Contact Us

Bug reports, feature ideas, corrections, or just a story about your last trip — we'd love to hear from you.

Send us a message

This form opens your own email app (mailto). Nothing is sent through our servers.

What happens next Clicking "Open email app" will compose a new message to zjp133@outlook.com using the name and message you entered. If no mail app is set up on your device, copy the address below instead.

Frequently asked questions

Do I need to create an account?

No. Every tool works instantly in your browser with no sign-up. Your favorites and saved plans are stored locally on your device.

Is there a limit on how many times I can use the tools?

No. All 16 tools are free with unlimited use today. A future Pro tier may add advanced exports and cloud sync, but the core calculators stay free.

Why do my saved plans disappear after I clear browser data?

Because we have no accounts and no server, your plans live in your browser's localStorage. Clearing site data wipes them. This is the privacy trade-off — nothing about you leaves your device.

How accurate are the calculator results?

They use well-established models (Naismith's Rule, MET tables) and are designed for planning estimates, not precision engineering. Always cross-check with real trail conditions and your own experience.