Fleksy keyboard — Private or not?

As the title suggested, as an iOS user, not having access to ASK/Floris sucks so bad. I think using the stock one is okay, but is Fleksy a better option? Thanks!

after swiftly checking their privacy policy, the fact that it’s quite short is already a good sign but not an absolute indicator

I’d do a bit more digging, see if what they do is fully Open-Source and whether it has been audited before.