diff --git a/apps/vpnmanager/src/lib/statistics.ts b/apps/vpnmanager/src/lib/statistics.ts
index f176c9605..d4b994e9b 100644
--- a/apps/vpnmanager/src/lib/statistics.ts
+++ b/apps/vpnmanager/src/lib/statistics.ts
@@ -2,37 +2,10 @@ import { NextApiRequest } from "next/types";
 import { OutlineVPN } from "./outline";
 import { Filters, Model, Record } from "@/vpnmanager/lib/data/database";
 
-interface UserDataUsage {
-  outlineId: string | number;
-  usage: number;
-}
-
 const vpnManager = new OutlineVPN({
   apiUrl: process.env.NEXT_APP_VPN_API_URL as string,
 });
 
-function calculateDailyDataUsage(userData: UserDataUsage) {
-  if (!userData) {
-    return 0;
-  }
-
-  const { usage, outlineId } = userData;
-  const yesterday = new Date();
-  yesterday.setDate(yesterday.getDate() - 1);
-
-  const lastWeek = new Date();
-  lastWeek.setDate(yesterday.getDate() - 7);
-  const [res] = Model.getAll({
-    orderBy: "date DESC",
-    date: {
-      start: `${lastWeek.getFullYear()}-${lastWeek.getMonth() + 1}-${lastWeek.getDate()}`,
-      end: `${yesterday.getFullYear()}-${yesterday.getMonth() + 1}-${yesterday.getDate()}`,
-    },
-    userId: outlineId?.toString(),
-  }) as Record[];
-  return usage - (res?.cumulativeData || 0);
-}
-
 export async function processUserStats() {
   const date = `${new Date().getFullYear()}-${new Date().getMonth() + 1}-${new Date().getDate()}`;
   const { bytesTransferredByUserId = {} } = await vpnManager.getDataUsage();
@@ -43,10 +16,7 @@ export async function processUserStats() {
     const userDetails = allUsers.find(({ id }) => id === key);
     const newData = {
       userId: key,
-      usage: calculateDailyDataUsage({
-        outlineId: key,
-        usage: bytesTransferredByUserId[key],
-      }),
+      usage: Math.ceil(bytesTransferredByUserId[key] / 30),
       date,
       cumulativeData: bytesTransferredByUserId[key],
       email: userDetails?.name || "",