{{key press|Android: Store Preview}}: Available through Google Play Store's [https://play.google.com/store/apps/details?id=com.augmensys.ubik.go invitation link].
Example: Please add my email account example@example.com to the '''Preview''' test group for the '''Android''' client.
{{key press|iOS: Store Beta}}: Available through Apple App Store's [https://testflight.apple.com/join/Kmb1HG9E invitation link].