ถาม: How does rangefinder and ballistic app connect? ก: 1. Search ”henrich boss” on Google Play or Apple Store, you will find “BOSS” app, free download it to your smartphone, set up your PLUS rangefinder, create, manage, and store your specified ballistic profiles using “BOSS” app-based on the ballistic solution supported by Applied Ballistics. 2.Connect PLUS rangefinder to BOSS app by Bluetooth connectivity. 3.Transfer your setting and your ballistic profiles to your PLUS rangefinder. 4.Having the integrated Applied Ballistics software, you get highly accurate results for your PLUS rangefinder based on the measured ranged, the equivalent horizontal range, and ambient data such as temperature, air pressure, and angle.