There open source project for backend api?

[samsonlarsson]

This is based on prestashop, you might wanna check it out and cnfigure one for yourself

[ZelvaJan]

Partially solved by connecting to apiary mock server https://bfashionapibfversion.docs.apiary.io/# Generally speaking this is just mobile aplication, you have to write your own server which will handle all the logic ad data for specific store.