With Prompts you can quickly start writing about anything by adding an article. If you like creative or blog writing this is one application which you must check.
Prompts also gives you starting lines to get your thoughts going. Even while writing if you are stuck and need ideas, just click on its bolt icon and you you will have some quick tips for writing.
It allows integration with Dropbox, so all your data will be safe and accessible.
Once you are done with editing you can transfer or share content using different methods such as Email, Copy/paste, Dropbox, Facebook etc.
Overall Prompts serves its purpose well and its a great iPhone app for writers. For pure writing purposes you would love simplicity of Prompts.
However if you are looking for some advance text editor, Prompts is not for you. Because it does not provide any advance features like Image or video addition or auto complete functionality etc.