You might want to let your users know that you are using UXsniff on your site. To do so, you can insert a clause in your privacy policy explaining this:
We use UXsniff in order to better understand our users’ needs and to optimize this service and experience. UXsniff is a technology service that helps us better understand our users' experience (e.g. how much time they spend on which pages, which links they choose to click, what users do and don’t like, etc.) and this enables us to build and maintain our service with user feedback. UXsniff uses cookies and other technologies to collect data on our users’ behavior and their devices (in particular device's IP address (captured and stored only in anonymized form), device screen size, device type (unique device identifiers), browser information, geographic location (country only), preferred language used to display our website). UXsniff stores this information in a pseudonymized user profile. Neither UXsniff nor we will ever use this information to identify individual users or to match it with further data on an individual user. For further details, please see UXsniff’s privacy policy by clicking on this link and data processing agreement by clicking on this link.