Polar Clock is a lightweight easy-to-use app designed to help with
the setup and polar alignment of an equatorial mount. It displays
Polaris' hour angle local sidereal and UTC time and GPS
coordinates. It provides additional help to Orion/SkyWatcher mount
users by placing the Polaris in a virtual polar scope.
Polar Clock / What's New in vUnknown
Polar Clock now displays accurate elevation information! The
elevation is derived from the GPS position plus the Earth Gravity
Model 2008 5' x 5' interpolated grid data which is bundled in the
app. No need for large databases or active internet connection, you
can always have accurate elevation info.