Pendum Hydration
Fluids, caffeine and alcohol, logged in one tap
Pendum Hydration is a one-time purchase water intake tracker for iPhone, Android and Apple Watch that logs drinks toward a daily goal with caffeine and alcohol totals and reminders, and keeps the log on the phone with no account.
- iPhone
- Android
- Apple Watch
- App StoreComing soon
- Google PlayComing soon
Pendum Hydration is not in the stores yet. The water calculator is free now, and Pendum One is in the App Store and on Google Play today.
- No account
- No analytics
- Records on your phone
Daily fluid goal 2,500 mL
At a glance
- Sold as
- One-time purchase
- Price
- $4.99, paid once when you download it. No subscription.
- Account
- None
- Works offline
- Yes
- Platforms
- iPhone, Android and Apple Watch
- Apple Watch
- Yes, with the iPhone app
- Health sync
- Off until you turn it on
- Backup
- None in the app, and no export; deleting the app removes the log.
- Analytics
- None: no analytics, crash reporting or ads, and no network requests of its own.
- Languages
- 11 languagesEnglish, Spanish, French, German, Italian, Portuguese, Dutch, Swedish, Japanese, Korean and Simplified Chinese
- Units
- Metric (mL, kg) or US (fl oz, lb). The starting choice follows your region.
- Facts checked
What it does
Pendum Hydration is a water intake tracker for iPhone, Android and Apple Watch that logs drinks, caffeine and alcohol in one tap, with no account.
One tap logs a drink
Today shows your favorite drinks in a grid, and one tap logs a drink at the selected size. Undo takes it back.
41 drinks ready to log
Presets cover water, coffee, tea, juice, milk, energy drinks and alcohol. Add your own drinks with a size, caffeine and alcohol by volume.
A daily fluid goal
Non-alcoholic drinks count toward the goal, coffee and tea included. It starts at 2,500 mL, and you set your own.
Caffeine and alcohol totals
Today shows caffeine in milligrams and pure alcohol in grams beside your fluid progress. Caffeine scales with the size you log.
Reminders that follow your day
Set a wake-up time and bedtime for the week or for each day. A reminder comes each hour only when you are behind plan, and none come in the wind-down before bed.
History by day, week or month
Each period shows total fluids, a daily average, caffeine and alcohol, then the drinks logged each day.
Every entry stays editable
Change a drink, its size or when it was logged. Delete it, and Undo brings it back.
Optional BAC estimate
Off by default, and a rough estimate only: never use it to decide whether to drive. With it on and a body weight entered or read from the health app, Today shows an estimated blood alcohol content and a 6-hour trend.
Works with your phone and watch
Apple Watch app
The watch shows today’s progress and up to 24 favorites. Turn the Digital Crown to browse, tap one to log it, and you have 4 seconds to undo.
Log from the reminder
Each reminder has a button that logs a glass of water at your default size without opening the app.
Apple Health sync
Off until you turn it on. It exports non-alcoholic fluids, caffeine, standard drinks and any BAC estimates, and reads your latest weight for the BAC estimate.
Health Connect sync
On Android it exports non-alcoholic fluids and caffeine; alcohol and BAC stay on the phone.
Schedule from a sentence
On iPhones with Apple Intelligence, describe your routine in plain words and Apple’s on-device model sets a week of wake-up times and bedtimes. The description is not uploaded.
Your records live on your phone
Pendum Hydration needs no account and has no server of its own.
- No account
- No server
- No analytics
No account and no sign-in.
No analytics, crash reporting or ads. The app makes no network requests of its own.
Drink logs live in a database on your phone. There is no backup or export, so deleting the app removes them.
Health sync is off until you turn it on. Turning it off stops new exports and leaves earlier ones in the health app.
Reminders are local notifications scheduled on the phone. There is no push server.
The Apple Watch app talks to the iPhone app directly.
Common questions
Does Pendum Hydration need a subscription or an account?
No. Pendum Hydration is a one-time purchase with no account, no server and no subscription. Drink logs live in a database on your phone.
How much does Pendum Hydration cost?
Pendum Hydration costs $4.99, paid once when you download it. There is no subscription and nothing renews.
Does Pendum Hydration work offline?
Yes. Pendum Hydration makes no network requests of its own. Reminders are local notifications scheduled on the phone, with no push server.
Does Pendum Hydration have an Apple Watch app?
Yes. The Pendum Hydration watch app shows today’s progress and up to 24 favorite drinks. Turn the Digital Crown to browse, tap one to log it, and you have 4 seconds to undo. It needs the iPhone app.
Is Pendum Hydration on Android, and is there a Wear OS app?
Pendum Hydration runs on Android phones, and there is no Wear OS app. On Android, Health Connect receives fluids and caffeine; alcohol and BAC stay on the phone.
Does Pendum Hydration track caffeine and alcohol?
Yes. Today in Pendum Hydration shows caffeine in milligrams and pure alcohol in grams beside your fluid progress. Non-alcoholic drinks count toward the goal, coffee and tea included; alcoholic drinks do not. Caffeine and alcohol values on preset drinks are estimates.
What is the daily goal in Pendum Hydration?
Pendum Hydration’s goal starts at 2,500 mL of non-alcoholic fluids, and you set your own. It is not a personal recommendation, and progress measures what you log, not how hydrated you are.
How do Pendum Hydration reminders work?
In Pendum Hydration, set a wake-up time and bedtime for the week or for each day. A reminder comes each hour only when you are behind plan, none come in the wind-down before bed, and each reminder has a button that logs a glass of water at your default size. If the app goes unopened for about 4 days, reminders stop until you open it.
Does Pendum Hydration sync with Apple Health or Health Connect?
Only once you turn it on. Apple Health receives non-alcoholic fluids, caffeine, standard drinks and any BAC estimates, and Pendum Hydration reads your latest weight for the BAC estimate. On Android, Health Connect receives fluids and caffeine; alcohol and BAC stay on the phone.
Can I back up or export my Pendum Hydration log?
Not from the app. Pendum Hydration has no backup or export, so deleting the app removes the log.
Which units does Pendum Hydration use?
Pendum Hydration uses metric (mL, kg) or US (fl oz, lb). The starting choice follows your region.
Details
- Progress measures what you log, not how hydrated you are. The 2,500 mL starting goal is not a personal recommendation.
- The BAC estimate is a rough calculation, not a measurement. Never use it to decide whether to drive or whether someone is sober, even at 0.000%.
- Caffeine and alcohol values on preset drinks are estimates. Check the label.
- Reminders and background sync run when iOS or Android allows. If the app goes unopened for about 4 days, reminders stop.
- The Apple Watch app needs the iPhone app. Brand names in the presets do not imply endorsement.
Free calculators
No sign-up. Nothing you type is stored or sent.
More from Pendum
A subscription that syncs, or a one-time purchase.