Your numbers never leave your device.
What happens when you use a calculator
Everything is computed in your browser. Zarth is a set of static pages: there’s no server receiving your salary, loans or savings, and no database to store them in.
What we keep on your device
- Your last inputs for each calculator, in your browser’s local storage, so they’re still there when you come back. Clearing site data removes them.
- Your light or dark theme choice.
Share links
The page address updates with your inputs so you can bookmark or share a calculation. Anyone you send that link to will see those numbers, so share with care. Opening such a link sends its address, numbers included, to the website’s host like any page request.
Live mutual-fund prices
If you link a holding in My Money to a mutual fund, your browser asks api.mfapi.in — a free public service that republishes AMFI’s daily NAVs — for that fund’s latest NAV. Only the fund’s scheme code (or the name you search for) is sent. Your units, values and everything else stay on your device. If that service can’t be reached directly, the same request goes through a small Zarth proxy that passes on only the scheme code or the search words.
Importing a fund statement
When you import a CAMS or KFintech statement in My Money, the PDF is opened and read inside your browser. The file and its password are never uploaded, and the password isn’t saved: it opens the file once and is then forgotten. To recognise each fund, your browser downloads Zarth’s copy of AMFI’s public fund list — the same file for everyone — so nothing about which funds you hold is sent to us.
Contact form
If you use the contact form, your message — and your name and email if you choose to give them — is emailed to us through Cloudflare, with the page you came from (without any numbers in its address) and the country it was sent from. It isn’t stored on the website, and we use your email only to reply.
Analytics
Zarth runs no analytics or tracking script and sets no cookies. Cloudflare, which hosts the site, counts requests the way any web host does — things like the page visited, country and device type — and that’s how we see which pages are useful. It never sees what you type into a calculator or store in My Money.
Contact
Questions: hello@zarth.in