PercentSwift focuses on one job: helping people calculate percentages, discounts, increases, decreases, tax, tips, and percentage differences quickly. The calculator is intentionally lightweight, mobile-friendly, and free to use.
Calculator-first design
The calculator is the main product. Supporting explanations, FAQs, and formulas are kept compact so users can get answers first and read only when they need extra context.
Accuracy matters
PercentSwift uses decimal-safe calculation logic instead of relying only on floating-point math. That helps keep common decimal, money, and percentage calculations reliable.
Privacy-conscious by default
Calculator inputs are processed in the browser during normal use. No account is required, and the tool is designed to work without collecting personal details from users.