The simple fact is you need the paid plan. All the decent SEO hints are blurred out, and without them don't go thinking the Free plan will make or contribute any meaningful difference to your Google ranking. As I have seen. It won't.
Thanks for your review. I understand your point and that's why the next update will include more free features into the app. I have also sent you an email to explain my point in details and I would really appreciate it if you can get back to me about it. Thanks!