Most language apps are good at getting words into your head. Fewer help with the next step: putting those words into a sentence of your own and finding out whether a native speaker would say it that way. GogaQ is an iPhone and iPad app that my company, Washitsu, makes for that step. You learn sentences grouped by situation, answer in your own words, and get a correction that shows what to delete, what to add and why. What a correction looks like Here is a Quick Composition rou...