I find I often mess up the order of events. I often don't remember all the key points or all the topics. Maybe one important topic and several key points. Maybe I'll half remember a significant phrase.

I used to remember a lot less due to anxiety affecting memory and a pretty bad memory in general due to not being fully present.

I don't remember much so I record. Having it allows me to be more present and therefore remember better.

I jot some key stuff on a notebook I bring into session, and sometimes my therapist will prompt me to write things down.

I usually type out whatever I can recall on my mobile after the session onto a private facebook account which I then copy over to my private, password protected blog (don't have an app for the blog).

Later I add details to the entry by listening to the recording.