I think you can not really explain how this thing works regarding the logical expression sections to the lower half of it. Basically you need to delay the signal, have a sidechain or shift each section by a value other than 0, thereafter everything is just pure fun of experimentation.
Each section has a different sound of bit distortion, and you can click on any bit value to alter the sound.
You can get really crazy effects out of this one, but it will keep somehow mysterious about how you got to that particular sound. I reduce one star because of the strange use, but it can be a very interesting tool if you are looking for exotic distorted sounds.
Every sample of audio has a magnitude. Magnitude can be represented as a binary word. A binary word consists of bits.
MBitFun allows you to perform bitwise operations. This changes the binary word, consequently so too the sample's magnitude. This happens to each input sample, therefore you need not introduce delay. Delay is there if you want to perform bitwise operation of current input and delayed input. The logic operators evaluate 1s in its row against input audio, if Delay=zero. Operators evaluate current and delayed input, if Delay>zero. Sidechain input is another source for bitwise operation.
A fun thing to do is to automate the cells of the operator(s). You can make distortion patterns.