Drink smarter.
Stay full to the brim.
Brim tracks your water intake with smart goals, Apple Health sync and fast drink shortcuts. Start with 150 ml, 250 ml and 500 ml water presets, then configure every slot your way.
Free · iOS 17+ · iPhone & iPad
Everything your hydration needs
From quick logging to deep health insights — Brim keeps it simple without cutting corners.
Quick Logging
Add water in one tap. The free setup starts with 150 ml, 250 ml and 500 ml water shortcuts, with a slider for any custom volume.
Configurable Slots Updated
Change each shortcut's amount and drink type. Existing users keep their configured slots after updates instead of being reset.
More Slots with Pro Pro
Free includes three daily quick-add slots. Pro unlocks up to six slots and leaves new slots empty until you choose what belongs there.
Adaptive Hydration Pro
Your daily target adjusts automatically based on weather, steps, sleep, menstrual cycle, altitude and workouts.
Weather Aware
Hot day? Brim raises your goal. WeatherKit integration ensures you always drink the right amount for the conditions.
Apple Health Sync
Reads steps, sleep, weight and workouts. Writes back hydration, caffeine and alcohol standard drinks — your Health app stays complete.
Insights Lab Pro
Brim Pro looks for connections between your logged hydration and sleep, steps and workouts, entirely on your device. The Lab can also surface weekly patterns in your drinking habits when a new trend appears over time.
Experimental observation only. Not medical advice; correlation is not causation. Runs on-device.
Home Screen Widget
See your progress at a glance. Tap the +250ml button directly on your widget — no app launch needed. Pro
All Drink Types Pro
Water, tea, coffee, espresso, juice, beer, wine and spirits — each with real hydration factors. Coffee, espresso and tea write caffeine to Health automatically.
Heat-Smart Reminders Pro
Reminders adapt to your drinking tempo — and the weather. Above 28 °C with 90+ minutes of inactivity, Brim sends an urgent nudge automatically.
Streaks & Badges Pro
Earn daily streaks for hitting your goal. Unlock achievement badges at 3, 7, 14 and 30-day milestones to stay motivated long-term.
Live Activities Pro
Your hydration progress lives in the Dynamic Island and Lock Screen — always visible without opening the app. Updates in real time as you log.
Apple Watch App
Log water from your wrist with a single tap. Circular progress ring and quick-add buttons sync instantly with your iPhone via HealthKit.
Workout Tracking Pro
HealthKit workouts are analyzed with heart-rate intensity: +500 ml/h moderate, +800 ml/h above 150 bpm. Push alert when a workout ends.
Cycle Adjustment Pro
During the luteal phase, your water needs increase. Brim detects it via Apple Health and adds +300 ml automatically.
Altitude & Flight Pro
Hiking at altitude or flying? Brim detects dry conditions and adds +300–500 ml for mountain air or cabin dehydration.
Drinking Schedule Pro
Set fixed time slots throughout the day instead of one total goal. The current slot is always centered so you know what's next.
6 Languages New
Fully localised in English, German, French, Italian, Japanese and Korean — every screen, every notification, every number format.
Your goal, automatically dialed in
Brim Pro calculates a personalised daily target by combining up to seven live signals — so your hydration goal is always right for today, not just an average.
Try Pro free for 7 daysBody Weight
Base goal: weight × 35 ml/kg
Temperature
+300 ml for 31°C outdoor heat
Steps
+150 ml for 8,000+ steps today
Sleep
+200 ml after less than 6 h sleep
Workout
+800 ml for a 1 h run at 155 bpm
Cycle
+300 ml during luteal phase
Altitude
+300 ml above 1,500 m elevation
Today's Smart Goal
All factors combined
Simple, honest pricing
Start free. Upgrade whenever you want — or never. No tricks, no dark patterns.
- Water tracking
- 3 configurable quick-add water slots
- 150 ml, 250 ml and 500 ml defaults
- Daily goal based on weight
- 3 daily reminders
- Entry history
- Dark mode
- Everything in Free
- Adaptive hydration (weather, steps, sleep, cycle, altitude, workouts)
- 6 configurable quick-add slots
- All drink types incl. coffee, espresso and alcohol
- Drinking schedule with fixed times
- Custom reminder intervals
- On-device hydration insights (Lab)
- Statistics, streaks & badges
- Home screen widgets (all sizes)
- Workout detection & push alerts
- Caffeine & alcohol Health sync
- Everything in Free
- Adaptive hydration (weather, steps, sleep, cycle, altitude, workouts)
- 6 configurable quick-add slots
- All drink types incl. coffee, espresso and alcohol
- Drinking schedule with fixed times
- Custom reminder intervals
- On-device hydration insights (Lab)
- Statistics, streaks & badges
- Home screen widgets (all sizes)
- Workout detection & push alerts
- Caffeine & alcohol Health sync
English guides for hydration decisions
Helpful pages for people who want a clear daily target, better reminders and a simple way to notice dehydration early.
