I came across CalyxVPN while browsing through F-droid, it seems to be offered by the same people who make CalyxOS. I couldn't find much discourse about it online, is it reputable enough to use?
My use case would be to hide whatever I do online from my ISP (I'm not torrenting, just browsing).
And yes, I know free VPNs are untrustworthy in most cases but this seems to come from a somewhat privacy respecting background so I was curious.
Yes, I would say so. It's similar to RiseupVPN, which is also free as a matter of principle rather than as a business model. A common misconception is that free apps and services are inherently less private than paid apps and services, but really it depends on the business model (if there is one) and whether you trust the provider to honour any claims they make. CalyxVPN and RiseupVPN are not any less trustworthy than commercial, paid VPNs simply because they are free.
Honestly, yes. I don't personaly used Calyx VPN or Riseup because, in my experience, the download and upload speeds are terrible. Calyx is a reputable group, however.