Smartphone shopping list vs screen going off

[sochers]

I'm using the http://www.listonic.com/ online shopping list (With android app) - and I found irritating screen going off while I was choosing/searching stuff on shelves, so I created this flow. When I start the Listonic app, it changes screen timeout to 10 minutes and notifies me on bar (detail, but i like it ), when I close app - it changes screen timeout back to 30s.