diff --git a/README.md b/README.md
index b76e5c7..7e16b55 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,8 @@
 A simple system for creating multiple-choice questions for an audience to
 answer on their phones.  Responses are tallied and displayed in real-time.
 
+Demo: https://openquestion.netsyms.com/
+
 Installation
 ------------
 0. Install Apache, PHP 7, and a database (MySQL, but others will probably work too).