Usability
Interface 
User-friendliness/complexity of the tool´s interface
Simple, user-friendly.
Time efficiency Time needed for mastering the „how-to“ of the tool and a production of a task
Medium.
Interface language(s) The number of languages in which the tool is currently available/adaptable to
Swedish.
Respect for privacy Does the tool require registration? Who can see my data? Can I remain anonymous?
High. HejSvenska collects personal data for providing and improving the service, not for business purposes. This data is not shared or sold to third parties. However, it uses third-party services that might have different privacy policies and use cookies. Its privacy policy mentions security measures. HejSvenska’s privacy policy does not mention compliance with the GDPR. See more here.
Saving work for future use Possiblity to save your or others´ work for reuse/reproduction
No.
Tailorability (If so, how?) Possibility of the tool to be used for a range of different activities (e.g. to what extent you can organize a project assignment with a central activity based on this tool)
Not much; users can choose among already-made lessons in three levels.