Frequently asked questions
Does the calculator handle scientific functions?
Yes — sin, cos, tan, log, ln, sqrt, exponents, pi, e, parens, percentages. The expression engine is hand-built (no eval), so nothing you type can run as code.
Will the world clock save my picks?
Yes — your selected cities are stored in `localStorage` so they're there next time you open the tool. Same for calculator history.
Are my files uploaded anywhere?
No. Every SnapToolz tool runs entirely in your browser using JavaScript and WebAssembly. Files are read locally, processed in memory, and the result is offered as a download. There is no backend.
Is everything free?
Yes — every tool in this category and on the entire site is free with no sign-up, no daily limit, and no watermark.