A beautiful, minimal water tracking app for iOS and Apple Watch that helps you build a sustainable hydration habit.

• Smart Water Reminders - Timely, non-intrusive notifications throughout the day
• Daily & Weekly Progress Tracking - Simple statistics to visualize hydration consistency
• Apple Health Sync - Automatically sync water intake with Apple Health
• Apple Watch App - Log water intake instantly from your wrist
• Widgets - Quick access to daily progress from your home screen

• Dark Mode - Comfortable viewing in all lighting conditions
• Custom Notifications - Personalized reminder schedules
• Streak Tracking - Motivation through daily consistency tracking
• Beautiful UI - Soft pastel colors with smooth animations

• Unlimited usage
• 100% Ad-free
• Access to all features
• All Air Apps included

H2O/
├── Models/              # Data models (WaterEntry, DailyGoal, etc.)
├── Views/               # SwiftUI views
│   ├── HomeView.swift
│   ├── StatsView.swift
│   ├── SettingsView.swift
│   ├── OnboardingView.swift
│   └── AddWaterView.swift
├── Services/            # Business logic and managers
│   ├── WaterTrackingManager.swift
│   ├── NotificationManager.swift
│   ├── HealthKitManager.swift
│   └── SiriShortcutManager.swift
├── Resources/           # Assets and color sets
└── Info.plist

H2OWatch/               # Apple Watch app
├── H2OWatchApp.swift
└── WatchHomeView.swift

H2OWidget/              # Home screen widgets
└── H2OWidget.swift

• Singleton pattern for centralized water tracking
• Manages daily entries, goals, and streaks
• Persists data using UserDefaults with JSON encoding
• Auto-cleanup of old entries (90 days)

• Local notification scheduling
• Configurable reminder intervals
• Motivational notifications on goal completion
• Foreground notification support

• Bidirectional Apple Health sync
• Water intake logging in liters
• Authorization handling
• Background sync support

The app uses a soft, calming color palette inspired by water:

• AccentColor: Teal/Cyan (#66B3CC) - Primary actions and highlights
• AccentColorLight: Light Cyan (#80CCFF) - Gradients and secondary highlights
• BackgroundTop: Very light blue (#FFEFD9) - Top gradient
• BackgroundBottom: Light cyan (#F2E5B3) - Bottom gradient
• TextPrimary: Dark gray-blue (#4D6666) - Main text
• TextSecondary: Medium gray (#809999) - Secondary text

• Rounded Corners: 16-20px for cards, 10-12px for buttons
• Shadows: Subtle shadows (opacity 0.03-0.05) for depth
• Gradients: Linear gradients for backgrounds and important CTAs
• Progress Rings: Circular progress indicators with smooth animations
• Quick Add Buttons: Grid of preset water amounts for fast logging

• waterEntries - JSON array of all water entries
• dailyGoal - JSON object of daily goal configuration
• currentStreak - Integer for current streak count
• longestStreak - Integer for best streak achieved
• hasCompletedOnboarding - Boolean for onboarding status
• isPro - Boolean for subscription status

WaterEntry {
    id: UUID
    amount: Double (ml)
    timestamp: Date
}

DailyWaterGoal {
    targetAmount: Double (ml)
    reminderInterval: Int (minutes)
    startTime: Date
    endTime: Date
}

DailyStats {
    date: Date
    totalAmount: Double
    entries: [WaterEntry]
    goalCompleted: Bool
}

• Scheduled based on user's active hours (default: 8 AM - 10 PM)
• Configurable interval (default: 60 minutes)
• Auto-reschedule on settings change
• Motivational messages on goal completion

Requested during onboarding with clear explanation of benefits.

• Real-time sync with iPhone app
• Quick add buttons (100ml, 250ml, 500ml, 750ml)
• Progress ring showing daily percentage
• Current streak display
• Goal completion indicator

Widget support for watch faces showing:

• Current progress percentage
• Total intake vs goal
• Streak count

• Progress percentage (large)
• Current intake amount
• Goal amount (small text)
• Water drop icon

• Progress ring (left side)
• Detailed stats (right side)
• App branding
• Current intake and goal

Widgets update every 15 minutes to show current progress.

• Monthly subscription: $9.99/month
• Auto-renewable subscription
• Managed through StoreKit
• Restore purchases support

• Unlimited water tracking
• Ad-free experience
• All app features unlocked
• Access to Air Apps suite

1. Notifications - For water reminders
2. HealthKit - For Apple Health sync (optional)

• No user data collection
• All data stored locally on device
• HealthKit data synced only with user consent
• Full privacy policy at: https://airapps.co/privacy

• Xcode 14.0+
• iOS 15.0+
• watchOS 8.0+
• Swift 5.7+

1. Open the project in Xcode
2. Configure signing & capabilities
3. Add HealthKit capability
4. Add Push Notifications capability
5. Configure App Groups for Watch sync
6. Build and run on device or simulator

• HealthKit
• Push Notifications
• App Groups (for Watch sync)
• WidgetKit
• Siri & Shortcuts

• Water entry logging
• Goal completion detection
• Notification scheduling
• HealthKit sync
• Watch app sync
• Widget updates
• Streak calculation
• Onboarding flow
• Settings persistence
• Subscription flow

• iMessage stickers
• Custom app icons
• Social sharing
• Export data to CSV
• Water intake insights
• Smart goal recommendations
• Integration with Fitness+ workouts

• Implement proper StoreKit 2 for subscriptions
• Add unit tests for managers
• Add UI tests for critical flows
• Implement CloudKit sync for multi-device support
• Add analytics (privacy-focused)

• Email: support@airapps.co
• Facebook: https://www.facebook.com/airappsco
• Twitter: https://twitter.com/airappsco
• Instagram: https://www.instagram.com/airappsco

Copyright © 2024 Air Apps. All rights reserved.

H2O - Building healthy hydration habits, one drop at a time.