Paypal app that isn't paypal?

I’ve been selling stuff online pretty often. Been using paypal, its ok. But I’d like to be able to just open an app, have all my invoices listed first thing, have cash amount in account be listed at the top, and ignore all the other stuff, or at least make all the senseless information I don’t need from paypal just go away.

Are there 3rd party paypal apps? Not secure, probably, but curious.

Would never use one, if you want an alternative to paypal maybe then there is a solution that might work for you.

Cant freshbooks do the things you require?