i want someone to make me a simple android app for my jewellery store. i should be able to post new products and photos of new stocks using my phone, without going on my laptop. everything should be managed using my app. nothing should open in browsers, no silly tricks and ideas. whenever i put a new product users should get a notification. users should be able to reserve or buy the product from my app. users should also be able to get in contact with me regarding products. It should not look like a website. it should be a real android app with all the essential eCommerce features.