What happened to this app?!

It was amazing before the update!
How can I go back to the older version? Really screwed up this app. It was perfect before! So upset as I used this app every day! The whitening tool is too precise! Im using my finger on an iPhone not using a mouse on a computer to make edits. This app is not user friendly anymore! So disappointed!

Kattakkat about Photo Editor-, v5.0.2