Dart and flutter are enough to build full app?

Answer 1

Yes!
But according to the requirements of your app, you should choose the language.
Make a plan, list requirements, search if dart can fulfill them or not and start!

Answer 2

You can work with json for offline data saving. To store them in cloud data base, mostly SQLite is used in flutter.
You can find it in flutter.dev webpage. It's documentation is easy to understand or you'll find many other websites.😊

Answer 3

Manish
Thanks.
I'm web developer i have no idea about mobile dev. Plz i have another questions: which database use with mobile app?
Can i use JSON or something like that with dart flutter?

Answer 4

Manish
Thank you again ok.
Is there an other language - framework work with MySQL ?

Answer 5

You can easily create db in sqlite, to fill data and access them, you need some code, as well as sqlite package for flutter.