# Rainu: Water Tracker, Reminder — Drink Water & Hydration Intake

> Drink Water & Hydration Intake (iPhone/iPad app by Goncalo Baiao.)

- Source: https://appshunter.io/ios/app/rainu-water-tracker-reminder/id6822005370 (this page in markdown: same URL + `.md`)
- Developer: [Goncalo Baiao](https://appshunter.io/developer/1894228332)
- Category: Health & Fitness
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 6 MB
- Languages: American English, French (France), German (Germany), Brazilian Portuguese, European Spanish
- Released: 2026-10-28
- Data updated: 2026-11-02

## What is Rainu?

Rainu makes drinking water a habit you'll actually keep, with a little help from Droplee.

Droplee is your hydration buddy. When you're on track, Droplee is bright and bouncy. Forget to drink for a while and Droplee gets visibly thirsty. Hit your goal and Droplee celebrates with you. No guilt, no nagging: just a friend who's always there for your next sip.

A DAILY GOAL MADE FOR YOU
Answer a few quick questions and Rainu estimates a daily water goal from your weight, activity, climate and life stage, using published general guidance (EFSA, ACSM). See exactly how it's calculated. On hot days, Rainu can raise it a little using your local weather.

LOG IN SECONDS
• Three quick-add buttons for your usual glass, mug or bottle, named the way you like
• Water, coffee, tea, juice, milk and soda, each counted by its typical water content
• Undo a mistake instantly
• Log from a widget, or just ask Siri

SMART, GENTLE REMINDERS
• A good-morning nudge with your first glass
• After a week, Rainu learns your routine and only nudges you when you're behind your own rhythm
• Quiet time before bed, so nothing buzzes while you wind down
• Choose a firm, balanced or gentle tone

SEE YOUR PROGRESS
• A bottle that fills up as you drink, with milestones along the way
• Daily streaks, plus seals for 7, 30 and 100 days
• Weekly and monthly charts

WIDGETS
See your progress on the Home Screen, Lock Screen or in StandBy, and log a drink right from the Home Screen or StandBy widget.

APPLE HEALTH
With your permission, Rainu saves the water you log to Apple Health, plus an estimate of the caffeine in coffee, and can read your weight and exercise to suggest your goal.

MILLILITRES OR OUNCES
Use ml and kg, or fl oz and lb.

YOUR DATA STAYS YOURS
No account, no sign-up, no ads, no tracking. Your logs stay on your iPhone.

Rainu is a wellness app, not a medical device. If you have a health condition, or your doctor has given you a fluid target or limit, follow their advice. You can enter that number in Rainu.

## Is Rainu safe?

Not enough ratings yet to assess Rainu.

## Is Rainu legit?

Rainu: Water Tracker, Reminder has limited verification signals. The AppsHunter Legitimacy Score for Rainu is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 3 releases)

### 1.0.2 — 2026-10-31

Minor maintenance update.

### 1.0.1 — 2026-10-28

Rainu now speaks German, French, Spanish and Portuguese (Brazil and Portugal), including reminders and Siri. Plus small fixes.

### 1.0 — 2026-10-28

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-02.*