This was posted here yesterday by the dev. Overall the reaction seems positive.

A quick look through the repo it looks pretty legit, it’s a lot of effort to create something that works, with all the documentation (including a lot of planning docs) just to collect data on you. Traffic to various IPs, foreign or otherwise, wouldn’t really be odd for an app like this either. You could try and run it through something like virustotal though to look for malicious code (there are more than a few docker scanning tools on GitHub that use virustotal).