Your phone makes photos with a quality that is a bit too much for you?
Your images need to take much less space and you don't care if they look awful?

Then this app might be for you!
I had these very problems and made this app in a day for myself!

Will this app also solve your problems? Maybe, I don't know!
But hey, it's a lightweight free app with no ads, there are not that many of those out there!

It's also open source: https://github.com/blazern/photo_jackal, so you also can use the code if you're in such kind of things