Without the nasty after effects of staying up for hours and hours.......Litchi is similar to DJI Go, but as said above, you can also program waypoint missions on your device or computer and upload them to your Phantom/Mavic for autonomous flights.
You can do similar missions in Go, but you will have to input the actual waypoint with your Phantom/Mavic instead of on your device or computer. If you are getting bored just flying, Litchi waypoint missions reinvigorate enthusiasm in flying your drone...kinda like drone Viagra.