Keep My Friends allows you to track when you last spoke to each of your friends, and set an interval of the maximum number of days you want to allow between times that you speak to them.
Norrie Alternatives
Norrie is described as 'Personal relationship manager that helps you remember important details about the people in your life. Store birthdays, gift ideas, dietary requirements, work context, and conversation history for friends, family, and colleagues' and is a CRM system in the business & commerce category. There are more than 25 alternatives to Norrie for a variety of platforms, including iPhone, Web-based, iPad, Self-Hosted and SaaS apps. The best Norrie alternative is Monica, which is both free and Open Source. Other great apps like Norrie are Kinu, Moments, Dex and HiWork.