diff --git a/app/src/main/res/values-es/strings.xml b/app/src/main/res/values-es/strings.xml
new file mode 100644
index 0000000..8f4f0ed
--- /dev/null
+++ b/app/src/main/res/values-es/strings.xml
@@ -0,0 +1,40 @@
+<resources>
+    <!-- App details -->
+    <string name="appName">Infinite Timer</string>
+    <string name="appVersion">v20250711</string>
+    <string name="TAG">com.hyperling.apps.infinitetimer</string>
+
+    <!-- Keys -->
+    <string name="keySharedPreferences">InfiniteTimer</string>
+    <string name="keyDebug">DEBUG</string>
+    <string name="keyChronometerTime">ChronometerTime</string>
+    <string name="keyLoopInterval">LoopInterval</string>
+    <string name="keyStartStop">StartStop</string>
+    <string name="keyAppOpen">AppOpen</string>
+    <string name="keyServiceRunning">ServiceRunning</string>
+
+    <!-- UI Text -->
+    <string name="btnStart">Empezar</string>
+    <string name="btnStop">Terminar</string>
+    <string name="btnChooseTime">Elige un Tiempo</string>
+    <string name="btnReset">Reiniciar</string>
+    <string name="btnPause">Pausa</string>
+    <string name="btnResume">Seguir</string>
+
+    <string name="chronometerDefault">00:00:00</string>
+
+    <string name="tvHoursHint">Horas</string>
+    <string name="tvMinutesHint">Minutos</string>
+    <string name="tvSecondsHint">Segundos</string>
+    <string name="tvMillisHint">Millis</string>
+    <string name="tvDot">.</string>
+
+    <string name="tvUpperLabel"><b>Tiempo entre notificaciones:</b></string>
+    <string name="tvLowerLabel"><b>Cuenta regresiva hasta notificación:</b></string>
+
+    <string name="action_millis">Enable Millisecs</string>
+    <string name="action_enable_ads">Enable Ads</string>
+    <string name="action_exit">Exit</string>
+
+    <string name="tvSeekBar">Volumen: </string>
+</resources>