What is the best app that will let me schedule messages through an iPhone?

What is the best app that will let me schedule messages through an iPhone?

Added (1). It should be able to send the messages automatically, not just pop up a notification.

Added (2). I found one called SMS Auto Sender, and it has worked great so far. I will update this comment if I have any issues in the future.

Calendar

Scheduled is a new app that lets you schedule your text messages.