Waitlist API - Quick and easy waitlist with built in referral.
Day One - A simple journal application for the Mac, iPhone, and iPad. AboutTo learn more about Day One, see these two excellent reviews . PublishPublish is not available in Day One 2.
LaunchList - Create waitlist with referral for your product launch
Journalistic - A simple, yet powerful micro journaling app
Waitlisty.io - Build excitement for your product by embedding a simple form into your website. Signups will receive a referral code to share with their friends. The more codes they share, the more they climb your waitlist.
Journaly - The customisable journal app