Безопасен ли tawk.to?

Live Web Chat and Online Tracking Site For details, see: https://www.tawk.to (e.g. it is optional to enable scripts from this domain when someone is visiting another website)

Superb tool, safe, efficient. I used to have LiveZilla, which is great too but you must have php and mysql set for almost the same result but a very old client. Worst, is it expensive.