Earl Kelvin Baloloy
This app is spectacularly amazing, very easy to use, you just do like 3 steps(choose pic, negative then save). Ads are in the bottom part of the screen so even if they appear they're not obstructing your work. Just take note that this is an app that only focuses on making or reversing negative photos/ pics. Overall this made my work done in just 2 minutes. Yes it is "that easy" to use. I definitely recommend this if you're gonna use it for multiple photos.