I considered this years ago, and just now discovered two clubs immediately next to my house. My concern is that I'm coming at this from a place of fairly severe social anxiety; I do fine in business settings, but anything else causes me a great deal of anxiety. In your experience (or anyone else who wants to chime in), are people fairly understanding in this regard? What is the typical age range?
I was a member for 6 months. People are extremely understanding - there are a number of people who get very visibly nervous on stage who get very helpful feedback from everyone in the club. Age rage was 20-60 for my club, the only thing I disliked about ToastMasters was that occasionally a speaker would talk about things a bit too personal or act like its a self help group (might be different in the clubs in the CBD.)
I was going to say this. I don't think you need an app to track this-- getting better and more confident in speaking isn't as easy as doing 5000 steps in a day. Toastmasters will teach you good skills for speaking, and will boost your confidence by giving you constructive feedback.