The best way to find out is to try it. The mobile app can scale to any store size, and it's designed to be customized in any way you want. Extra features can be added on demand.
For individuals
If you never had an online store before, this is for you to explore how it can look like on mobile.
Advanced stores
You already have an online store, and you want to go mobile.
Pro level
You have a large store with many products and you want a custom version of the app with a lot of extra features and customizations.