If you prefer to run something like this locally while maintaining 100% ownership and control of your files here is my android app I wrote 6 months ago: https://play.google.com/store/apps/details?id=com.luksapps.i... It uses the best open model on the market to run up scaling (multiple versions of Real-ESRGAN) and runs them in 10s~up to few min per photo on relatively modern mobile phones. This is a free ad supported…
Nice! however, it says not available for my device (Galaxy Flip 4). Hopefully at some point it will be?
This is a fast phone with a modern Gpu (Adreno 730), it should run much better than on my devices. Perhaps it's because I haven't released Android 13 version yet? Are you running Android 13 by any chance? If you'd like you can check by clicking on the Settings, then on the very bottom click on "About phone" then on "Software information". There should be "Android version" in there.
I'll make a new release in few days.