Several customers have been tried for this by drilling 'holes' on the new iPhone 7 after watching this prank video on YouTube, suggesting that the process may help them bring back their missing 3.5mm headphone jack.
WriteChain is an iPhone writer's app created by the author of the blog, How Not to Write. It features a wordcount function which adds up your wordcount on writing projects day by day, notifying you when you forget to write (or break the chain). Available through the ITunes application store, with instructions on this blog.