Clock is a privacy-conscious open-source clock, based on AOSP.
Does not use internet permission, and thus is 100% offline.

Features:
<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>For some Snapdragon devices only, the alarm is triggered when they are switched off</li>
    <ul>
      <li>Unfortunately, this feature may not work on some devices despite the presence of the <i>"com.qualcomm.qti.poweroffalarm"</i> system app.</li>
    </ul>
  <li>Swipe to delete an alarm;</li>
  <li>Duplicate alarms;</li>
  <li>Customizable alarm title;</li>
  <li>Customizable ringtone;</li>
  <li>Ability to play ringtones randomly;</li>
  <li>Light, dark or system theme;</li>
  <li>AMOLED mode for dark theme;</li>
  <li>Customizable interface;</li>
  <li>Digital or analog clock style;</li>
  <li>Display home time when traveling;</li>
  <li>Display the time in many cities around the world;</li>
  <li>Timer and stopwatch included;</li>
  <li>Possibility of sharing your stopwatch with your contacts;</li>
  <li>Customizable screensaver;</li>
  <li>Modern widgets;</li>
  <li>Customizable widgets;</li>
  <li>Support for tiles in quick settings (for Android 7+);</li>
  <li>Backup and restore application data (except custom ringtones);</li>
  <li>Material design;</li>
  <li>Dynamic colors for Android 12+;</li>
</ul>
