diff --git a/apps/debug.lua b/apps/debug.lua
new file mode 100644
index 0000000..8d11c02
--- /dev/null
+++ b/apps/debug.lua
@@ -0,0 +1,20 @@
+
+local mon = device.monitor_1
+mon.clear()
+mon.setTextScale(.5)
+_G.requireInjector(_ENV)
+
+local Util = require('util')
+
+mon.setCursorPos(1, 1)
+
+local oldDebug = _G.debug
+
+_G.debug = function(...)
+  local oldTerm = term.redirect(mon)
+  Util.print(...)
+  term.redirect(oldTerm)
+end
+ 
+pcall(read)
+_G.debug = oldDebug