Show HN: Corgina – Open-source pregnancy tracker I built for my wife (iOS 26)

An AI-powered iOS app for tracking pregnancy health, nutrition, and symptoms with privacy-first, on-device data storage.

⚠️ Note: Currently only compatible with iOS 26. Requires iPhone running iOS 26.0 or later.

Testflight link: https://testflight.apple.com/join/5HV3CJ7x

Short demo: https://youtube.com/shorts/tOFTKZYpN6A?si=3zC5Mllkp6Y-Q0MD

• Natural language voice commands for logging food, water, vitamins, and symptoms
• On-device speech recognition for privacy
• AI-powered nutrition estimation using OpenAI GPT-4o
• Example: "I ate tahini for lunch" → automatically logs at 12pm with nutritional data

• Food Intake: Automatic calorie and macro estimation (protein, carbs, fat)
• Hydration: Water intake tracking with customizable amounts
• Vitamins & Supplements: Schedule and track prenatal vitamins
• Symptoms: Log nausea, vomiting, and other pregnancy symptoms
• PUQE Score: Track and monitor pregnancy-related nausea severity

• 100% Private: All data stored locally on device
• No Cloud Storage: Your health data never leaves your iPhone
• Your Own API Key: Bring your own OpenAI API key for AI features
• Complete Control: Delete any log entry with swipe or context menu

• Liquid Glass UI components following Apple's latest design language
• Compact pill interface for voice interactions
• Quick-select time picker for editing log timestamps
• Swipe-to-delete and context menus throughout

• Customizable eating and drinking reminders
• Badge notifications for missed meals
• Configurable intervals (30 minutes to multiple hours)

• iOS 26.0 or later (iOS 26 only at the moment)
• iPhone (tested on iPhone 16 Pro)
• Xcode 17+ (for building and installation)
• OpenAI API key (for AI nutrition estimation and voice command processing)

1. Install Xcode:

   • Download Xcode from the Mac App Store
   • Requires macOS with Xcode 17+

2. Clone and Open:

   git clone https://github.com/benjaminshafii/corgi.git cd corgi/HydrationReminder open HydrationReminder.xcodeproj

3. Configure Signing:

   • Select the project in Xcode
   • Go to "Signing & Capabilities"
   • Select your Apple ID team
   • Change Bundle Identifier to something unique (e.g., com.yourname.corgina)

4. Add OpenAI API Key:

   • Launch the app
   • Go to More → Settings
   • Enter your OpenAI API key
   • Key is stored securely in iOS Keychain

5. Connect iPhone:

   • Connect your iPhone via USB
   • Trust the computer if prompted
   • Enable Developer Mode: Settings > Privacy & Security > Developer Mode

6. Install App:

   • Select your iPhone from the device list in Xcode
   • Click the "Run" button (▶️)
   • Trust the developer certificate on iPhone: Settings > General > VPN & Device Management

1. Accept the health disclaimer
2. Grant notification permissions for reminders
3. Grant microphone permissions for voice commands
4. Add your OpenAI API key in Settings

• Food: "I ate a banana for breakfast"
• Water: "Log 500ml of water"
• Compound Meals: "I had chicken with rice and broccoli"
• Vitamins: "Log prenatal vitamin"
• Custom Vitamins: "Add vitamin D3, twice daily"
• Symptoms: "I'm feeling nauseous, severity 7"

• Tap the floating mic button to start voice recording
• Or use the quick action buttons in the Dashboard
• Edit timestamps by tapping the time on any log entry
• Delete entries by swiping left or long-press for context menu

• Platform: iOS 26.0+
• Framework: SwiftUI with iOS 26 Liquid Glass design
• Architecture: MVVM + Actor-based concurrency
• AI: OpenAI GPT-4o for nutrition estimation and voice command parsing
• Speech: On-device speech recognition (Speech framework)
• Storage: UserDefaults + local file system (100% on-device)
• Notifications: UserNotifications framework

• No Analytics: Zero tracking or analytics
• No Cloud: All data stored locally
• API Key Security: OpenAI key stored in iOS Keychain
• On-Device Speech: Speech recognition happens on device
• Optional AI: App works without OpenAI key (manual logging only)

• Voice commands not working: Check microphone permissions in Settings
• No nutrition data: Verify OpenAI API key in More → Settings
• Notifications not working: Check Settings > Notifications > Corgina
• App won't install: Ensure iPhone is in Developer Mode
• Build errors: Check Bundle Identifier is unique and team is selected

1. Get an API key from platform.openai.com
2. Open Corgina app → More → Settings
3. Enter your API key
4. Key is securely stored in iOS Keychain

Note: The app uses GPT-4o for:

• Food nutrition estimation (~$0.01 per food item)
• Voice command parsing (~$0.005 per command)

Typical daily usage: ~$0.10-0.30 depending on voice usage.

This is a personal project, but suggestions and bug reports are welcome via GitHub Issues.

Free to use and modify for personal use.

Corgina - Your AI pregnancy health companion 🐕