React Native theme for an app?

I want to create an App that is a field notebook, or farm field notebook.
An application to manage and organize the work of an agricultural or livestock farm
An application where the user can write notes, add images, add photos that you take with your device.

We should be able to download this to our computer to keep track of our farm.

Is there a template or a complete application on Codecanyon with which to start creating my project?
Examples of applications that are already in the Stores

Kaampo, Agricolum

Field Notes


Thank you