Use the MIR4 event tracker on your phone
Updated on 2026-09-27
If you check MIR4 schedules between sessions, you can install RaidHours from your browser as a progressive web app (PWA). It adds a shortcut to your home screen so you can return to the boss and event calendar quickly, without downloading an app from a store.
Installing it does not change your game region or sync preferences between devices. Set up each phone separately and review its browser notification settings.
1. Add RaidHours to your home screen
Open raidhours.com in your phone browser. In the browser menu, look for an option such as Install app or Add to Home Screen; the wording and availability vary by browser and operating system. Confirm to create the shortcut.
Then open RaidHours from that icon. It uses less space than a game and provides the same tracker, preferences and schedules as the website. No sign-in is required.
2. Choose your server and timezone before setting alarms
During setup, select your MIR4 server region and confirm your local timezone. RaidHours can detect your phone's timezone, but you choose the server region: the game does not know where you play. The wrong region shifts every event time.
Open World Events to see spawns converted to your clock. Favorite the events you follow and use the bell icon to choose which reminders you want. Preferences stay in this browser.
3. Reopen the tracker offline after your first visit
RaidHours caches the main application files after loading them online. Once the first visit completes and the browser has installed the service worker, the interface and schedules included in the app can reopen offline. Connect again to download updates, reach remote services or sync Web Push alarms.
Offline access helps you check the tracker; it does not mean notifications can arrive without internet. Background delivery depends on Web Push support, permission and a working connection when the alert is due.
4. Set notifications and check battery restrictions
Set an alarm from an event row and allow notifications when your browser asks. If an alert does not appear, check site permissions in the browser and app notifications in your operating system. Some battery-saving modes delay background tasks.
The tracker does not replace MIR4, and an alert cannot confirm that an event is still available in-game. Reconnect periodically so your device and RaidHours can refresh what they need, and check the game schedule after maintenance.
Preferences such as language, region, timezone, favorites and progress are stored locally. If you enable Web Push, the service stores the technical subscription and upcoming alarms needed to send alerts; see the privacy policy.
See every schedule in your local time, with live countdowns and alarms.
Open the MIR4 trackerFrequently asked questions
Is RaidHours a native Android or iPhone app?
No. It is a progressive web app you can install from a supported browser. You do not need an app-store download or an account.
Does the tracker work offline?
After the first visit, your browser can keep the app files and let you reopen the interface and schedules bundled with it. Updates and notification delivery require a connection.
Do my settings sync between my phone and computer?
No. There is no account; personal settings are stored in each device's browser. Set up your region, timezone and alarms on every device where you use the tracker.
Why am I not getting phone notifications?
Make sure you set an alarm, allowed notifications for the site, and that the operating system is not silencing notifications or restricting background activity. Web Push support varies across browsers and devices.