diff --git a/README.md b/README.md
index 8b92114..876ebf0 100644
--- a/README.md
+++ b/README.md
@@ -4,8 +4,9 @@
 [![GitHub release](https://img.shields.io/github/release/mssun/pass-ios.svg)](https://github.com/mssun/pass-ios/releases)
 ![Swift 3.1](https://img.shields.io/badge/Swift-3.1-orange.svg)
 
-`pass` is a password manager using GPG for encryption and Git for verstion
-control. Pass for iOS is an iOS app using password management model of `pass`.
+Pass for iOS is an iOS client compatible with [ZX2C4's Pass command line
+application](http://www.passwordstore.org/).  It is a password manager using
+GPG for encryption and Git for version control.
 
 ## Screenshots