The recently updated excellent little iOS app that goes by the name of Qbright is now “under new management” and all the new reviews are saying that it’s been ruined by the latest update, and turned into an ad platform. It’s a paid app!! My findings are the same. I believe the old version was much better (yes, the new control panel in iOS7 is good for quick adjustment of brightness, but it’s three taps to get the effect that Qbright can give in one). There is lots of advice in the reviews to avoid the update – I concur.
Thankfully I have a backup copy http://bit.ly/190BYZK #Qbright
Here’s a YouTube that explains (in Spanish) in a very straightforward way how to work the older version of the app