Fix

src/app/store/localstore.service.ts

@@ -6,13 +6,22 @@ import { AES, enc, SHA1 }  from  'crypto-js'
 })
 export class LocalstoreService {
 
-  private prefix = 'v0-'
+  private prefix = 'v2-'
 
-  constructor() { }
+  constructor() {
+    const key =  SHA1('version').toString()
+
+    if(this.get(key, false)) {
+      // alert('new Update')
+    }
+
+    this.set(key, this.prefix)
+  }
 
   getKey(keyName) {
     return this.prefix + keyName
   }
+
   get( keyName, safe) {
 
     keyName = this.getKey(keyName)
@@ -30,6 +39,8 @@ export class LocalstoreService {
         return decryptedData;
       }
 
+    } else {
+      return safe
     }
   }