: On your Android device, go to Settings > Security (or Apps > Special app access ) and toggle on "Install unknown apps" for your browser or file manager.
: The most secure way to get the latest stable version is via the SleepCloud Play Store page . Download Sleep Cloud v10 build 132 apk
: Syncs your sleep history, graphs, and statistics once a week (Free) or after every session (PRO). : On your Android device, go to Settings