A friend of mine tried to use Litchi at a field about 1.5 miles from the airport (Class C controlled airspace). He is a part 107 pilot and used Airmap to get authorization to fly. When he tried to take off using Litchi, it would not let him. When he took off with Go4, it asked him to confirm he had authorization to fly in a NFZ. After he confirmed it, he could take off. After using Go4 to initially fly, Litchi also started working. It's like Litchi follows the geo-fencing rules, but doesn't have any user interface for them.