# Waterd — AI hydration on autopilot

> AI hydration on autopilot (iPhone/iPad app by Wenjie Zhang.)

- Source: https://appshunter.io/ios/app/waterd/id6761774902 (this page in markdown: same URL + `.md`)
- Developer: [Wenjie Zhang](https://appshunter.io/developer/1891409645)
- Category: Health & Fitness
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 11 MB
- Languages: English
- Released: 2026-04-30
- Data updated: 2026-07-08
- User reviews in markdown: https://appshunter.io/ios/app/waterd/id6761774902/reviews.md

## What is Waterd?

The hydration tracker you never open.

Waterd uses Apple Intelligence on supported devices to set your daily water goal based on your activity, the weather, and how you've been hydrating this week — automatically, on-device, no cloud. On devices without Apple Intelligence, Waterd uses a built-in formula based on your weight, activity, and weather forecast.

Then it gets out of your way. Tap your bottle from the Home Screen widget, the Lock Screen, the Dynamic Island, your Apple Watch, or a notification action. Each tap is one drink, logged in under five seconds. The app exists for weekly reflection, not daily logging.

PREMIUM — three ways to unlock
  • Monthly — $1.99/month with a 7-day free trial
  • Yearly — $4.99/year
  • Lifetime — $7.99 one-time purchase

All three unlock the same premium features:
  • Personalized daily hydration goals that account for your activity and the
    weather
  • Weekly insights that explain your hydration patterns in plain English
  • Runs entirely on-device where Apple Intelligence is available

ZERO FRICTION
  • Home Screen interactive widgets
  • Lock Screen widgets and StandBy support
  • Apple Watch complications and Smart Stack widget
  • Live Activity in the Dynamic Island
  • Notification action buttons that log without opening the app

PRIVATE BY DESIGN
  • All data stays on your device. No accounts, no email collection.
  • Apple Intelligence runs entirely on-device where available.
  • HealthKit-compatible. Your water intake syncs with Apple Health.
  • No tracking. No ads. No social feeds.

HOW GOALS ARE CALCULATED
Waterd suggests goals based on widely-cited references (National Academies of Sciences, Mayo Clinic, ACSM, CDC). Full sources and citations are inside the app under Settings → How goals are calculated, and from every screen where the goal is shown. Waterd is a general wellness app and is not a medical device.

SUBSCRIPTION TERMS
Monthly and Yearly are auto-renewable subscriptions charged to your Apple ID. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Free trial converts to a paid subscription at the end of the trial. Manage or cancel in Settings → Apple ID → Subscriptions.

Terms of Use: https://www.tapwaterdata.com/terms/app
Privacy Policy: https://www.tapwaterdata.com/privacy/app

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Waterd Premium | $1.99 | per month |
| Waterd Premium | $4.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Waterd Premium Lifetime | $7.99 | one-time |



## Version history (last 4 releases)

### 1.2.1 — 2026-05-25

Reliability fixes for surface logging:

• Dynamic Island now updates immediately when you log a drink from the Home Screen widget or Control Center
• Control Center tile gives clear visual feedback on every tap
• Background widget reloads route through a unified refresh path so all surfaces stay in sync

### 1.2 — 2026-05-03

Open tapwaterdata.com links straight in the app.
Sharper app icon — no more dark corners.
Faster widget taps and snappier Live Activity updates.
Region-aware water quality and metric units for everyone outside the US.

### 1.1 — 2026-04-30

International availability. Metric (ml, L) unit support. Water quality data remains US-only for now.

### 1.0 — 2026-04-29

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 2026-07-08.*