BorderDays: Residency Days

AG-Ventures

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About this app

BorderDays counts your travel days against three residency rules at once — Schengen 90/180, the UK Statutory Residence Test, and the US substantial presence test — so you can see all three limits from a single trip log instead of maintaining separate spreadsheets.

HOW IT WORKS
Log each trip with a country, entry date and exit date. BorderDays applies the published counting rule for each zone your trip touches:

• Schengen 90/180 — a rolling 180-day window, both entry and exit day count, matching the official European Commission counting method.
• UK Statutory Residence Test — day counts against the sufficient-ties thresholds, split by arriver/leaver status and number of UK ties.
• US substantial presence — current-year days plus a weighted count of the two prior years, checked against the 183-day formula.

WHAT YOU GET
• One trip log, three rule engines — no more juggling separate counters.
• A forecast: log a planned future trip and see immediately whether it would push you over a threshold, before you book it.
• CSV export of your full trip history and day counts — the evidence file an accountant or immigration adviser can work from.
• Works offline — your trips are stored on-device; nothing is required to keep a running count while travelling.

WHO IT'S FOR
Frequent travellers, remote workers, digital nomads, and anyone splitting time between the UK, the Schengen Area and the US who needs to know, day by day, how close they are to a residency threshold.

BorderDays counts days and applies published statutory thresholds. It is not tax, legal or immigration advice — always confirm your position with a qualified professional before making decisions based on residency status.

What’s new

First release: one trip log checked against Schengen 90/180, the UK Statutory Residence Test and the US substantial presence test — with forecasts for planned trips, CSV import/export, and fully offline on-device storage.