Is seo rank checker safe from Seobook.com?

I’m getting tired of checking rankings by hand for dozens of sites…that take more time than the marketing itself almost…

Is seo rank checker safe from Seobook.com?

Anybody out there that’s been using it for years without any problems?

I have been using it for years before without any problem but starting last quarter last year it’s no longer giving me an accurate result that’s the reason why I started checking the SERP manually. Sometimes it’s gives 0 results on all the primary keywords.

Checking manually always gave you a right and an accurate report but if you want to see the rough sketch without inputting too much time on it , you can go for rank checker