Simplenote
As you can guess by its name, Simplenote is a simple but powerful app that can help you manage all your notes in one place — or multiple places.
For starters, you can create and organize your tags however you want. You can create tags for specific notes and even share them with your friends or coworkers, making it easier to collaborate with other people.
And like other options on the list, Simplenote also lets you sync your notes across all your devices. You can start writing on your iPhone and pick up where you left off with your Mac.
But Simplenote has one thing that not every note-taking app has: a Home Screen widget. You can quickly access all your notes from your iPhone’s Home Screen with just one tap.