Postacube

Postacube is an interesting app you can use to send messages for anyone in the world to read. You can write whatever you want without including your name or any other personal information. It's like sending a message in a bottle that other users are bound to find.

To send your cube, simply pick a color and write your message inside it. You can also insert a picture and decide how long your message will be visible (this can range from one day to your entire life). There's no limit on how many you can send and they simply pile up on each other, meaning you won't have to do a lot of scrolling.

If you want to read a message, just open the app. The trick is in scrolling around the screen and finding the cubes. Once you see them, just click on one to see what's inside.

Although you can't respond to messages, you can answer back by sending a replica cube. Just post it in the same place where you found the other cube. You can pick how long the message will remain visible, depending on whether you want more or fewer people to read it.