Default How to disable the 'seen' feature on Facebook for android?

Hey, I just switched from Apple to android for one reason. Customization. On my iPhone, I had Cydia where I could download tweaks and stuff that would give me a feature that would make me 'unsee' the message that I saw on Facebook, thus not marking it as 'seen' on Facebook.

Is there a similar feature on Facebook for android for this? Like a code or something that will hide it when I 'see' the message?

Please help. Thanks