I was very interested in the thumbnail of this post so I did a little digging and found this: The PDF to the Paper where the whole picture is
Life_inst_bad
That would be "accepting the premise of assholes" as Louis Rossman would say.
Grayjay is also a option if you want to avoid the ads. Eddit* spelling changed from Gayjay to Grayjay
Wild theory: could it have been malicious compliance? Maybe the dev got a written notice to do it that way from some incompetent manager.
Hang them in the sun, the UV radiation kills most of the germs
I am pretty certain my Audi 80 from 1994 doesn't know anything about me. Can't opt out, if it doesn't collect anything.
The App (Drip) gives you after about 3 months acurate times on when the period should start. If you want accurate fertility tracking your girlfriend will have to measure her basal temperature (ar best daily) and either look out for changing cervical mucus or change in cervix opening/hardness.
"Seal downloader" from the Playstore and "Seal" from F-Droid are 2 very different apps. One is a a clone riddled with ads, the other one is FOSS goodness. You are free to guess which is which.