SiteWatcher is a powerful Android application that monitors websites for content changes and notifies you when changes exceed configurable thresholds. Perfect for tracking price changes, news updates, product availability, or any web content you care about.
- Website Tracking - Monitor unlimited websites for content changes
- Change Detection - Configurable percentage threshold (1-99%) to filter noise
- Quick View Changes - Tap the percentage badge to instantly view changes
- Multiple Comparison Modes:
- Full HTML - Compare complete page source
- Text Only - Compare visible text content (ignores HTML tags)
- CSS Selector - Monitor specific page elements with include/exclude filtering
- Static (Fast) - Quick HTML fetching without JavaScript execution
- JavaScript (Dynamic) - WebView-based fetching with full JavaScript support
- Required for Single Page Applications (SPAs), AJAX content, and dynamic pages
- Configurable page load delay (0-10 seconds, default: 5s)
- Configurable post-action delay (0-10 seconds, default: 5s)
Automate page interactions before content capture - perfect for dismissing cookie consent dialogs, closing popups, or navigating to specific content.
- Click Element - Click elements using CSS selectors
- Wait - Pause for 1-60 seconds between actions
- Tap at Coordinates - Tap at specific screen positions (for iframes and shadow DOM elements)
Pre-configured patterns for common cookie consent frameworks:
- Major Frameworks: OneTrust, Cookiebot, TrustArc, Quantcast, Didomi, CookieYes, Termly, Osano, CookieFirst, Borlabs
- Generic Patterns: Language-specific reject buttons (English, French, German, Spanish)
- Site-Specific: Bandcamp and other popular sites
- CSS Selector Picker - Tap elements visually to generate selectors
- Context-aware instructions: shows "monitor" for include mode, "exclude" for exclude mode
- Pick with/without Actions - Choose whether to execute auto-click actions before picking elements
- Browse/Pick Mode Toggle - Switch between element selection and normal browsing
- Pre-select Existing Elements - Previously selected elements are automatically highlighted when reopening the picker (with smart polling for dynamic content)
- View Selected Elements - Review and remove individual CSS selectors from your selection
- Coordinate Picker - Tap anywhere to set exact tap positions with crosshair preview
- Action Tester - Test and preview complete action sequences before saving
- Action Execution in Pickers - Auto-click actions are executed before element selection to ensure accurate page state
- Real-Time Countdown - Visual countdown (X.X seconds) with decisecond precision for:
- Page load delays
- Wait/Sleep action execution
- Post-action delays after all actions complete
- Drag-to-Reorder - Arrange action execution order by dragging
- Enable/Disable - Toggle individual actions without deleting
- FAB Speed Dial - Quick menu to add Standard Action, Custom Action, or Sleep
- Tap-to-Edit - Tap any action to edit its properties
Create multiple schedules per site with flexible calendar-based rules:
- All The Time - Check continuously based on interval
- Selected Day - Check only on a specific date
- Date Range - Check between two dates (e.g., holiday sales period)
- Every Weeks - Check on selected days of the week with optional even/odd week filtering
- Periodic - Set intervals from 15 minutes to 10 hours
- Live Tracking - Real-time monitoring with second-level precision (1-960 seconds)
- Two sliders: minutes (0-15) and seconds (1-60)
- Perfect for time-sensitive monitoring (auctions, flash sales, stock availability)
- Specific Hour - Check at an exact time each day
- Multiple Schedules - Combine different schedules (OR logic - any matching schedule triggers check)
- Drag-to-Reorder - Arrange schedule priority
- Enable/Disable - Toggle individual schedules without deleting
- Duplicate - Clone schedules for quick setup
- Clear Outdated - One-tap removal of expired schedules with dramatic animations
- Removes SELECTED_DAY schedules with dates before today
- Removes DATE_RANGE schedules where end date has passed
- Live Display - See next check time counting down in real-time
- Seconds Precision - Shows seconds when under 1 minute
- Dramatic Effect - Shows tenths (X.X sec) when under 10 seconds with rapid updates
Customize how you're alerted when site changes are detected. Stack multiple actions that execute when changes exceed your threshold.
