Yes, it's safe. Some turkers hate inquisite because it takes over the computer screen while you are doing the survey (so you can't multi-task). But it's a well known program that academic requesters use all the time. I don't mind using it at all - if the survey is 'worth it.' You can uninstall it when you're done - but I don't bother (since I'll certainly encounter another survey that will use it in the near future)
Ok, thank you , I went ahead and installed it and did the survey and then it did give me the option to uninstall right away at the end of the survey so I uninstalled it, but I will for sure put it back on there if I need it for another survey knowing now that it was ok.
Thanks for your help!