You’re out in the field with an M110 rifle, trying to line up the perfect shot. But with wind, temperature, humidity, altitude and atmospheric pressure, who knows where that bullet is really going to go? Fortunately, the Bulletflight iPhone app mounts onto the rifle and tells you where the shot will land relative to line of sight. Just enter the parameters and calculate the ballistics. Knight’s Armaments commissioned the app, so it’s designed to work with the gun maker’s own models, but there’s already another application called iSnipe that doesn’t discriminate. Bulletflight costs $11.99 and iSnipe costs $4.99. Who knew this was such a competitive market? [Bulletflight via WooHome]