diff --git a/app.py b/app.py
index e69de29..326dd1f 100644
--- a/app.py
+++ b/app.py
@@ -0,0 +1,49 @@
+import random
+
+def get_user_choice():
+    while True:
+        user_choice = input("Enter your choice (rock, paper, or scissors): ").lower()
+        if user_choice in ['rock', 'paper', 'scissors']:
+            return user_choice
+        else:
+            print("Invalid choice. Please enter rock, paper, or scissors.")
+
+def get_computer_choice():
+    return random.choice(['rock', 'paper', 'scissors'])
+
+def determine_winner(user_choice, computer_choice):
+    if user_choice == computer_choice:
+        return "It's a tie!"
+    elif (user_choice == 'rock' and computer_choice == 'scissors') or \
+         (user_choice == 'paper' and computer_choice == 'rock') or \
+         (user_choice == 'scissors' and computer_choice == 'paper'):
+        return "You win!"
+    else:
+        return "You lose!"
+
+def main():
+    user_score = 0
+    computer_score = 0
+    
+    while True:
+        user_choice = get_user_choice()
+        computer_choice = get_computer_choice()
+        print(f"Computer chose: {computer_choice}")
+        
+        result = determine_winner(user_choice, computer_choice)
+        print(result)
+        
+        if result == "You win!":
+            user_score += 1
+        elif result == "You lose!":
+            computer_score += 1
+        
+        play_again = input("Do you want to play again? (yes/no): ").lower()
+        if play_again != 'yes':
+            break
+    
+    print(f"Your score: {user_score}")
+    print(f"Computer's score: {computer_score}")
+
+if __name__ == "__main__":
+    main()