diff --git a/Apps.js b/Apps.js
index 6f8e9c5..3310aed 100644
--- a/Apps.js
+++ b/Apps.js
@@ -8,7 +8,7 @@ import {
 } from "react-native";
 import { WebView } from "react-native-webview";
 import Constants from "expo-constants";
-import AsyncStorage from "@react-native-async-storage/async-storage";
+import { AS } from "./storageControl";
 import { news } from "./config/newsUpdate";
 import { getStationList, lineList } from "./lib/getStationList";
 import { StationDeteilView } from "./components/ActionSheetComponents/StationDeteilView";
@@ -53,7 +53,7 @@ export default function Apps(props) {
 
   useEffect(() => {
     //ニュース表示
-    AsyncStorage.getItem("status")
+    AS.getItem("status")
       .then((d) => {
         if (d != news) navigate("news");
       })
@@ -62,48 +62,42 @@ export default function Apps(props) {
 
   useEffect(() => {
     //列車アイコンスイッチ
-    AsyncStorage.getItem("iconSwitch")
+    AS.getItem("iconSwitch")
       .then((d) => {
         if (d) {
           setIconSetting(d);
         } else {
-          AsyncStorage.setItem("iconSwitch", "true").then(Updates.reloadAsync);
+          AS.setItem("iconSwitch", "true").then(Updates.reloadAsync);
         }
       })
-      .catch((d) =>
-        AsyncStorage.setItem("iconSwitch", "true").then(Updates.reloadAsync)
-      );
+      .catch((d) => AS.setItem("iconSwitch", "true").then(Updates.reloadAsync));
   }, []);
 
   useEffect(() => {
     //地図スイッチ
-    AsyncStorage.getItem("mapSwitch")
+    AS.getItem("mapSwitch")
       .then((d) => {
         if (d) {
           setMapSwitch(d);
         } else {
-          AsyncStorage.setItem("mapSwitch", "false").then(Updates.reloadAsync);
+          AS.setItem("mapSwitch", "false").then(Updates.reloadAsync);
         }
       })
-      .catch((d) =>
-        AsyncStorage.setItem("mapSwitch", "false").then(Updates.reloadAsync)
-      );
+      .catch((d) => AS.setItem("mapSwitch", "false").then(Updates.reloadAsync));
   }, []);
 
   useEffect(() => {
     //駅メニュースイッチ
-    AsyncStorage.getItem("stationSwitch")
+    AS.getItem("stationSwitch")
       .then((d) => {
         if (d) {
           setStationMenu(d);
         } else {
-          AsyncStorage.setItem("stationSwitch", "true").then(
-            Updates.reloadAsync
-          );
+          AS.setItem("stationSwitch", "true").then(Updates.reloadAsync);
         }
       })
       .catch((d) =>
-        AsyncStorage.setItem("stationSwitch", "true").then(Updates.reloadAsync)
+        AS.setItem("stationSwitch", "true").then(Updates.reloadAsync)
       );
   }, []);
 
diff --git a/components/news.js b/components/news.js
index b9883d4..0b95e3b 100644
--- a/components/news.js
+++ b/components/news.js
@@ -2,7 +2,7 @@ import React from "react";
 import { View, Text, TouchableOpacity } from "react-native";
 import { WebView } from "react-native-webview";
 import StatusbarDetect from "../StatusbarDetect";
-import AsyncStorage from "@react-native-async-storage/async-storage";
+import { AS } from "../storageControl";
 import { news } from "../config/newsUpdate";
 var Status = StatusbarDetect();
 export default function News(props) {
@@ -30,7 +30,7 @@ export default function News(props) {
           alignItems: "center",
         }}
         onPress={() => {
-          AsyncStorage.setItem("status", news);
+          AS.setItem("status", news);
           navigate("Apps");
         }}
       >
diff --git a/components/settings.js b/components/settings.js
index 7d567b0..f0f7cbb 100644
--- a/components/settings.js
+++ b/components/settings.js
@@ -2,7 +2,7 @@ import React, { useState, useEffect } from "react";
 import { View, Text, TouchableOpacity } from "react-native";
 import * as Updates from "expo-updates";
 import StatusbarDetect from "../StatusbarDetect";
-import AsyncStorage from "@react-native-async-storage/async-storage";
+import { AS } from "../storageControl";
 var Status = StatusbarDetect();
 import { Switch } from "react-native-elements";
 
