A simple passport strength comparison tool built with Flutter. It fetches data via the Passport Index API, supporting comparisons of up to 5 passports, rank tracking, favorite snapshots, and PDF report exports.
The goal of this project is to solve a simple need: "a simple and straight comparison among passports." This toolbox focuses on a clean, fast, and intuitive interface to compare visa-free access across different countries.
- Multi-Country Sync Comparison: Compare 1 to 5 passports simultaneously to visualize visa access differences side-by-side.
- Historical Data Tracking: Toggle between different years (from 2006 to present) to observe trends in passport power evolution.
- Smart Favorites System:
- Custom Titles: Rename comparison sets when saving to your favorites.
- Snapshot Technology: Automatically encapsulates current rank, region, and visa-free totals during save. This ensures accurate previews even if the API data changes or the device is offline.
- Export & Share:
- Full PDF Reports: Generate professional documents containing summaries and detailed access lists.
- Diff Only Export: Specifically filter out countries with identical visa treatments, highlighting only the differences to improve report readability.
- Full-Screen Screenshots: One-tap capture and sharing of comparison results via the native system share sheet.
- Framework: Flutter (Channel Stable)
- Data Storage: SharedPreferences (For local persistence of favorites)
- PDF Generation: pdf & printing (Integrated Google Fonts to resolve CJK font missing issues)
- Sharing: screenshot & share_plus
- Flutter SDK:
^3.0.0 - Dart SDK:
^3.0.0
- Clone the repository:
git clone https://github.com
- Install dependencies:
flutter pub get
- Run the app (Web/Chrome):
flutter run -d chrome
Select up to 5 countries and specific years. The tool instantly fetches the Rank and Visa-Free Score. Click "Details" to see a full country-by-country access breakdown.
Save frequent comparisons with custom names.
Choose between a Full Report or a Difference-Only Report. The "Diff Only" mode is perfect for travelers who only want to know which destinations require a visa for one passport but not the other. View Full Report Sample (PDF) View Difference-Only Report Sample (PDF)
