No. Salespanel works with its own analytics engine. We provide you a tracking code and Salespanel fetches data through this tracking code that is installed on your website. It does not need to rely on Google Analytics for data. Salespanel tracking code works asynchronously and in real-time. It has no effect on your site's load speed.
If you want to know why Salespanel does not rely on analytics and what advantages it brings, please have a look at this blog post.