Spyglass v3.9.1 Premium

Compass & gyrocompass:
* Accuracy improvement techniques, special compass modes and calibration methods available in Spyglass only make it a real instrument - the most advanced and accurate digital compass.
Finder, tracker & AR navigation:
* Spyglass operates in 3D and uses augmented reality to show object positions, info and directions to them overlaid over camera or maps.
* Save current position, add a point from maps, manually enter location coordinates.
* Find the saved place later simply by following directional arrows.
* Spyglass tracks your target and shows its info - distance, direction, azimuth, elevation and estimated time of arrival.
GPS, speedometer & altimeter:
* Find and track your location and get detailed GPS data - coordinates in dozens of formats, altitude, course, current, maximum and vertical speed, using imperial, metric, nautical and surveying units.
Offline maps:
* See your and targets' positions on maps using different map styles and alternative map providers - plan waypoints and measure distances. Offline maps optimized for retina displays are available for download.
Track polaris, sun and moon & navigate by stars:
* Track positions of Polaris, Sun and Moon with arc second precision - use them as a reference to calibrate compass for maximum accuracy.
Optical rangefinder:
* Measure distances to objects in real time with a rangefinder reticle similar to sniper sights.
Sextant, angular calculator and inclinometer:
* Find out heights of objects and distances to them - measure visually and calculate dimensions and distances.
Camera:
* Take pictures overlaid with all available GPS, positional and directional data.
Requirements: Android 5.0+
Home Page -

https://play.google.com/store/apps/details?id=com.happymagenta.spyglass&hl=en