Base Counter is a professional multi-base learning and calculation tool designed for students, programmers, engineers and anyone learning number systems. The app helps users understand how counting works across different bases, from binary to hexadecimal, with a clear visual counter and step-by-step explanation. Main features: * Count in bases from 2 to 16 * Step-by-step up counting * Automatic counting mode * Target number setting * End behaviour options: stop, auto down count, or restart * Clear carry and borrow explanation * Place value display * Built-in base calculator * Binary, decimal and hexadecimal conversion * Custom keypad for 0–9 and A–F * English default interface * Traditional Chinese and Simplified Chinese support * Multiple visual themes * Local settings persistence Base Counter is useful for learning binary, decimal, hexadecimal and other radix systems in a simple, visual and practical way.