For a long time, I've kept records on the strengths, weaknesses, playing styles, etc. of each good opponent I play. I suspect a lot of tennis players do. I also occasionally keep notes on what happened in particular matches; what happened, and why.
Recently, I made an Android app to hold these types of notes for me. I made the app for myself, originally, but I've modified it so other people can use it as well. It's free, no ads. Anyway, I'd like to hear what some other tennis players think about it; so far I've only shown it to a few friends.It's on Google Play
, if you want to check it out. If you like it, do me a favor and review it. If not, tell me why and I'll improve it.
I thought this piece of equipment might be particularly useful to some of the people on this board, since many people on here are interested in keeping tennis journals.