diff --git a/README.md b/README.md
index 59d9e52..c874335 100644
--- a/README.md
+++ b/README.md
@@ -128,7 +128,7 @@ Have something that belongs under "Buzzing"? drop me a line: flutter[at]robbieon
 ### Build & Development
 
 - [Flutter Plugin for Intellij](https://github.com/flutter/flutter-intellij)
-- [Observatory](https://flutter.io/debugging/#dart-observatory-statement-level-single-stepping-debugger-and-profiler) Profiler for Dart Apps, allocated memory, fragmentation, leaks, timing.
+- [Mutisya](http://mutisya.com/) - Online Flutter Studio by [Paul Mutisya](https://medium.com/@pmutisya)
 - [Travis CI for Flutter](https://github.com/yjbanov/flutter_travis_sample) - by [Yegor Jbanov](https://twitter.com/yegorjbanov)
 
 ### Styling