This app is a tool-focused application designed to build and enhance mental and abacus calculation skills. It provides systematic training paths for both beginners who need to consolidate foundations and experienced learners seeking breakthroughs, offering suitable practice modules to efficiently improve computing ability.

* Fundamental Operations: Covers the four core operations (addition, subtraction, multiplication, division) with focused practice modes to solidify basic logic and techniques.

* Advanced Progressive Training: Rich higher-level modules including mixed operations, decimal calculations, rapid calculation drills, number memory, listening-based calculation, and voucher/invoice style computation for different advancement stages.

* User-Friendly Experience: Clean and concise UI, intuitive interaction, no learning burden, all features free with no paywall.