It should be an essential tool for all website owners - everyone should care about page loading time from the CEO down to the junior web developer. Page speed is a factor that hugely affects visitor satisfaction, and Google takes it seriously by offering PageSpeed Insights. If you work in a larger organisation and focus on one particular part of website development and maintenance, such as a content writer, then this tool won't be as useful. It's intended for users with development or marketing-related responsibility
SEOTesting.com is fantastic for my specific scenario. I'm on a small marketing team where I'm currently the only SEO-focused member, and I'm just starting to ramp up our SEO efforts. I need to quickly report SEO results to my leader and team members, in a way that is visual and yet makes it easy to drill down into the data. SEOTesting.com makes that easy & even fun.
SEOTesting.com is NOT all-in-one SEO tool. But what it does, it does really well.
Rank Tracking requires to fill landing page per keyword. That doesn't make sense as the desired landing page is not always the best ranking landing page for each keyword.
Dashboards timelines should have some options to select only the desired timeframe. Then it would be sometimes easier to look at only the last two months for example.
The account person is quick to respond, though issues reported required support of other teams with no SLA. The data is easily comprehensible and the platform is incredibly versatile. Sometimes scanning problems take weeks to diagnose and fix. The learning curve for SEOTesting.com is minimal
I've never used any software beyond PageSpeed Insights and Google Lighthouse (the source of the PAgeSpeed Insights software.) I've used similar programs like Hummingbird for WordPress that pulls the same data using the same engine, but its really the only game in town as far as I'm concerned.
I can't replace any other tool with SEOTesting.com, but SEOTesting.com has plenty of valuable features that any other tool doesn't have. I use id daily along with the other tools in my toolset.