Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
Traveling with a food allergy means trusting a stranger, in a language you don't speak, with something that can send you to hospital.
$0.99
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
Your first Build Kit is free with a verified email.
Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Mayday: Food Allergy Card: map the core Food & Drink workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Traveling with a food allergy means trusting a stranger, in a language you don't speak, with something that can send you to hospital. Mayday makes that moment simple. Pick your allergens, choose the local language, and show a clear, translated card to the waiter. No internet. No gestures. No guessing. HOW IT WORKS 1. Select your allergens — 37 to choose from, across 6 categories 2. Pick the language of the country you are in — 38 available 3. Tap a card to open it full screen, at maximum brightness, ready to hand over WHAT'S INSIDE • 37 allergens: peanuts, tree nuts, almonds, cashews, sesame, shellfish, fish, shrimp, milk, egg, lactose, gluten, wheat, soy, celery, mustard, sulfites, and more • 38 languages across Europe, Asia, the Middle East and Africa — from Japanese and Arabic to Thai, Finnish and Swahili • Every card is a complete sentence written for restaurant staff, not a word-for-word allergen list • High contrast and readable at arm's length, in a dim and noisy dining room BUILT FOR TRAVEL • 100% offline — works in airplane mode, on a train, in a village with no signal • No account, no sign-up, no tracking. Your allergies never leave your device • Nothing to set up before you fly: choose once, and your card is ready WHO IT IS FOR Celiacs in Tokyo. Nut allergies in Bangkok. Lactose intolerance in Istanbul. Anyone who has ever pointed at a menu and hoped for the best. If a phrase does not read right in your language, write to us and we will correct it quickly. Mayday is not a medical device and does not replace medical advice. Always carry your prescribed medication.
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These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Assumption to check: High delivery fees
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Inaccurate ETAs
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited restaurant selection
Validate with people who use this workflow before building.
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
Not assessed in a Build Kit yet.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.