This app requires at least two parties.
One game master and at least one player.
The game master creates a hunt and adds tasks (items that should be photographed) to the hunt. When he is ready he can give the access code to all players and they will be shown the tasks available when the game master starts the game.
When the players photograph things the game master will see them in his/hers feed where they can be approved or denied. If they are approved the worth of the task is added to the scoreboard and it cant be redeemed again. If the task is denied the task turn red in the players phone and they have to take another picture.
When the time is up no more photos can be added but the game master can still approve already sent in pictures.