- Notification - Standard Android notification (default)
- Send SMS - Auto-send SMS to a configured phone number
- Trigger Alarm - Play alarm sound until dismissed (configurable duration)
- Play Sound - Play a notification/ringtone sound (configurable duration)
- Camera Flash - Strobe the camera flash (configurable speed and duration)
- Vibrate - Vibrate with customizable pattern and duration
- Sequential (default) - Execute actions one after another in order
- All At Once - Execute all actions simultaneously using parallel threads
- Drag-to-Reorder - Arrange action execution order by dragging
- Enable/Disable - Toggle individual actions without deleting
- Duplicate - Clone actions for quick setup
- Duration Control - Configure how long timed actions run (1-120 seconds)
- Discover Sites - Browse the web directly within the app
- Quick Add - One tap to start monitoring any page you visit
- Smart Navigation - When editing a site, the browse button opens directly to the site's URL
- Home Button - Quickly return to your preferred search engine while browsing
- Search Integration - Choose your preferred search engine (DuckDuckGo, Google, Bing, Qwant)
- Open in WebView - Test sites with JavaScript fetch mode
- Diff Viewer - Visual comparison of changes with mode-aware viewing options
- Quick Access - Tap the percentage badge to instantly open the diff viewer
- Mode-Aware Views - Available views depend on comparison mode:
- Full HTML mode: Changes Only, Rendered View, and Full Text Diff
- Text Only mode: Text Diff only (no rendering needed)
- CSS Selector mode: Text Diff only (partial HTML not renderable)
- Changes Only (Default for Full HTML) - Rendered page with changed elements highlighted in red
- Rendered View - Side-by-side comparison of before/after pages
- Full Text Diff - Complete line-by-line diff with context
- Smart Display Order - Additions shown first, then removals for better readability
- Color Coding - Green for additions, red for removals
- Statistics - See exactly how many lines changed
- View Comparison Data - See raw content used for comparison
- Word Wrap Toggle - Better readability for long lines
- Mode Display - Shows current comparison mode and capture timestamp
- View Excluded Elements - When CSS exclude filters are applied, see which elements were filtered out
- Export All Sites - Save all monitored sites to a JSON file
- Export Single Site - Export individual sites from the context menu with domain-based filenames
- Import Sites - Restore from backup or share configurations
- Content Backups - View and manage stored page snapshots
- Backup Viewer - View rendered page or source code for any backup
- Minimum Text Length - Filter short text blocks (timestamps, counters)
- Minimum Word Length - Filter short words ("a", "an", "the", numbers) in TEXT_ONLY mode
- Boolean Search - AND, OR, NOT operators with grouping support
8 beautiful themes to personalize the app:
- Orange Fire
- Blue Light
- Forest Green
- Ocean Blue
- Synthwave
- Coastal Sunset (default)
- Nordic Red
- Neon Carnival
- Check All - Manually trigger checks for all sites at once
- Duplicate Sites - Quickly clone site configurations
- Auto-Resume - Monitoring continues after device restart
- Network Options - WiFi only, mobile data, or both
- Debug Mode - Enable logging for troubleshooting
| Site List | Add/Edit Site | Browser Discovery |
|---|---|---|
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| Diff Viewer | Settings | Action Editor |
|---|---|---|
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- Download the latest APK from Releases
- Enable installation from unknown sources if prompted
- Install the app on your Android device
When first launching the app, you'll be asked for:
- Notifications - Required to alert you of changes
- Exact Alarms - Required for precise scheduling
- Accessibility Service (optional) - Required only for "Tap at Coordinates" actions
- Send SMS (optional) - Required only for "Send SMS" feedback actions
- Camera (optional) - Required only for "Camera Flash" feedback actions
- Vibrate - Automatically granted for vibration feedback
- Tap the + floating button
- Enter the website URL or tap Browse (🌍) to discover sites
- If a URL is already entered, Browse opens directly to that site
- Use the Home icon to return to your search engine
- Configure monitoring options:
- Name (optional) - Custom display name
- Comparison Mode - How to detect changes
- Fetch Mode - Static (fast) or JavaScript (dynamic)
- CSS Include/Exclude - Filter which elements to compare (for CSS Selector mode)
- Calendar Schedules - Set up one or more schedules
- Threshold - Minimum change percentage to notify
- Tap Save
- In the Add/Edit screen, tap Calendar Schedules
- Tap the + FAB to add a schedule type:
- Execute All The Time - Always active
- Selected Day - Pick a specific date
- From Date To Date - Set a date range
- Every Weeks - Choose days and week parity
- Configure the interval:
- Periodic - Check every 15 minutes to 10 hours
- Live Tracking - Check every 1 second to 16 minutes (for real-time monitoring)
- Specific Hour - Check at an exact time each day
- Toggle schedules on/off as needed
- Drag to reorder priority
- Tap the broom icon to clear outdated schedules
For sites with cookie consent dialogs or dynamic content:
- In the Add/Edit screen, set Fetch Mode to "JavaScript"
- Scroll to Auto-Click Actions section
- Tap the + FAB to add actions:
- Add Standard Action - Choose from built-in patterns
- Add Custom Action - Pick elements visually
- Add Sleep - Add delays between actions
- Drag actions to reorder, toggle to enable/disable
- Tap Test Actions to preview the sequence
- Real-time countdown displays during Wait/Sleep actions
- Countdown also shows for post-action delay after completion
Customize how you're alerted when changes are detected:
- In the Add/Edit screen, scroll to Feedback Actions section
- Tap Edit Feedback to manage actions
- Tap the + FAB to add action types:
- Notification - Standard push notification
- Send SMS - Auto-send text message
- Trigger Alarm - Play alarm sound
- Play Sound - Play notification sound
- Camera Flash - Strobe flashlight
- Vibrate - Vibration pattern
- Configure each action's parameters (duration, phone number, etc.)
