@Vitor Pamplona Are you familiar with how Firefox does translations or an app called LibreTranslate? Wondering if you would be able to hit one of their endpoints for translations on the F-Droid version. 

 Yep, it's an online service. Not really private. :(  

 I thought the issue was getting it through the F-Droid review process. I would not mind having a flag in app with a big warning about privacy. My device always routes through a VPN.