Contents

• Chapter 1. Introduction
  • 1.1 Preparation
  • 1.2 Objectives
• Chapter 2. Development
  • 2.1 Create React Project
  • 2.2 UI Layout
  • 2.3 Timer
  • 2.4 Breaks
  • 2.5 Settings
  • 2.6 Circles
  • 2.7 Add Sounds
  • 2.8 Polish