- Drag to reorder, toggle to enable/disable individual actions
- Choose Play Mode: Sequential or All At Once
- Sites are checked automatically based on your schedule
- Pull down to see the latest status
- Tap the percentage badge to quickly view changes
- Long-press a site for quick actions:
- Open in Browser
- Open in WebView
- Test Actions
- Edit
- Duplicate
- Export Site
- Check Now
- View Changes
- View Data
- Delete
| Mode | Best For | Description |
|---|---|---|
| Full HTML | Technical changes | Detects any change including invisible elements |
| Text Only | Content updates | Ignores styling, focuses on readable text |
| CSS Selector | Specific elements | Monitor only matching elements with include/exclude filtering |
The CSS Selector mode supports advanced filtering with two clearly labeled fields:
| Field | Default Placeholder | Behavior | Example |
|---|---|---|---|
| Include CSS | "All CSS Included" | Elements to monitor (empty = all elements) | .product-price, #stock-status |
| Select CSS to exclude | "No elements to exclude" | Elements to filter out from comparison | .ad-banner, .timestamp, .counter |
Each field has a visual picker button - tap to open the interactive element picker where you can select elements by tapping on them directly. The picker shows context-aware instructions based on whether you're selecting elements to include or exclude.
Use cases:
- Include only product prices: Include =
.price - Monitor everything except ads: Include = (empty), Exclude =
.advertisement - Watch specific section without timestamps: Include =
#main-content, Exclude =.last-updated
| Mode | Best For | Description |
|---|---|---|
| Static | Simple pages | Fast HTML fetch, no JavaScript |
| JavaScript | Dynamic content | Full WebView rendering, supports SPAs and AJAX |
| Type | Best For | Description |
|---|---|---|
| Click Element | Buttons, links | Uses CSS selector to find and click element |
| Wait | Animations, loads | Pauses 1-60 seconds before next action |
| Tap at Coordinates | iframes, shadow DOM | Taps at exact screen position via Accessibility Service |
| Type | Best For | Configuration |
|---|---|---|
| Notification | Default alerts | Standard Android notification |
| Send SMS | Remote alerts | Phone number, auto-sends when change detected |
| Trigger Alarm | Urgent alerts | Sound selection, duration (0 = indefinite until dismissed) |
| Play Sound | Audio alerts | Sound selection, duration (1-120 seconds) |
| Camera Flash | Visual alerts | Flash speed (fast/medium/slow), duration |
| Vibrate | Silent alerts | Vibration pattern, duration |
| Mode | Behavior | Best For |
|---|---|---|
| Sequential | Actions run one after another | Ordered alerts (notify → then vibrate → then sound) |
| All At Once | All actions start simultaneously | Maximum attention (sound + flash + vibrate together) |
| Type | Use Case | Example |
|---|---|---|
| All The Time | Continuous monitoring | Check every 30 minutes, always |
| Selected Day | One-time events | Check only on Dec 25, 2025 |
| Date Range | Limited periods | Check during Black Friday week |
| Every Weeks | Recurring patterns | Check Mon/Wed/Fri, or even weeks only |
| Type | Use Case | Example |
|---|---|---|
| Periodic | Frequent checks | Every 30 minutes, 2 hours, etc. |
| Live Tracking | Real-time monitoring | Every 30 seconds, 2 minutes, etc. |
| Specific Hour | Precise timing | At exactly 9:00 AM |
| Scenario | Schedules |
|---|---|
| Business hours monitoring | Every Weeks (Mon-Fri) + Specific Hour (9:00 AM) |
| Sale period + regular | Date Range (Nov 25-30) + Every 15min, All The Time + Every 2h |
| Weekend only | Every Weeks (Sat, Sun) + Periodic (1 hour) |
| Auction countdown | Selected Day (auction date) + Live Tracking (every 30 sec) |
| Flash sale watch | Date Range (sale period) + Live Tracking (every 10 sec) |
- Low (1-10%) - Detect minor changes, may include dynamic content
- Medium (10-30%) - Balance between sensitivity and noise
- High (30%+) - Only major content overhauls
| Query | Matches |
|---|---|
news |
Sites containing "news" |
google AND news |
Sites with both "google" and "news" |
google OR bing |
Sites with either term |
NOT facebook |
Sites without "facebook" |
(google OR bing) AND news |
Complex grouping |
