Focusi - Study Timer is a free Android app developed by Bursting Cielo, categorized under Business and Productivity. It is a great app for anyone looking to improve their focus and productivity, especially those who struggle with procrastination. The app is designed to be a simple countdown timer for focus, revision, and work.

The app has a variety of features, including multiple time frames, pause and stop functionality, and a finish alert sound that can be turned off from the settings. It also has curated tips on how to improve focus and break free from smartphone addiction. Users can add tags to their timer sessions to keep track of what they've been studying and for how long. Focusi also has a hard mode that pins the timer screen and stops other notifications from bothering you.

In addition, the app has bar graphs that show the time spent studying with the app for the last 7-14 days, and it comes with both light and dark themes. The app also has a stopwatch functionality, which is a premium feature.

Overall, Focusi - Study Timer is a great app for people looking to complement their study sessions and improve their focus and productivity. It's easy to use and has a variety of features that make it a useful app for anyone looking for a countdown timer for focus, revision, and work.