What app do poets use to make their poems look nice?

I want to start a poetry account on instagram to publish my poems that I write, but all poetry accounts make their poems look a certain way and I don't know how to do that.

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There's an example. If someone knows the iPhone app they use I'd be forever thankful:-)

Instant poetry can be a good App for you:

https://itunes.apple.com/...d353592334

Hope it helps.