From calendar apps to to-do-list apps, project management apps to note-taking apps, we’ve rounded up our favorite productivity apps for your home and workplace. Also, it's not guaranteed that the default app on your smartphone, which you've been using all along, is the best one for you. (We all use email apps, after all.) But there are different types of productivity apps. Whether you're back at the office or still working from home, organizing family vacations or helping out a friend with a project, there's a good chance you'd benefit from using a productivity app.