Using “we,” “our,” and “us” is standard legal practice. It simply refers to the business or entity providing the app/service.
It does not automatically bind your partners or affiliates into legal obligations. It only applies to your company/project (Grocery Coupons & Deals).
If you ever form a company (LLC, Corp) later, “we/us” will cover that entity. For now, as a sole founder, it covers you operating under this app’s name.