Interesting rules of an emerging user engagement tracker for an open web

We are going to refer to the licensing and usage rules of a popular user engagement tracker timeonsite.js here…

• It faces a lot of unauthorized use even though a proper commercial version is available for a small yearly license fee. Actually, the non-production use is free forever. Also available on CDN for fast access.
• It’s interesting to note that this tracker for measuring critical “time spent” or engagement metrics has been priced at $38; more than last 5 years without a change in cost structure.
• Though it has free non-production uses for any website or mobile websites, there is a great deal of pirated copies around the web without a valid license. Its motto is: One code to rule all the desktop & mobile browsers.
• The tracker is most noticeable for access to unlimited number of users and sub-domains for a given website at a meagre license cost.It uses state-of-the-art Javascript’s sendBeacon API to send the captured user engagement data without hitting the server intermittently. Probably there isn’t any other analytics provider that advocates the use of sendBeacon at this level or predominant in preventing messy server hits for capturing user engagement.
• It was first released in 2018 and has not ever crossed beyond “5 open issues
  ” at any given time in Github issues tracker due to its nature of time capture criticality, browser multi-tab time sync efficiency, decisive bounce-rate time captures and so on. You may take a look at this issues page: Project Issues Listing on Github This is a commercial user engagement web tracker but open to free use for non-commercial and non-production domains.