Well-crafted App
I’ve had this app, in its various updates, for several years now, and it still is leaving me shaking my head. It’s true that - as some reviewers have said - if you’re in the wilderness and your phone runs out of battery, you would do well to have an old-fashioned iron compass. But this is something far more sophisticated. AR combines bearings, distance measurement (mil scale), fine calibration by position of sun, moon, Polaris…or any of the 100 or so major stars that you can choose. Can be set for magnetic north, true north, “gyro” compass (based on your initialization, just as in aircraft gyro compass), integrates with GPS, stores maps you use once while connected to data.
If this were a stand-alone device, it would come closest to some of the high-end TI scientific calculators, in terms of usability, versatility.
This dev has done some other interesting apps, too, but while they are extremely detailed, this is the most accessible of his projects. But be sure to print out the manual, and (as he suggests) read it a bit at a time, not trying to internalize it at one sitting.
bluequasar about
Spyglass, v3.7.7