diff --git a/main.py b/main.py
new file mode 100644
index 0000000..b7edbfb
--- /dev/null
+++ b/main.py
@@ -0,0 +1,95 @@
+from kivymd.app import MDApp
+from kivymd.uix.boxlayout import MDBoxLayout
+from kivymd.uix.button import MDRaisedButton
+from kivymd.uix.textfield import MDTextField
+import math
+
+
+class CalculatorApp(MDApp):
+    def build(self):
+        self.operators = ["/", "*", "-", "+", "."]
+        self.last_was_operator = None
+        self.last_button = None
+
+        self.theme_cls.primary_palette = "BlueGray"
+        self.theme_cls.theme_style = "Dark"
+
+        main_layout = MDBoxLayout(orientation="vertical", padding=10, spacing=10)
+
+        self.solution = MDTextField(
+            text="",
+            halign="right",
+            font_size=55,
+            readonly=True,
+            mode="rectangle",
+        )
+        main_layout.add_widget(self.solution)
+
+        buttons = [
+            ["C", "√", "%", "/"],
+            ["7", "8", "9", "*"],
+            ["4", "5", "6", "-"],
+            ["1", "2", "3", "+"],
+            ["+/-", "0", ".", "="],
+            ["1/x"]
+        ]
+
+        for row in buttons:
+            h_layout = MDBoxLayout(spacing=10)
+            for label in row:
+                button = MDRaisedButton(
+                    text=label,
+                    pos_hint={"center_x": 0.5, "center_y": 0.5},
+                    font_size=24,
+                    on_release=self.on_button_press
+                )
+                h_layout.add_widget(button)
+            main_layout.add_widget(h_layout)
+
+        return main_layout
+
+    def on_button_press(self, instance):
+        text = instance.text
+        if text == "C":
+            self.solution.text = ""
+
+        elif text == "=":
+            try:
+                self.solution.text = str(eval(self.solution.text))
+            except:
+                self.solution.text = "Error"
+
+        elif text == "√":
+            try:
+                self.solution.text = str(math.sqrt(float(self.solution.text)))
+            except:
+                self.solution.text = "Error"
+
+        elif text == "%":
+            try:
+                self.solution.text = str(float(self.solution.text) / 100)
+            except:
+                self.solution.text = "Error"
+
+        elif text == "+/-":
+            try:
+                self.solution.text = str(float(self.solution.text) * -1)
+            except:
+                self.solution.text = "Error"
+
+        elif text == "1/x":
+            try:
+                val = float(self.solution.text)
+                if val != 0:
+                    self.solution.text = str(1 / val)
+                else:
+                    self.solution.text = "Error"
+            except:
+                self.solution.text = "Error"
+
+        else:
+            self.solution.text += text
+
+
+if __name__ == "__main__":
+    CalculatorApp().run()