Newbie - New project

Hi, I am a newbie and I am planning to make the IoT pet feeder. I have some questions to clarify:

  1. I have seen in your post that you are using a mobile App for this project. Will it be provided?
  2. Do I need to buy all components from you or I am allowed to purchase it from other sources.
  3. I am residing in Netherlands, will you be able to deliver components to me? what is the delivery charges?