diff --git a/homeassistant/components/mobile_app/sensor.py b/homeassistant/components/mobile_app/sensor.py
index 6f049d6f2d5..dd70cf1e22e 100644
--- a/homeassistant/components/mobile_app/sensor.py
+++ b/homeassistant/components/mobile_app/sensor.py
@@ -103,8 +103,7 @@ class MobileAppSensor(MobileAppEntity, RestoreSensor):
 
         self._async_update_attr_from_config()
 
-    @property
-    def native_value(self) -> StateType | date | datetime:
+    def _calculate_native_value(self) -> StateType | date | datetime:
         """Return the state of the sensor."""
         if (state := self._config[ATTR_SENSOR_STATE]) in (None, STATE_UNKNOWN):
             return None
@@ -131,3 +130,4 @@ class MobileAppSensor(MobileAppEntity, RestoreSensor):
         config = self._config
         self._attr_native_unit_of_measurement = config.get(ATTR_SENSOR_UOM)
         self._attr_state_class = config.get(ATTR_SENSOR_STATE_CLASS)
+        self._attr_native_value = self._calculate_native_value()