Drafts is probably my favourite app ever. It allows me to get ideas, things to do, quotes, etc. out of my head and records them easily for me immediately. I can do this either by typing into my iPhone or, as I am now, dictating onto my watch.
Once I’ve captured the text, Drafts then lets me do all sorts of useful things with it from sending an email, to sending to my blog, or collating into a longer form document.
If you want to find out more this fantastic video by Christopher Lawley is a great place to start.