A set of offline tools to help with writing poems (currently only English is supported):
* a rhyming dictionary, using the Carnegie Mellon University pronunciation dictionary.
* a thesaurus, using the WordNet thesaurus.
* a dictionary, using the WordNet dictionary.
* a screen where you can enter your poem text, have it read aloud back to you by the device's text-to-speech engine, and see the word/character count.
The dictionaries are built in the app. No internet connection is required to use them.
This app is open source: https://github.com/caarmen/poet-assistant-ios