diff --git a/README.md b/README.md
index ea24519..841bdfe 100644
--- a/README.md
+++ b/README.md
@@ -2,3 +2,4 @@
 ## for Windows Command Prompt and Docker
 https://hub.docker.com/r/dugo3number2/calc
 `docker pull dugo3number2/calc`
+Repl.it: https://repl.it/@DavidDGTNT/calc