Sextant (com.Sextant) on Google Play
For training or improving your skills with a marine sextant, an aircraft octant (bubble), an artificial horizon, or a theodolite. - Real time calculation of the instrumental altitude Hs for comparison of your shots. - Useful for index error determination. - For Sun, Moon, and navigational stars and planets. - Location on map of your position by GPS or manually. - Map: zoom, satellite and rad map.