Scientific Calculator (NHA) is 100% free, ad-free, useful, powerful. User manual: https://sites.google.com/view/nhagames/user-manual/scientific-calculator Features: • No Ad. • Natural input method: Infix notation, cursor edit,... • Storable variables. • Solve Function (Newton's Method). • Differential, Integration calculations. • Fraction calculations. • Percentage calculations (e.g. calculate discount, premium,...) • Degree, minutes, seconds calculations (e.g. calculate time) • Complex Number