diff --git a/apps/calculator/README.md b/apps/calculator/README.md
new file mode 100644
index 000000000..78848908a
--- /dev/null
+++ b/apps/calculator/README.md
@@ -0,0 +1,23 @@
+# Calculator
+
+Basic calculator reminiscent of MacOs's one. Handy for small calculus.
+
+<img src="https://user-images.githubusercontent.com/702227/79086938-bd3f4380-7d35-11ea-9988-a1a42916643f.png" height="48" width="48" />
+
+## Features 
+
+- add / substract / divide / multiply
+- handles floats
+- basic memory button
+
+## Controls
+
+- UP: BTN1
+- DOWN: BTN3
+- LEFT: BTN4
+- RIGHT: BTN5
+- SELECT: BTN2
+
+## Creator
+
+<https://twitter.com/fredericrous>