Suggestion: Change "Get Started" to link to the app in a demo-only mode (where one can create an account later or not at all), or add a second link like "Try it (live demo)" next to "Get Started." Eliminate all barriers to trying the app.

To maximize conversion from viewers to at least passive users who "kick the tires," put the demo app right on the home page (instead of or in addition to screenshots).

For functionality that doesn't require an account, like surveys that could be transient or persisted, don't require an account at all. Let people decide to save the results when they're done.

(Google "product-led growth" for more on this. The gist is to make it useful enough that I want to keep using it, rather than rely on some screenshots and text to make me care enough to sign up. Eliminate as many barriers to getting value from the app as you can.)