diff --git a/README.md b/README.md
index c152338..cd61d04 100644
--- a/README.md
+++ b/README.md
@@ -146,6 +146,7 @@ Reach out to [ilya@spurwing.io](ilya@spurwing.io) for an intro call.
 - [Free Marketing guides by Kissmetrics](http://blog.kissmetrics.com/marketing-guides/)
 - [Elements of a viral launch page by SmashingMagazine](http://www.smashingmagazine.com/2011/09/01/elements-of-a-viral-launch-page/)
 - [Self-Service SaaS: A Beginner’s Guide to Maximizing Growth](https://www.chargebee.com/resources/guides/self-service-saas-revenue-growth/) - There aren’t many resources available that thoroughly outline the basics of managing self-service revenue at a SaaS company, but Chargebee does a nice job of it in this guide. By explaining the basics, providing a framework, including real-world examples from the SaaS space, and linking out to additional resources this asset is a solid place to start!
+- [SaaS Calculator](https://saas-calculator.com) - Use SaaS Calculator to project MRR, LTV, CAC or Growth Ceiling.
 
 
 # Task Management & Collaboration