[sirrele]

It really depends on the budget/time that you have. Are you more comfortable with Android or Full-Stack Web? If web, I would say of course build out a web solution and make it mobile friendly (MEAN: MySQL, Loopback, Ng2, Node). If you are comfortable with Android, use Loopback to build a web-app, and mainly focus on building out the APIs that you need, while knocking out the mobile side. It gives you an awesome interface for testing your APIs. Overtime, you can build out the client side of the web-app (I use Ng2) to handle the data management that you will need. Note, this is a lot of customization, so just make sure you have a clear direction before starting, especially with an e-commerce app that could get more complex then initially thought.

[dassiorleando]

Ok thanks for your points too, it really helps me to better handle my case.

I'm comfortable with Android and web dev, but not any php stuffs.