GoPro Karma - If a GoPro is your primary mode of filming, you should definitely be interested in the GoPro Karma.
Nightler - Find the people. Live the night.
DJI Spark - A mini selfie drone, controlled with gestures
Party with a Local - Party with a Local is a free app that connects travelers with locals that want to party.
DJI Air 2S - A $999 drone featuring a 1-inch 20MP sensor and 5.4k video
Discotech - Opentable for nightlife. Tickets, guest lists, and VIP.