diff --git a/mobile/lib/pages/finish_shopping_page.dart b/mobile/lib/pages/finish_shopping_page.dart
index 9a725a2..2b1a6c5 100644
--- a/mobile/lib/pages/finish_shopping_page.dart
+++ b/mobile/lib/pages/finish_shopping_page.dart
@@ -3,7 +3,6 @@ import 'package:mobile/controllers/routing.dart';
 import 'package:mobile/controllers/cart.dart';
 import 'package:mobile/controllers/paying_state.dart';
 import 'package:mobile/controllers/receipt.dart';
-import 'package:mobile/controllers/session.dart';
 import 'package:mobile/results.dart';
 import 'package:mobile/utils/price.dart';
 import 'package:mobile/widgets/primary_button.dart';
diff --git a/mobile/lib/pages/settings_pages/saldo.dart b/mobile/lib/pages/settings_pages/saldo.dart
index 88d96db..5214825 100644
--- a/mobile/lib/pages/settings_pages/saldo.dart
+++ b/mobile/lib/pages/settings_pages/saldo.dart
@@ -1,7 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:mobile/controllers/session.dart';
 import 'package:mobile/results.dart';
-import 'package:mobile/utils/build_if_session_exists.dart';
 import 'package:mobile/utils/price.dart';
 import 'package:provider/provider.dart';
 
diff --git a/mobile/lib/server/backend_server.dart b/mobile/lib/server/backend_server.dart
index 2e6229e..95eb651 100644
--- a/mobile/lib/server/backend_server.dart
+++ b/mobile/lib/server/backend_server.dart
@@ -49,7 +49,7 @@ class BackendServer implements Server {
     ).then((res) => json.decode(res.body));
 
     if (res["ok"]) {
-      return Ok(null);
+      return const Ok(null);
     } else {
       return Err(res["msg"]);
     }
@@ -79,7 +79,7 @@ class BackendServer implements Server {
     ).then((res) => json.decode(res.body));
 
     if (res["ok"]) {
-      return Ok(null);
+      return const Ok(null);
     } else {
       return Err(res["msg"]);
     }
@@ -108,7 +108,7 @@ class BackendServer implements Server {
               {"product_id": cartItem.product.id, "amount": cartItem.amount})
           .toList()
     });
-    print(items);
+    (items);
     final res = await http
         .post(Uri.parse("$_apiUrl/carts/purchase"),
             headers: {
@@ -134,7 +134,6 @@ class BackendServer implements Server {
 
   @override
   Future<Result<Null, String>> addBalance(String token) async {
-    print("$_apiUrl/api/users/balance/add");
     final res = await http.post(
       Uri.parse("$_apiUrl/users/balance/add"),
       headers: {
@@ -145,7 +144,7 @@ class BackendServer implements Server {
     ).then((res) => json.decode(res.body));
 
     if (res["ok"]) {
-      return Ok(null);
+      return const Ok(null);
     } else {
       return Err(res["msg"]);
     }
diff --git a/mobile/lib/server/mock_server.dart b/mobile/lib/server/mock_server.dart
index 33ad079..e068640 100644
--- a/mobile/lib/server/mock_server.dart
+++ b/mobile/lib/server/mock_server.dart
@@ -97,7 +97,7 @@ class MockServer implements Server {
     String email,
     String password,
   ) async {
-    return Ok(null);
+    return const Ok(null);
   }
 
   @override
@@ -105,12 +105,12 @@ class MockServer implements Server {
     String email,
     String password,
   ) async {
-    return Ok("asdsadasdsad");
+    return const Ok("aasffsa");
   }
 
   @override
   Future<Result<Null, String>> logout(String token) async {
-    return Ok(null);
+    return const Ok(null);
   }
 
   @override
@@ -125,11 +125,11 @@ class MockServer implements Server {
   @override
   Future<Result<Null, String>> purchaseCart(
       String token, List<CartItem> cartItems) async {
-    return Ok(null);
+    return const Ok(null);
   }
 
   @override
   Future<Result<Null, String>> addBalance(String token) async {
-    return Ok(null);
+    return const Ok(null);
   }
 }
diff --git a/mobile/lib/utils/build_if_session_exists.dart b/mobile/lib/utils/build_if_session_exists.dart
deleted file mode 100644
index 4282fc3..0000000
--- a/mobile/lib/utils/build_if_session_exists.dart
+++ /dev/null
@@ -1,3 +0,0 @@
-import 'package:flutter/material.dart';
-import 'package:mobile/controllers/session.dart';
-import 'package:mobile/models/user.dart';