Water reminder schedule
Your bottle, spread across your day.
You bring the goal and the bottle. This works out how many bottles that is, spaces them evenly between waking up and winding down, and hands you the times.
Units
This page does not tell you how much to drink. Use the goal you already have, or one your doctor gave you.
The calendar file repeats every day with an alert at each time. Open it on your phone and choose Add.
How the schedule is worked out
- Bottles. Your goal divided by your bottle size, rounded up. A 64 oz goal and a 16 oz bottle is four bottles.
- Window. From when you wake to your chosen cut-off before bed, so the last reminder does not land at lights-out.
- Spacing. The first bottle starts when you wake, the last finishes at the cut-off, and the rest are spread evenly between. Times are rounded to the nearest five minutes.
A reminder time is when to finish a bottle by, not a moment to drink it all at once. Sip through the gap before it.
Making reminders stick
- Tie them to things you already do. If a time lands near a meal, a commute or a regular meeting, nudge it to match.
- Keep the bottle in sight. A reminder for a bottle that is in another room mostly gets dismissed.
- Fewer, bigger is fine. If eight alerts a day would annoy you, use a larger bottle and get four.
When you want it to count for you
Tap the bottle you just finished. That’s the log.
Dropkin is a water tracker and water reminder for iPhone built around the bottle you already carry. Save it once with its real capacity, then one tap logs the whole thing, with ½ and ¼ buttons beside it.
It works in ounces or millilitres and litres, and reminders and Hydration Pace are part of the free tracker. No account, no ads, and it works offline.
Get Dropkin on the App StoreThe full water tracker is free: unlimited logging, saved vessels, reminders, widgets and 30-day history. Optional Pro adds extra styles and longer history. Requires iOS 18 or later. Details checked against the App Store listing on November 10, 2026.
Publisher disclosure: Honest Little Apps publishes both Dropkin and this page. This is not an independent review. This page is a separate web companion, not a feature of the app. General habit-planning information, not medical advice.
Questions
How often should a water reminder go off?
As often as it takes to finish your own goal with the bottle you use. Divide the goal by the bottle size to get the number of reminders, then space them evenly through your waking hours. A 64 oz goal with a 16 oz bottle is four reminders.
What is a good water drinking schedule?
One that is evenly spread, starts soon after you wake and ends a couple of hours before bed. Even spacing means you sip steadily and are not catching up late in the evening.
Should I stop drinking water before bed?
Many people finish their last bottle two hours or so before bed so they are not up in the night. This builder lets you set that gap from zero to four hours. If you have a medical reason to drink at specific times, follow that advice.
How do I add water reminders to my phone calendar?
Use the Add to my calendar button. It downloads a small calendar file with one daily repeating event per reminder, each with an alert. Open the file on your phone and add the events.
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