Nuki iOS App Beta To become a beta tester of our Nuki iOS App you can join directly via Apple Testflight. Nuki Android App Beta To become a beta tester of the Nuki Android App go to the Nuki App in the Google Play Store and choose “Become a beta tester”. Nuki Bridge Beta To become a Bridge Firmware beta tester send us a photo of the sticker on your Nuki Bridge via email to firstname.lastname@example.org. Nuki Smart Lock Beta To become a Nuki Smart Lock Firmeware beta tester send us an email with your Smart Lock ID to email@example.com. Nuki Opener Beta To become a Nuki Opener Firmeware beta tester send us an email with your Opener ID to firstname.lastname@example.org.