Download STI Tx Guide
3.1.3
Updated Dec 1, 2025
Centers for Disease Control and Prevention4.20100K+ installs
All packages
Old versionsThe architecture must match your device's CPU.
How to install
On your phoneOpen the fileTap the download notification, allow installs from the app that opens it, and tap Install.Nothing else to installSee the stepsNo phone to handRun it in an emulatorLDPlayer, BlueStacks and Android Studio's emulator all install a file you drag onto their window.An Android emulatorSee the steps
Apps installed outside the Play Store don't update themselves, and Play Protect may warn even on a clean file. Get notified about new versions →Sideloading guide →