Personally, I'd leave the about page as is; but I'd definitively change the main page to impersonal discourse.

"tagBeep has some unique and very useful features but there is a lot of room for improvements and I’m working on them." Would become (something like, I'm not a native speaker): "tagBeep has some unique and very useful features but there is a lot of room for improvements which are being actively developed"

" The app has some unique monitoring features, but it's far from where I want it to be." Would become something similar to: "The app has some unique monitoring features, but it's far from finished"