Untild counts the days you spend in each country and tells you how many you have left. It checks the Schengen 90/180 rule, 183-day tax residency tests, visa limits and US state residency, using 172 presets with official sources. You can add trips by hand, import them from photo locations, or let automatic tracking log new days. Alerts warn you before you reach a limit or a passport expires. Everything stays on your iPhone: no account, no servers, no analytics.
