Помодоро Таймер+

A hybrid app combining a stopwatch and countdown timer with an analog dial, lap tracking, and customizable notifications. Works in the background, but the free version aggressively promotes premium purchases, especially to users in Russia.

Flip Clock is a simple full-screen clock with minimalist and practical page-flip animation that displays time changes.

Floating clock and timer overlay for other applications with home screen widgets, but with frequent crashes, performance degradation, and missing basic features (notifications, timer stop from menu).

Stopwatch

Seconds is a widely-used interval timer app for HIIT and Tabata training on mobile devices.

This minimalistic and beautiful Pomodoro Timer Clock will help you focus better.

A simple alarm clock with reminders that often fails to trigger at the scheduled time and requires permissions that interfere with its operation.

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.