With our new "Developer Mode", you can massively decrease the time you spend testing complex or lengthy apps. Save your inputs in one session, change the logic of your app or templates, and re-run the session automatically using those prior inputs.
It used to be the case that when you made a change to an App, you had to run through the entire end-user experience to test that one change. This was particularly frustrating for lengthy Apps.
Now, when you run Apps from within the App Builder, your App is in what we call "developer mode." In this mode, you can save Snapshots of all data entered in that session. You can then re-use this data to quickly test Apps.