Is there any alternative to iKeywi? Swipe select and the 5th row have been nice. But it looks like that the development of the App Store version has stopped. Last update october 2014, still no qwertz layout and no response from the developer via email/twitter. I heard nintype has the swipe select feature, but it looks like an overkill for my needs.
Two other keyboards with 5th row mentioned in the topic start post are:
SimpleKey (free), ai.type keyboard (free). I'm not sure if they have the swipe select feature that you are looking for. Only ai.type supports the German language.