Allergy action cards for sitters and schools

The idea

A food-allergy parent explains the same life-or-death briefing dozens of times a year: to sitters, grandparents, school nurses, camp counsellors. The information lives in their head and in a crumpled school form, and each new format (a card for the wallet, a sheet for the fridge) means starting again in Canva. When the allergist changes the plan, every printed artefact is silently wrong.

The wedge is one profile, four synchronised outputs, and a QR on each card pointing at the live plan, so paper printed in March still resolves to the current September protocol. Etsy sellers moving 20-dollar laminated allergy cards prove the demand; they just cannot offer regeneration or a live link.

Who pays

The buyer is a parent managing a severe allergy, a demographic that famously overspends on anything reducing risk; 12 dollars one-time per child (20 for the family) via Stripe undercuts static Etsy cards while doing strictly more. Distribution: allergy-parent Facebook groups and subreddits, paediatric allergist waiting rooms, back-to-school content timed for August, and SEO on food allergy action plan template queries.

MVP scope

• Single child profile with structured allergens, symptoms, and medication plan
• Four PDF outputs: wallet card, fridge sheet, lunchbox labels, school action plan
• QR on every printout linking to a live read-only plan page
• One-click regeneration of all documents on any edit
• Watermarked free preview, Stripe one-time checkout
• Skip for v1: accounts for caregivers, translations, non-allergy conditions (asthma, diabetes), mobile app, laminated mail-order printing

Build AllergyCard, a Next.js web app where one child profile generates every allergy document a family needs, all regenerated together when anything changes.

Profile form: child's name, photo, date of birth, allergens (structured list with severity), symptoms to watch for grouped mild vs severe, medication plan (antihistamine name and dose for mild; epinephrine auto-injector brand, dose, and location), step-by-step emergency instructions modelled on the FARE emergency care plan structure, emergency contacts in priority order, and paediatrician details.

From that single profile, generate four print-ready PDFs via React PDF: a wallet card (credit-card size, front/back, cut lines), a babysitter fridge sheet (A4/Letter, huge type, mild-vs-severe decision flow, where the auto-injector lives), a lunchbox label sheet (small allergen-icon stickers with the child's name), and a full emergency action plan for school files with a physician-signature line.

Every card carries a QR code linking to a live, mobile-formatted read-only page of the current plan at an unguessable URL, so a printed card from March still points at the September plan. Parents can disable the link.

Edits regenerate all four PDFs at once; that is the core promise.

Pages: Profile editor with live PDF previews, Downloads, live plan page, billing.

Pricing via Stripe: 12 dollars one-time per child, free preview with watermark. Multi-child discount at 20 dollars for the family.