Waterlogue is a high quality water-color filter app for photo. You could remember it from a demo at WWDC when Craig used the app to showcase an extensibility by transforming a photo of flower into water-color picture. THAT's so cool. The bad news? Waterlogue is not compatible with iOS 8 yet. Why? I emailed a developer and here is a reply I'm not sure what's going on here? Why Apple didn't help the developer get his app up to what was being demoed on stage? Is this the first time? Now how can we trust the demo at the WWDC if something like this can happen?