Since some time I've searched photos related apps, to edit and take pictures but I've not found anything interesting in open source... Does someone has an explaination?
companies that have the most money and resources to improve image processing don't want to disclose their findings in order to keep their advantage over the competition.
I recently discovered Image Toolbox, it has the best editing capabilities of any FOSS Android app I've seen so far. That being said, if developing RAWs is something you need as well, I don't think there exists anything besides Google's Snapseed and Lightroom mobile.
As for taking pictures, I quite enjoy OpenCamera, but there's not much else than that.
I known this app but it's not really complete, yes it has some really great features but lacks some features like light...
And OpenCamera is good but not great
It’s the same UX. Not sure how one would be less easy to use than the other just for different nomenclature & things being in slightly different locations.
Avariy was pretty good. Then Adobe bought and killed it. It's still possible to download it, but a lot of the free stuff, filters and etc are missing because they shut down the servers.
Even they would tell you that using sandboxed google play and the g cam app is a better experience if your looking for more then just snapping a photo on your phone though. As obnoxious as they can be on mastodon they are pretty honest with the limitations of their apps due to it not being as high of a priority.