Borderline – UK ILR Tracker

For BN(O) holders pursuing ILR. Track your 180-day rolling window automatically. Simulate trips. Generate Home Office-ready absence reports.

Don't let one miscounted trip cost you your UK ILR, US green card, or Canadian PR.

Borderline is the immigration compliance tool for people who actually travel — BN(O) holders flying home to Hong Kong, green card holders visiting family abroad, Canadian PRs crossing back and forth for work.

Other apps count days. Borderline gets the rules right.

WHY BORDERLINE IS DIFFERENT • UK midnight rule — a day counts as "abroad" only if you're outside the UK at midnight. Most apps count calendar days and over-report. • Crown Dependencies split — Jersey, Guernsey, and the Isle of Man count as UK for citizenship, NOT for ILR. Most apps treat them identically. • Rolling-window traps — a trip from two years ago can still push your rolling 12-month window past 180 days today. Sum-based calculators miss this. • Single-trip triggers — the US 180-day rebuttable presumption and 1-year automatic residence break are separate from total physical presence.

WHO BORDERLINE IS FOR • BN(O) visa holders pursuing UK ILR — including the Feb 2026 adult dependent family route • Green card holders working toward US naturalization (5-year or 3-year spouse path) • Canadian PRs maintaining status or applying for citizenship

PATHWAYS SUPPORTED • UK ILR — 180 days max in any rolling 12-month period • UK Citizenship — 450 days over 5 years, 90 in the final 12 • US Naturalization — 913 days present in 5 years, no trip ≥ 1 year • Canadian Citizenship — 1,095 days present in 5 years • Canadian PR Card — 730 days in every rolling 5-year window

AUTOMATIC BORDER DETECTION GPS detects crossings in the background, even when the app is closed. No manual logging.

TRIP SIMULATOR Before you book, see how a future trip would affect your thresholds — rolling window, single-trip limits, eligibility date. Finds your maximum safe trip length.

APPLICATION-IN-PROGRESS WARNING After you submit your ILR, N-400, or PR application, toggle it on. Borderline warns you not to leave the country until your application is decided.

IMMIGRATION-READY PDF REPORTS Formal absence reports formatted for the Home Office, USCIS, and IRCC. Attach directly to your application.

MANUAL ENTRY, MAP, EXPORT Backfill past trips (multi-country supported). View every crossing on a map. Export as CSV or JSON.

PRIVATE BY DESIGN All data stored on-device and synced via your private iCloud. No analytics, no tracking, no account.

LOCALIZED FOR BN(O) HOLDERS English, Simplified Chinese (简体中文), and Traditional Chinese (繁體中文) — including BN(O) visa terminology.

IMPORTANT: Borderline is an informational compliance tool, not legal advice. Always verify against official records and consult a qualified immigration adviser before applying.

Borderline requires an active subscription. 3-day free trial, then $29.99/year. Payment is charged to your Apple ID at confirmation. Auto-renews unless cancelled at least 24 hours before the end of the current period. Manage in your Apple ID settings.

Privacy Policy: https://docs.google.com/document/d/1Mto2uyOBZfvjYO2hpg5iC6WA4RDGmVNXa72kJztDjlc Terms of Use: https://peteryeung0530.github.io/borderline/terms.html