not connect to a smart bottle, a watch, or Apple Health for water.
- It does not set a medical fluid target or warn you about kidney, heart, or blood pressure conditions.
- It does not tell you to drink more or less because of a cuff reading.
- It does not replace care for thirst with illness, vomiting, or swelling. Follow your clinician.
Log glasses in Blood Snap's free water diary. Add 250 ml, 500 ml, or a custom amount, set your own daily goal, and review 3, 7, or 30 days on Home and in Water log. Unlimited logging is free. Export is Pro. Not a medical device and not a fluid prescription.
Educational information with public guideline citations. Not medical advice and not a diagnosis. Blood Snap is a personal wellness diary — not a medical device, blood pressure machine, glucometer, or CGM. Always follow your clinician's advice.