Mobile messaging apps are mostly designed for asynchronous communication – you can send a message, and it might be hours or days before anybody reads it.
Curtains ensure that if you're messaging with somebody that you're both
Both present in the moment.
Aaah the glourious curtain itself! It is drawn open when both of you are in your chat together. It is shut if one of you is missing.
You can have a Curtains chat with any of your Facebook friends also using the app. They don't have it? You can invite them to use it.
But what if you're at the curtain and your chat buddy isn't? You can buzz them! They get a notification saying you're waiting for them.
As far as chatting itself goes, it is almost what you're used to. Chat bubbles everywhere. Except...
There is no "send" button!
For the messaging to be truly synchronous, you shouldn't be composing a message and maybe sending it later. Every letter you type is out there and visible by both of you as you type it. Know that warm and fuzzy feeling you get when you see people "typing" on Facebook Messenger? Well, this is even better!
If the curtain is open, you know you're both there.
The curtain is trivial. If it is open, you know your chat partner is there with you. Not playing that game they always do. Not switching about between apps. Not chatting with other people. They are there with you!
No exchanging of user names or phone numbers.
Curtains Messenger is integrated with Facebook. All the people you have as friends on Facebook who also use Curtains are there available for you.
It is not perfect, but it gives you a taste of how different synchronous messaging is. Go ahead and get it :)