BorderSense

Most travelers don't realize they've overstayed a visa until it's too late. BorderSense eliminates that blind spot. It's a smart passport diary and visa day tracker that logs every border crossing and instantly calculates your remaining legal days across the Schengen Zone, UK, US, and beyond. Whether you hold one passport or several, BorderSense keeps your immigration status crystal clear, trip after trip.

Key Features

• Schengen 90/180 Rolling Window Calculator: Uses the same EU-compliant rolling window algorithm that border officers use — not a simplified approximation — so your day count is always accurate.
• Multi-Destination Trip Logging: Record entries and exits across any country, with full history stored in a clean, chronological passport diary format.
• Multi-Passport Support: Manage travel history across multiple passports and citizenships from a single profile, ideal for dual nationals and those on the path to second citizenship.
• Real-Time Days Remaining Alerts: Get notified as you approach your visa-free limit so you always have time to act before your status becomes a problem.
• UK & US Visa Rule Tracking: Beyond Schengen, BorderSense also handles UK Standard Visitor (180 days/year) and US ESTA/B1-B2 rules with the same precision.
• Offline-First Design: Your travel data is available at all times, no Wi-Fi or roaming required at the border.
• Privacy by Default: Your passport and travel data stays on your device. No account required to get started.

Benefits

• Avoid Costly Overstays: Overstaying a visa can result in bans, fines, or deportation. BorderSense gives you a real-time safety net with zero ambiguity.
• Replace the Spreadsheet: Frequent travelers and expats waste hours managing stay limits in Excel. BorderSense automates the entire calculation instantly.
• Confidence at Every Border: Walk up to any immigration desk knowing your exact legal days remaining — no anxiety, no guessing.
• One App for Every Passport: Dual citizens and people acquiring second residencies no longer need to track multiple passports separately; everything lives in one place.
• Plan Future Trips Smarter: See exactly when you'll next be eligible for re-entry before you book flights, not after.
• Peace of Mind for Nomads: Whether you're 6 months into a Schengen rotation or planning a UK base, BorderSense makes compliance effortless rather than exhausting.