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Install the Android build
Universal Cards Market — internal preview APK · v1.0.5
Scan with your Android camera to open the install link
or
Download APK directly (v1.0.5)
1Open this on the Android phone you want to install on.
2Android will warn about installing from an unknown source — that's expected for a non–Play Store build. Allow it.
3Install completes like any normal app. If you have a v1.0.3-or-earlier build already installed, uninstall it first — this build uses a different signing key, so Android won't update over it directly. Your cards aren't affected; they're backed up to the cloud and restore on sign-in.