Music Alarm Clock - Alarmus

An alarm clock that requires barcode scanning to turn off, uses loud unpredictable sounds for guaranteed awakening, but significantly drains battery and collects excessive personal data.

An alarm clock with a clock widget, sleep timer, and snooze function, but ad-heavy, unstable, and frequently unreliable.

Samsung's built-in clock app offering alarm, world time, stopwatch and timer functions, but suffering from alarm instability, UI issues after updates and missing important display features.

Alarm clock with physical "missions" (shaking, shouting, screen tapping) to wake up, mood tracker through an emotion diary with visualization on a monthly calendar, weather and news notifications, and the ability to send a message to a friend.

A simple timer and stopwatch with a large digital display for kitchen and sports use. Runs with a background service; the free version is limited to 2 timers and includes ads.

Flip Clock is a classic digital clock for the desktop.

A mobile habit tracker with visual gamification (plant), reminders, statistics, and educational content. The free version is limited to 5 habits, while the paid version provides unlimited access.

Sleep Time is a basic sleep cycle calculator that helps determine optimal wake-up or bedtime. Primarily functions as an alarm with 90-minute cycle calculations, but has stability and interface usability issues.