Email vadapalas.zigmas@gmail.com. One person reads it, usually within a day or two.
No. Foxtro shows the public METAR and TAF reports published by the Aviation Weather Center (aviationweather.gov) and decodes them for reading. It is a planning aid. Get an official briefing before flight, the way your training and your regulator require.
Pull down on the Weather tab to refresh. Small fields report irregularly or not at all, and some report only in daylight. If a station never reports, search a nearby field that does. Reports arrive from aviationweather.gov every minute at most; there is no faster source of the same data.
Search by the ICAO code (KJFK, EGLL, EYVI) first; the list is every station that files METARs, about 7,700 of them, and a field without a weather station is not in it. Names match on any word, so "Heathrow" finds EGLL.
Foxtro uses the standard relations: wind correction from the sine rule, true airspeed from the density ratio at the pressure altitude and temperature, density altitude at 118.8 ft per degree from ISA. A mechanical E6B or a different app can differ by a knot or a degree; that is rounding, not error. If you find a real disagreement, email the inputs and both results.
The arms, limits and fuel capacity come from the aircraft's own weight and balance sheet, which you type in once. Where the POH envelope narrows at the front as the weight goes up, enter the weight it starts moving at and the forward limit at maximum weight, and Foxtro draws and checks the sloped edge. The sample Cessna 172S is a sample: use your aircraft's numbers.
The wind is the one in the latest METAR, which reports it in degrees true. Each runway's true heading comes from OurAirports' public runway data, bundled in the app so it works with no signal; where a heading is missing it is worked out from the runway number and the magnetic variation, and the app says so. The tower and the ATIS give the wind in magnetic, so the app shows that figure too. Gusts and a variable wind are counted in the worst case.
Set them in Settings or from any airport. Each report is checked for the ceiling, the visibility, the wind with its gusts, the worst crosswind on the favoured runway, and thunderstorms at the field. The check reads the report Foxtro has; it does not replace a briefing or your judgement.
Open Settings with the gear at the top right and tap Restore Purchases. It also appears at the bottom of the purchase screen. If that does not do it, email me from the Apple Account you bought with.
Delete the app. Favourites, cached reports, aircraft profiles and settings live only on the device, and there is no copy anywhere else.