NOTE: Before you get the wall mount one, confirm if your house is not made of hollow blocks.

Pull up bars can instantly be mounted to your door or wall. It requires your body own resistance to deliver powerful results fast.
The Pull up bars comes in;

1.Wall Mounted Pull Up Bar

Wall mounted- this wall-mounted pull-up bar from iron body fitness is made of heavy-duty steel and can be mounted directly to a wall or permanent fixture. it’s a great way to work on your physical strength by targeting your back, arms, shoulder, lats, and abdominal muscles.