hi,
my first recommendation is start learning ionic 2 and type script
you will get much more...
with the app you buy you have Wordpress Integration
the question is much more complicated
wich kind of back end to use
node, ror, php ...
mysql/mariaDB, mongodb ...
- https://github.com/giorgiofellipe/chat-app-sails-ionic
- https://github.com/firebase/firebase-angular-starter-pack
- https://github.com/fitcom/ionic-strongloop-starter
- https://github.com/shprink/wordpress-hybrid-client
- https://github.com/cachrisman/ionic-ecommerce
- https://github.com/lukesUbuntu/wam-serverside
and you have a lot more !!!
what is you're background?