What would you like in a simple SEO app?

Hello guys
I'm creating an SEO app like Yoast but I want it to be beginners friendly and focuses on the most important features rather than the hundreds other apps provide without actual results.
Which features would you like in a simple SEO app that will help you optimize your website the most?
Is there anything you would like to be added to make the app easy to work with?
I'm open to all suggestions as I'm still developing it =)
have a great day!