With GPS Treasure it is easy to create a treasure hunt. 
GPS Treasure is even suitable for children. 
Just take a walk to the places you want to be a part of the adventure. Take a photo within the app of the place and enter an optional solution for this checkpoint. You can hide a small note, a special object or a riddle at this position. But this is optional, if you have young children.
After this the hunter can start. They will be guided by a pointer to the checkpoints. If the hunter come close to the next checkpoint your photo of the search area becomes visible. With the solution word the hunter unlocks the next checkpoint. If no solution is saved you can skip this.
Don't worry! All information you can find in the HELP section within the GPS Treasure app. Have fun!