Hey, get outdoors with your friends and enjoy star gazing! Let StarTracker guide you to explore the universe. Just hold up & point the device to the sky and have fun! You will see any stars, constellations and deep sky objects you are watching in real time. << REMOVE metal case or magnetic cover to avoid interference and get accurate orientation! >> << Calibration steps: https://youtu.be/-Uq7AmSAjt8 >> Features: ★ All data is offline! ★ Fits all screen sizes from 3.5 inch to 12.9 inch for any resolution! ★ Sun, Moon, Planets in Solar System, 88 Constellations and 8000+ stars visible to the naked eyes. ★ 12 Zodiac Constellations Art & some famous deep sky objects with magnificent graphics. ★ Location auto set by GPS, or set manually. ★ Auto hide all menus and enter AR track mode when you point your device to the sky. ★ Smooth motion flow and quick response which is realized by cutting edge signal processing technique. ★ Superb high quality graphic display by enabling the retina display of the device and the full screen anti-aliasing technology employment. Pro version ($2.99 to unlock): ★ No ads & full main menu. ★ Full 88 Constellations & 100+ deep sky objects with magnificent graphics. ★ Search and guide you to stars, constellations, planets and deep sky objects. ★ 3D compass in AR mode, indicates position of objects you searched. ★ Time Machine menu and location menu to let you explore more on time and location dimension. ★ Night mode switch, protecting eye when doing star gazing outdoor.