sobgg VS boardgamegeek4android

But there is still room to grow. For example on Chrome, I can say, me as the developer, "hey my extension is open-source and go check it yourself it's not harmful!". But there is no internal system on the chrome store that actually verifies that the code that I publish matches the open-source code I tell it is. So nothing prevents me from hiding dirty code in theory. But as I mentioned, this "dirty code" is becoming more difficult to add thanks to recent work of browser companies.

No problem. I use BGG collections and logging. Sometimes I log directly from the web, but usually use the BoardGameGeek4Android app from here: https://github.com/ccomeaux/boardgamegeek4android It just syncs with your collection and plays with a nice UI for Android.

The "official" app (open source, but published with permission of bgg's owner) got removed from the Play store for not being official enough. Google incorrectly flagged it as impersonating BGG and their customer service is on par with your average Somalian prison, so that never got corrected. You can download the apk directly from GitHub.

I use this app: https://github.com/ccomeaux/boardgamegeek4android - it's a clean UI, you can sort & filter your collection - and save the filters.