Reputable examples (as of 2026) include Mullvad, ProtonVPN, IVPN, and Windscribe (for budget users). For Persian/Farsi-speaking users seeking "رایگان" (free) services, the only safe free options are the limited tiers of ProtonVPN or Windscribe—never from an unknown "Biubiu" or garbled-named app.
You can find APK files on sites like APKMirror or APKPure , but the official stores are safer. Important Safety Note danlwd Biubiu Vpn raygan farsrwyd