You'll need to enable "Install from Unknown Sources" in your Android settings. This is normal for apps not distributed through the Play Store.
Download the APK
Click the download button above or scan the QR code with your Android device. The APK file will be saved to your Downloads folder.
Enable Unknown Sources
Go to Settings → Security → Install unknown apps (or Settings → Apps → Special access → Install unknown apps). Select your browser or file manager and enable "Allow from this source."
Install the App
Open the downloaded APK file from your Downloads folder or notification panel. Tap "Install" and wait for the installation to complete.
Connect Your Hardware
Open the Oil Heater app and follow the on-screen instructions to pair with your Oil Heater Controller hardware device via Bluetooth.
🔒 Security Note
This app is safe to install. All CrewChiefSteve apps are signed with our official developer certificate. You may see a security warning because the app is not from the Play Store - this is normal.