AlarmClock Deluxe (Wecker, Uhr, Timer, Stoppuhr) (de.huttersoft.mightyalarmclock) is a fork of BlackyHawky's Clock, itself based on AOSP, released under the GNU General Public License v3.0 (GPL-3.0). Does not use the internet permission, and thus is 100% offline. The location permission is used only to read the SSID of the connected Wi-Fi network for optional per-alarm Wi-Fi rules. No location data is collected or sent; the app cannot access the internet. On top of everything the original Clock app offers, AlarmClock Deluxe adds: <ul> <li>A fire queue so multiple alarms firing close together are presented one after another instead of being marked missed;</li> <li>Progressive snooze (each snooze can automatically get longer) plus a manual snooze duration picker;</li> <li>Global mute: silence or vibrate-only every alarm until a chosen time;</li> <li>Naming a new alarm right when it's created;</li> <li>Searching, filtering and extra sorting options for the alarm list;</li> <li>Tags with their own ringtone, automatically used by alarms that don't set one explicitly;</li> <li>Device-wide alarm statistics with a shareable event log;</li> <li>Wi-Fi based rules to automatically enable/disable alarms depending on the connected network;</li> <li>Plain JSON backups (no ZIP) to a folder of your choice, with optional scheduled backups;</li> <li>An experimental "exchange" mechanism to move or share alarms between devices via a shared folder;</li> <li>Multiple named stopwatches that can run in parallel, with runs recorded in the event log;</li> <li>A small rotatable timezone globe on the clock screen showing your selected world cities;</li> </ul> ...and the full original Clock feature set: <ul> <li>Set the alarms to a specific date;</li> <li>Flip and shake action to dismiss/postpone alarm;</li> <li>Turn off/postpone the alarm with the power button or volume buttons;</li> <li>Swipe to delete an alarm;</li> <li>Duplicate alarms;</li> <li>Custo