@@ -14,9 +14,9 @@ export default function Setting(props) {
   const [mapSwitch, setMapSwitch] = useState(undefined);
   const [stationMenu, setStationMenu] = useState(undefined);
   useEffect(() => {
-    AsyncStorage.getItem("iconSwitch").then(setIconSetting);
-    AsyncStorage.getItem("mapSwitch").then(setMapSwitch);
-    AsyncStorage.getItem("stationSwitch").then(setStationMenu);
+    AS.getItem("iconSwitch").then(setIconSetting);
+    AS.getItem("mapSwitch").then(setMapSwitch);
+    AS.getItem("stationSwitch").then(setStationMenu);
   }, []);
   return (
     <View style={{ height: "100%", backgroundColor: "#0099CC" }}>
@@ -134,9 +134,9 @@ export default function Setting(props) {
         }}
         onPress={() => {
           Promise.all([
-            AsyncStorage.setItem("iconSwitch", iconSetting.toString()),
-            AsyncStorage.setItem("mapSwitch", mapSwitch.toString()),
-            AsyncStorage.setItem("stationSwitch", stationMenu.toString()),
+            AS.setItem("iconSwitch", iconSetting.toString()),
+            AS.setItem("mapSwitch", mapSwitch.toString()),
+            AS.setItem("stationSwitch", stationMenu.toString()),
           ]).then(() => {
             Updates.reloadAsync();
           });
diff --git a/components/trainMenu.js b/components/trainMenu.js
index 7e9f0e9..4c9d001 100644
--- a/components/trainMenu.js
+++ b/components/trainMenu.js
@@ -1,6 +1,5 @@
 import React, { useRef } from "react";
 import { View, Text, TouchableOpacity, Linking } from "react-native";
-import AsyncStorage from "@react-native-async-storage/async-storage";
 import MapView, { Marker } from "react-native-maps";
 import { MaterialCommunityIcons } from "@expo/vector-icons";
 export default function trainMenu({
@@ -101,7 +100,6 @@ export default function trainMenu({
           alignItems: "center",
         }}
         onPress={() => {
-          AsyncStorage.setItem("status", "2022/04/14");
           navigate("Apps");
         }}
       >
diff --git a/storageConfig.js b/storageConfig.js
new file mode 100644
index 0000000..8b1c3a0
--- /dev/null
+++ b/storageConfig.js
@@ -0,0 +1,27 @@
+import Storage from "react-native-storage";
+import AsyncStorage from "@react-native-async-storage/async-storage";
+
+const storage = new Storage({
+  // maximum capacity, default 1000 key-ids
+  size: 10000,
+
+  // Use AsyncStorage for RN apps, or window.localStorage for web apps.
+  // If storageBackend is not set, data will be lost after reload.
+  storageBackend: AsyncStorage, // for web: window.localStorage
+
+  // expire time, default: 1 day (1000 * 3600 * 24 milliseconds).
+  // can be null, which means never expire.
+  defaultExpires: null,
+
+  // cache data in the memory. default is true.
+  enableCache: true,
+
+  // if data was not found in storage or expired data was found,
+  // the corresponding sync method will be invoked returning
+  // the latest data.
+  sync: {
+    // we'll talk about the details later.
+  },
+});
+
+export default storage;
diff --git a/storageControl.js b/storageControl.js
new file mode 100644
index 0000000..4f43140
--- /dev/null
+++ b/storageControl.js
@@ -0,0 +1,14 @@
+import storage from "./storageConfig.js";
+
+export const AS = {
+  getItem: (key) => storage.load({ key }),
+  setItem: (key, data) =>
+    storage.save({
+      key, // Note: Do not use underscore("_") in key!
+      data,
+
+      // if expires not specified, the defaultExpires will be applied instead.
+      // if set to null, then it will never expire.
+      expires: null,
+    }),
+};