SovereignCopper Thanks, yeah I've tried open food facts before, which is the API that app you linked uses. It's not as feature complete as Yuka unfortunately. Open food facts doesn't really tell me that much more than I could already figure out by looking at the packaging.
When you scan something in Yuka, it not only lists the additives and nutrition info, it assigns a health risk rating to each ingredient and then includes summaries of what international research studies have said about it so you can understand the rating. The summaries also often inform you about current regulation about the additive such as whether it's been banned somewhere. It's both useful and educational.
I'm in the US which lags behind other developed countries in terms of food safety and basically treats its citizens as lab rats, so this app has been a life saver (maybe literally).
Funny enough, Yuka is the only app I have installed that requires SafetyNet. The Play Store wouldn't even let me install it saying my device isn't compatible so I had to grab it from the aurora store.