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.
How many grams is 1 cup of flour? It's 120g
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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.
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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 Pinch — Kitchen Converter: 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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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: Lack of user reviews may deter new users.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited conversion options may not cover all user needs.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No offline access limits usability.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Subscription model may confuse users.
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
How many grams is 1 cup of flour? It's 120g. How about 1 cup of sugar? That's 200g. Every ingredient is different — and generic converters don't know that. Pinch is the kitchen converter that knows 1 cup of honey weighs almost 3x more than 1 cup of flour. Pick from 100 common ingredients, tap your amount, and see the answer instantly. No subscriptions. No ads. No account. Pay once, convert forever. INGREDIENT-AWARE CONVERSIONS Generic unit converters treat every ingredient the same. Pinch doesn't. Our database of 100 ingredients uses accurate density values sourced from King Arthur Baking, USDA, and Bob's Red Mill — the references professional bakers trust. EVERY UNIT A COOK NEEDS - Volume: cups, tablespoons, teaspoons, mL, liters, fluid ounces, pints, quarts - Weight: grams, kilograms, ounces, pounds - US, UK, and Australian measurements (yes, Australian tablespoons are different) - Butter sticks, eggs, and other cooking-specific units OVEN TEMPERATURES Fahrenheit, Celsius, and Gas Marks with a built-in reference chart. No more Googling "what is 180C in Fahrenheit" mid-bake. RECIPE SCALER Half batch? Double batch? Cooking for 3 instead of 8? Quick-scale buttons let you resize any recipe in one tap, then convert the result to any unit. FRACTIONS, NOT DECIMALS American cooks think in 1/4 cup, not 0.25 cup. Pinch shows results as fractions for volume measurements, with exact decimals available for precision bakers. QUICK REFERENCE CARDS Butter sticks to grams, egg measurements, volume equivalents, US vs UK vs Australian units — everything you look up over and over, always one tap away. WORKS OFFLINE, EVERYWHERE No internet required. No data collection. No account to create. Pinch works on your countertop with flour on your fingers, at the grocery store, or anywhere you cook. Built for home bakers and cooks who are tired of Googling "cups to grams" every single time.
Written user reviews are not shown here. Check current App Store reviews >
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.
From the Build Kit assessment.
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.