How much water should I drink?
Daily intake basics, practical formula and the main factors that change the target.
Hydration at altitude
Why water needs rise 30–40% at altitude and how much to drink when hiking and mountaineering.
Hydration when flying
Why dry cabin air dehydrates you and worsens jet lag — how much frequent flyers should drink.
Heatwave hydration
English guide for hydration during heat waves, sleep loss and outdoor activity.
Electrolytes & hydration
Why water alone isn't enough when you sweat — sodium, potassium and magnesium for sport, heat and keto.
Water intake calculator
Estimate a rough daily hydration target from weight, activity and temperature.
Hydration reminder
Why reminders work better when they fit a real routine instead of random alerts.
Dehydration symptoms
Early warning signs, later symptoms and when the situation becomes serious.
Water tracker app
Why the right tracker makes hydration easier to keep up every day.
Water intake by weight
Use body weight as a practical baseline for your daily water target.
How to drink more water
Build a routine that makes the next sip obvious without relying on willpower.
Water tracker with Apple Health
Connect hydration with steps, sleep, weight and workouts on your iPhone.
Water tracker widget
Keep your hydration goal visible on the home screen throughout the day.
Frequently asked questions
What is new in the latest version?
New users now start with three practical water shortcuts: 150 ml, 250 ml and 500 ml. Existing users keep their own configured shortcuts during updates. Brim Pro unlocks three additional slots, but leaves them free so you can decide whether they should be espresso, tea, coffee, juice or another drink.
Is Brim free to download?
Yes. Brim is completely free to download and use. The free version includes water tracking, three configurable quick-add water slots, a weight-based goal, reminders and history. Brim Pro unlocks six quick-add slots, smart goals, statistics, all drink types, custom reminders and widgets. Choose between €1.99/month or €9.99/year (save 16%) — both come with a 7-day free trial.
Does Brim sync with Apple Health?
Yes. Brim reads steps, sleep, weight, workouts and menstrual cycle data from Apple Health. It writes back hydration, caffeine and alcohol standard drinks automatically.
What are Insights?
Insights are an experimental Brim Pro Lab feature. Brim checks, on your device, whether your logged hydration appears connected with sleep, steps or workouts, and can point out new drinking patterns at most once a week. These are private observations only, not medical advice, and correlation does not mean causation.
How does the Smart Goal work?
Brim Pro starts with your weight × 35 ml, then adds adjustments for outdoor temperature, step count, sleep quality, menstrual cycle phase, altitude and workouts. The goal is recalculated every day with up to seven live signals.
Do the home screen widgets work interactively?
Yes! On iOS 17 and later, Brim's widgets include tap targets to add water directly — for example +150 ml, +250 ml or +500 ml — without opening the app.
Can I cancel Brim Pro anytime?
Absolutely. Brim Pro is a standard annual App Store subscription. You can cancel at any time in your iPhone's Settings → Apple ID → Subscriptions. Your Pro access continues until the end of the paid period.
What is a Live Activity and how does Brim use it?
Live Activities show real-time information in the Dynamic Island (iPhone 14 Pro+) and on your Lock Screen. Brim uses this to display your current hydration progress — total drunk, percentage complete and goal — without you having to open the app. It updates every time you log a drink.
How do Streaks and Badges work?
Every day you hit your hydration goal counts as one day in your streak. Brim tracks your current streak and personal record. You unlock achievement badges at 3, 7, 14 and 30 consecutive days — a fun way to build a lasting habit.
What iPhone models and iOS versions are supported?
Brim requires iOS 17 or later and runs on iPhone and iPad. Interactive widgets require iOS 17+. Live Activities require iPhone 14 Pro or later (Dynamic Island). The app is optimised for iPhone 15 and iPhone 16 Pro screen sizes.
More from JDL Software
CaffSense – Caffeine & Sleep · Then – Voice Time Capsule · All apps