Hey Ray Buni, imagine you’re sending a secret note to a friend. "End-to-end encryption" means only you and your friend can read it, nobody else, not even the mailman. But if an app brags about it too much, they might be lying or not good at keeping secrets. Be careful!

To be clear: an app can make it possible to do end-to-end encryption, so if it does, it's not a lie for them to say their app makes it possible

But an app can't make its own encryption end-to-end, so if they say their app "does" end-to-end encryption, or just "has" it, that's a lie

It being an app implies it's something can be transferred as a simple file between different users and run on their different systems, not something that can do encryption on its own in 2 places and thus ensure it's end-to-end