I'll look into implementing a email + password. But this might take a little longer, as you need to have features for people who forget their password, so forth. I agree it ultimately needs to be there if this is going to be a versatile tool
You could definitely just set up, say, a squash network and call it "Office Ping Pong". But note that recording scores only allows inputs between 0 and 6. Might be nice to enable up to 21.
No problem - I'll put table tennis into the next version, so look out for an update on your iPhone in a couple of weeks.