RelationTips App:
https://itunes.apple.com/app/relationtips/id306421823?mt=8

Fix a Fight App:
https://itunes.apple.com/us/app/fix-a-fight/id376117430?mt=8

App with questionnaires for partners to compare priorities:
https://www.embre.com/glow/

App with pre-written romantic texts:
http://romantimatic.com

Relationship Apps from The Gottman Institute on iTunes:
https://itunes.apple.com/us/artist/the-gottman-institute/id389288070