Language Learning Apps Harvest Data

https://sh.itjust.works/post/5722866

Language Learning Apps Harvest Data - sh.itjust.works

I should have known if the apps free, you’re the product. Duolingo appears to harvest the most data compared to other language learning apps. Source: Surfshark Research [https://surfshark.com/research/chart/data-hungry-language-apps]

I use the web version with an adblocker and an email alias. It's not perfect, but at least I remain anonymous.
What web version? I thought they only had phone apps.
You can sign in and use Duolingo on the web. Not sure about the others.