The other day, I asked Meta AI how to deactivate it from WhatsApp. It recommended me to use a third party WhatsApp client. I always thought this was not allowed, but if meta itself recommends me this I guess it’s OK.

This sounds great. I would definitely love a splitwise alternative in particular!

You may want to think about using another name for your app suite though. Since it may bring confusion with the simple mobile tools (https://simplemobiletools.com/index.html) which for example also have a “Simple Notes” app.