Sorry, probably not.

This is meant to run hosted (like a website), so it needs a server setup.

If it all sounds like gibberish then you don't understand what a lamp stack or a docker container is it's unlikely you'll be able to install it on your own in a way that is useful or that you can maintain for security.

You could possibly hire someone to install it on your behalf - but given that it's dealing with your finances I would be hesitant to do so.

If you are on Android try the Cashew app - has a paid tier but it's unlikely you'll need it and is minimally intrusive.