Lately, I've been really liking this one RSS app, called Feeder from F-Droid. But I have some concerns about using it.
Most of the time, the app seems to use its own way of fetching & displaying text/images from websites instead of using Graphene's Vanadium browser and webview. I'm concerned that the app's method of receiving content, from websites, may be full of security holes & vulnerabilities(e.g. not getting all content via HTTPS only or there being a vulnerability in the way it parses text/images) since this app wouldn't be put through the same rigor, testing, and quality control as the GrapheneOS project is(and by extension, Graphene's hardened browser and webview implementation). And since I'm not very tech-savvy or a programmer, I don't know how to check for such things in this app's source code, let alone know what things to check for in the first place.
Should I stop using the app? Or are my concerns overblown and the things that it's doing(i.e. grabbing and displaying text(probably plain text?) and images) so simple that there's hardly any room for vulnerabilities?