iPhone: You certainly don't have a shortage of iPhone notes apps to choose from, but UpWord Notes sets itself apart by making it incredibly easy to format everything. UpWord Notes is a note-taking app that makes it easy to manage your notes, turn them into lists or format them with gestures.
You can use UpWord Notes as a plain old notes app where your notes are organised into folders, or you can do a bit more with it if you'd like. With a swipe, you can instantly turn a note into a list or set up a reminder so you don't forget it. You can also sort and organise notes in a variety of ways, favourite notes to keep them on top, archive what you've already taken care, and search through your old notes. It's easy to use and the gesture actually make it kind of fun to get around the app. Everything is synced up to Dropbox as plain text so you can access it from anywhere.
On the note-taking app feature scale, UpWord Notes falls somewhere in the Goldilocks region between the feature-packed Evernote and the minimalist Simplenote. It's fast and opens right up, but has enough organisation and formatting options that you can customise it for your use.
UpWord Notes ($0.99) [iTunes App Store]