diff --git a/src/android.ts b/src/android.ts
index e0502a5..c891f06 100644
--- a/src/android.ts
+++ b/src/android.ts
@@ -16,10 +16,16 @@ export const getAndroidVersion = async (storeURL = '') => {
   });
 
   const matches = response.match(/\[\[\[['"]((\d+\.)+\d+)['"]\]\],/);
+  const releaseNotes = response.match(
+    /<div\s*itemprop="description">(.*?)<\/div>/gm
+  )?.[0];
 
-  if (!matches) {
+  if (!matches && !releaseNotes) {
     throw new Error("can't get android app version.");
   }
 
-  return matches[1];
+  return {
+    version: matches?.[1] ?? '',
+    releaseNotes: releaseNotes ?? '',
+  };
 };
diff --git a/src/index.ts b/src/index.ts
index 6d3fb61..dc93c96 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -16,8 +16,17 @@ type CheckVersionResponse = {
   remote: string;
   result: 'new' | 'old' | 'equal';
   detail: 'remote > local' | 'remote < local' | 'remote === local';
+  releaseNotes: string;
+
+  packageSize?: number;
 };
 
+interface StoreFetchResponse {
+  version: string;
+  releaseNotes: string;
+  packageSize?: number;
+}
+
 export const compareVersion = (
   local: string,
   remote: string
@@ -49,10 +58,10 @@ const checkVersion = async (
   }
 
   /* get version */
-  let remoteVersion: string;
+  let dataStore: StoreFetchResponse;
 
   try {
-    remoteVersion =
+    dataStore =
       Platform.OS === 'ios'
         ? await getIOSVersion(params.iosStoreURL, params.country || 'jp')
         : await getAndroidVersion(params.androidStoreURL);
@@ -64,7 +73,7 @@ const checkVersion = async (
     throw new Error(`can't get ${Platform.OS} version`);
   }
 
-  const result = compareVersion(params.version, remoteVersion);
+  const result = compareVersion(params.version, dataStore.version);
   let detail: CheckVersionResponse['detail'];
   switch (result) {
     case 'new':
@@ -81,9 +90,11 @@ const checkVersion = async (
   /* compare version */
   return <CheckVersionResponse>{
     local: params.version,
-    remote: remoteVersion,
+    remote: dataStore.version,
     result,
     detail,
+    releaseNotes: dataStore.releaseNotes,
+    packageSize: dataStore.packageSize,
   };
 };
 
diff --git a/src/ios.ts b/src/ios.ts
index c7e4440..e3743ce 100644
--- a/src/ios.ts
+++ b/src/ios.ts
@@ -18,9 +18,15 @@ export const getIOSVersion = async (storeURL = '', country = 'jp') => {
     .then((r) => r.text())
     .then((r) => JSON.parse(r));
 
-  if (!response || !response.results || response.results.length === 0) {
+  if (!response?.results || response.results.length === 0) {
     throw new Error(`appID(${appID[1]}) is not released.`);
   }
 
-  return response.results[0].version as string;
+  return {
+    version: response.results[0].version as string,
+    releaseNotes: response.results[0].releaseNotes as string,
+
+    /**kb */
+    packageSize: response.results[0].fileSizeBytes,
+  };
 };