diff --git a/Projects/1-Beginner/Calculator-App.md b/Projects/1-Beginner/Calculator-App.md
index be10ecbb..51939629 100644
--- a/Projects/1-Beginner/Calculator-App.md
+++ b/Projects/1-Beginner/Calculator-App.md
@@ -45,6 +45,7 @@ currently displayed.
 allows floating point numbers up to 3 places to be entered and operations to
 be carried out to the maximum number of decimal places entered for any one
 number.
+-   [ ] User can input the expression as string like (a + b)/c + d
 
 ## Useful links and resources
 
diff --git a/Projects/3-Advanced/Chat-App.md b/Projects/3-Advanced/Chat-App.md
index 05009508..a674951e 100644
--- a/Projects/3-Advanced/Chat-App.md
+++ b/Projects/3-Advanced/Chat-App.md
@@ -21,6 +21,8 @@ As a MVP(Minimum Viable Product) you can focus on building the Chat interface. R
 -   [ ] User can select and send an emoji
 -   [ ] Users can chat in private
 -   [ ] Users can join `channels` on specific topics
+-   [ ] Users can get notification box when have new message
+-   [ ] Users can mute message of someone or a group chat
 
 ## Useful links and resources