Rainbow Sentences, by Mobile Education Tools, is from the same developer as LanguageBuilder, SentenceBuilder, ConversationBuilder, etc. The app targets word order/sentence structure. The student drags words or groups of words to lines above a picture to create a sentence. The words and/or lines can be color-coded. This color-coding option helps to visually train students basic sentence assembly. There are 3 levels of play:
1) Who + What doing
2) Who + What doing + Where doing
3) Who + What doing + Where doing + Why doing it
This app has been a nice addition to my 'bag of tricks' for targeting syntax. For students who are not of reading age, or struggle with reading, simply drag or move the word around a little, and the word/phrase will be read aloud. For $7.99, this app was definitely a good buy.