diff --git a/models/category.ts b/models/category.ts
index 964aca6..e7fcd72 100644
--- a/models/category.ts
+++ b/models/category.ts
@@ -11,6 +11,6 @@ export interface MongoCategory extends Omit<Category, 'shelves'> {
     shelves?: Array<string>, // Shelf IDs
 }
 
-export interface MobileCategory extends MongoCategory {
+export interface MobileCategory extends Category {
     _id: string,
 }
\ No newline at end of file
diff --git a/models/shelf.ts b/models/shelf.ts
index 6522dcc..887ef17 100644
--- a/models/shelf.ts
+++ b/models/shelf.ts
@@ -24,3 +24,7 @@ export interface MongoShelfWord extends Omit<ShelfWord, "word"> {
 export interface MongoShelf extends Omit<Shelf, "words"> {
     words?: Array<MongoShelfWord>
 }
+
+export interface MobileShelf extends Shelf {
+    _id: string,
+}
\ No newline at end of file
diff --git a/models/user.ts b/models/user.ts
index 8884e62..e9f86f7 100644
--- a/models/user.ts
+++ b/models/user.ts
@@ -1,4 +1,4 @@
-import { Category } from "./category";
+import { Category, MobileCategory } from "./category";
 import { Word } from "./word";
 
 export interface User {
@@ -15,4 +15,14 @@ export interface User {
 export interface MongoUser extends Omit<User, "categories" | "favouriteWords"> {
     categories?: Array<string> // Category IDs,
     favouriteWords?: Array<string> // Favourite Words ID
+}
+
+
+export interface MobileUser {
+    _id: string,
+    name: string,
+    email: string,
+    isVerified: boolean,
+    categories: Array<MobileCategory>,
+    favouriteWords?: Array<Word>,
 }
\ No newline at end of file