Install the App in 3 Steps
The atm4d2 login app is not on Google Play — you download the APK directly from our site, which takes about a minute on a standard mobile connection. Android requires one settings change before install; iOS uses a direct link with no sideloading needed. Once installed, sign in with your existing account credentials or open a new account from the app's welcome
screen. The whole process from download to lobby takes under five minutes on most devices.
- Download the APK — Visit atm4d2 login on your phone browser and tap the Android or iOS download button. The APK file is around 30MB and downloads directly to your device.
- Allow Install from Unknown Sources — On Android, go to Settings → Apps → Special App Access → Install Unknown Apps, then allow your browser to install. This is a one-time step.
- Open and Sign In — Tap the installed app icon, enter your account username and password, or use fingerprint if you set it up. The full lobby opens immediately after login.