4U at Mac App Store analyse

4U lets you send and receive messages that will only open when the given time and date is reached. Messages will then expire after 60 minutes and will become permanently sealed. Customize the seal of your message to make it stand out. 4U features: - Over 100 textures to customize your message seal. - Send drawings, photos, videos, text or audio. - Public messages can been seen and opened by anyone with 4U. - Private messages are only received by users you select. - Easy and fast account creation just choose a username and that name will be connected with your iCloud account.