Timesheet app for working abroad: time zones and day counts

Muster records a day abroad in the country it was worked, counts the nights at the overseas rate, and keeps the Schengen and US day counts from the record.

Three things go wrong on a timesheet abroad

The day moves. A phone left on UK time in Mexico splits the day at London's midnight, which is early evening there: a Saturday's later hours go on Sunday and are paid as Sunday.
The country is missing. A night away claims the UK or the overseas rate by the country it was spent in; a day with no country cannot claim one.
The days are not counted. Ninety days in any rolling 180 in Schengen, or per admission in the United States, is a limit nobody keeps in their head from a timesheet.

How Muster does it

The phone's clock, checked. With GPS on, Muster compares where the phone is with the time zone it is set to, and when they are three hours or more apart the clock-in and clock-out forms open with a red box: set the phone's time zone to automatic. It never stops you clocking in. See A phone on the wrong time zone.
The country on the day. A travel clock-out that lands abroad closes the stay you left and opens one where you arrived, so the day carries the country and the night follows it. See Nights away and overnight allowance.
The day counts. The Travel tab counts days by country from the stays, arrival and departure days each counting as a whole day, and shows the Schengen 90-in-180 window and the US admission clock. A trip to Canada or Mexico does not end a US admission, and Muster counts it that way. See How the counting works.
With no signal, and in any language. Hours are kept on the phone and sent in order when it is next in signal, and the app runs in the language the phone is set to.

Those counts are Muster's arithmetic on the record you gave it: a tool for staying clear of a limit, not an immigration ruling.

Try it in the demo: its invented engineer flies out, and Travel shows the stays and the counts.

A worked example

A fortnight on a site in Germany, flying out on a Monday and home on the Friday of the second week.

Recorded	What Muster shows
Monday: Travel from home to the site, landing in Germany	The stay at home closes, a stay in Germany opens, Monday is in both the UK and Germany
Ten working days, each ticked Overnight stay	Ten nights at the overseas rate in Summary
The second Friday: Travel home	The German stay closes; 12 days in Schengen against the 90

Questions people ask

What if my phone is on the wrong time zone and I did not notice?

The clock-out form says when a shift has passed that midnight and which day its later hours are going on, and the Log shows each entry on the day it landed. Check the day in the Log and correct it; the correction is kept with what it said before.

Does it track where I am abroad?

No. Location is off until you switch it on, and with it on a position is taken at a moment, to name a stay, never a trail. See A timesheet app without GPS tracking.

Does it do the days for a visa application?

It counts the days from your record and says how many. Whether that satisfies a border is a question for the border.

Try the demo - invented data, no account. Request a demo to use it for real. The manual has every screen.