About Mendcard
A service card for each thing you look after, with a link and a sticker your customer can open with no account.
Why it exists
A heating engineer services the same boilers every autumn. A sweep comes back every year. At the end of the visit there is a paper sticker on the boiler or a line in a notebook, and a year later neither side remembers what was done or when the next one is due. The sticker fades, the notebook stays in the van, and the customer rings to ask.
Mendcard keeps that record in one place both sides can reach. You add the visit on your phone before you leave; the card works out the next due; the customer opens the link, or scans the sticker on the object, and sees the history and the date. When the house or the car is sold, the sticker stays where it is.
Who it is for
Sole traders with repeat customers: heating engineers, chimney sweeps, appliance repairers, mobile mechanics, bike mechanics and locksmiths who rekey and service locks. It suits anyone whose work comes round again on the same object.
How it is built
The pages are static files. A small server keeps your business details, cards, visits and customer requests in one database on Cloudflare. You sign in with a passkey, so the site never holds a password. Each card's link is a long random secret and the database keeps only a scrambled form of it. Customers need no account and are never sent email; their reminder is a calendar file they save themselves.
Your notes stay yours. The customer label, your notes, notes on a visit, serial numbers and registration plates are left out of everything a customer link can read, by the server, not just hidden on the page. There is no advertising, no tracking script and no data shared for marketing.
What it is not
It is not a gas safety certificate, a landlord safety record, a chimney sweeping certificate, a roadworthiness test or any legal, warranty or insurance document. It does not choose service intervals for you: the next due is the date you set. It is not a booking diary; a visit request is a message to you. Mendcard is not affiliated with any manufacturer, trade body, registration scheme or insurer.
Install it
On a phone it can sit on your home screen like an app. On an iPhone or iPad, open the Share menu in Safari and choose Add to Home Screen. On other browsers, use Install in the menu.
Contact
Questions and problem reports go to [email protected]. A report that names the page and what you pressed is the quickest to fix.