It’s very simple to use. Just provide a username and a photo (of yourself preferably!), then join any WiFi network and let the app discover other users on the same network. You can either be “Online” or “Offline”. You can invite other “Online” users to chat or send them Spy Messages in case they don’t feel like chatting right now, or you can send Spy Messages to “Offline” users. A Spy Message can contain both text and photo. Spy Messages will remain archived until you actually decide to delete them. Remember though, you are allowed to send a limited number of Spy Messages per user! So think carefully what you want to say or show! You can sign in with AppleID, Google or Facebook. Have fun!!