> For the complete documentation index, see [llms.txt](https://surveysparrow.gitbook.io/appnest-project/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://surveysparrow.gitbook.io/appnest-project/project-guide/step-3-plan-your-app.md).

# Step 3: Plan Your App

You are now at the most interesting part of the AppNest app-building process. Since planning and designing the app might require extra effort, we have curated a set of points to make it easy for you to dive right in.

* Struggling to find app ideas? Check out this [what-to-build document](/appnest-project/what-to-build.md) which holds various interesting and challenging app ideas.
* What to build is more important here than how to build because any app you build must solve a business requirement for SurveySparrow. You can read more about it in the What-to-build document.
* Before you start building, check out the feasibility of the idea, i.e., check if there is proper API documentation for the third-party integrations and if they allow you to perform OAuth (if needed)
* Familiarize yourself with the Twigs documentation to construct a solid interactive UI.
* If your app requires storing data on a database, then utilize SSDK CLI's data storage methods but first, create a proper schema design to perform validation on the data.