Dead easy app that accurately calculates the last tube time - taking into account changing between lines, lines shutting down at different times, engineering works, and the day of the week.
There's more variation than most people expect! Earliest is often before 11:30, and sometimes it's as late as 1am. Last Tube buys you extra drinking time by working out exactly how long you can party on without ending up on the night bus.
Last Tube handles complex cases like needing to change between several lines to get home - so no getting stranded in Whitechapel.
This is not an official TFL app.