- Android 14 (API 34) or higher
- Permissions: Notifications, Exact Alarms, Vibrate
- Optional: Accessibility Service (for Tap at Coordinates actions)
- Optional: Send SMS (for SMS feedback actions)
- Optional: Camera (for Camera Flash feedback actions)
- Pattern: Single Activity with Navigation Component, MVVM with Repository
- Database: Room for persistent storage with migrations
- Networking: OkHttp + Jsoup for static content, WebView for JavaScript
- Background: AlarmManager with exact alarms
- Accessibility: Custom service for tap gesture execution
com.ltrudu.sitewatcher/
├── accessibility/ # Accessibility service for tap gestures
├── data/
│ ├── dao/ # Room DAOs
│ ├── database/ # Room Database with migrations
│ ├── model/ # Entity classes (WatchedSite, Schedule, AutoClickAction,
│ │ # FeedbackAction, FeedbackActionType, FeedbackPlayMode)
│ └── repository/ # Data access layer
├── ui/
│ ├── sitelist/ # Main site list
│ ├── addedit/ # Add/Edit forms, schedule, action, and feedback management
│ ├── selector/ # Interactive pickers (CSS, coordinates, tester)
│ ├── browser/ # Built-in browser
│ ├── diff/ # Diff viewer
│ ├── dataviewer/ # View comparison data
│ ├── backups/ # Backup manager and viewer
│ ├── settings/ # App settings
│ ├── view/ # Custom views (TapCrosshairView)
│ └── about/ # About screen
├── background/ # Schedulers and receivers
├── network/ # HTTP client, WebView fetcher, auto-click executor,
│ # feedback action executor
├── notification/ # Notification handling
└── util/ # Utilities, theme manager, logger
- Android Studio Hedgehog or newer
- JDK 11+
- Android SDK 34+
# Clone the repository
git clone https://github.com/YourUsername/SiteWatcher.git
cd SiteWatcher
# Build debug APK
./gradlew assembleDebug
# Build release APK (requires signing configuration)
./gradlew assembleReleaseThe APK will be in SiteWatcher/build/outputs/apk/
Contributions are welcome! Here's how you can help:
- Fork the repository
- Create a feature branch (
git checkout -b feature/amazing-feature) - Commit your changes (
git commit -m 'Add amazing feature') - Push to the branch (
git push origin feature/amazing-feature) - Open a Pull Request
- Follow existing code style and patterns
- Use
strings.xmlfor all user-facing text (no hardcoded strings) - Test on multiple Android versions when possible
- Update documentation for new features
- Ensure Exact Alarms permission is granted in Settings
- Check that battery optimization is disabled for SiteWatcher
- Verify the site is enabled (toggle is on)
- Grant Notification permission in Settings
- Check that notifications are enabled for the app in system settings
- Ensure the change exceeds your configured threshold
- Ensure Fetch Mode is set to "JavaScript"
- Check that actions are enabled (toggle is on)
- Use Test Actions to verify the sequence works
- For Tap at Coordinates, enable the Accessibility Service
- Enable SiteWatcher Accessibility Service in Android settings
- The app will prompt you when TAP_COORDINATES actions exist
- Ensure coordinates are correct using the Coordinate Picker
- Increase check intervals to reduce frequency
- Use WiFi-only mode to avoid mobile data checks
- Reduce the number of monitored sites
- Use Static fetch mode when JavaScript isn't needed
- SMS not sending: Grant SMS permission in Android settings
- Camera flash not working: Grant Camera permission, ensure device has flash
- Alarm not playing: Check device volume, ensure sound is selected
- Vibration not working: Ensure device is not in silent mode (some devices)
- Actions not triggering: Verify actions are enabled (toggle is on)
- Wrong execution order: Check Play Mode setting (Sequential vs All At Once)
This project is released into the public domain under the Unlicense.
You are free to copy, modify, publish, use, compile, sell, or distribute this software for any purpose, commercial or non-commercial.
Dependencies are subject to their own licences. Check links for more informations.
- OkHttp - HTTP client
- Jsoup - HTML parser
- Material Design 3 - UI components
If you find SiteWatcher useful, consider supporting its development:
Your support helps keep this project alive and enables new features!
Made with care for people who need to stay informed.
❤️ Made with Claude.ai ❤️