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.
A recipe calculator for every *cuisine*!
$2.99 · In-app purchases
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 Qzeen - Recipe Calculator: 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: Poor user reviews indicate functionality issues and bugs
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited recipe database
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: In-app purchase for full features
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Difficult navigation reported by 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.
A recipe calculator for every *cuisine*! Qzeen (pronounced CUE-zeen) allows you to build recipes ingredient by ingredient from a database of tens of thousands of foods. Set ingredient and portion sizing... and you're done! Instant nutrition data! A recipe is built ingredient by ingredient. Search the database of over 100,000 ingredients of various sizing options (i.e., cup, oz, tsp, tbsp). Choose the one that is right for your recipe. For special foods that are not in the database, you can enter your own custom ingredients right from the product packaging's nutrition label. These custom ingredients will function just like any other and can be used in any of your recipes. Nutrition data comes in both raw data (grams and milligrams) as well as percent daily value (PDV). Experience more than just calories: get over a dozen of the standard nutrients with each ingredient and every recipe. Standard nutrients include: Calories, Carbohydrates, Protein, Fat, Cholesterol, Sodium, Fiber, Total Sugars, Added Sugars, Vitamin A, Vitamin C, Vitamin D, Calcium, Iron, and Potassium. For a more involved experience, Qzeen offers upgrades via In-App Purchases that can make your recipe nutrition calculation experience more robust. - More Custom Ingredients: expand your ingredient library - Additional Nutrients: more nutrition data beyond what is standard - Favorite Recipes: make finding common recipes and recipe ingredients easier in a large library - Prep Time and Instructions: list step-by-step how-to's with total prep time While the vast majority of Qzeen's ingredients contain multiple portion sizes, your recipe may call for something different, and you may have forgotten what we were all supposed to have learned in elementary school. So how many teaspoons are in a tablespoon? And how exactly do I convert pounds to grams? The Conversion Calculator add-on gives you a simple way to make these measurement changes right when you need them: during the recipe-building process. Available both when adding ingredients and when sizing the final recipe, the Conversion Calculator allows you to convert dry weights (oz, lb, g) and liquid volumes (fl oz, mL, L, cup, tbsp, tsp, gal, qt, pt) all at once. That special sauce or your family's homestyle dressing are perfect examples of recipes you may want to use in other recipes. With the Recipes as Ingredients add-on, develop the recipe for a sauce or dressing or generic prep once, and then reuse it in multiple recipes when the time comes. When adding a recipe as an ingredient, you see the same list of recipes that are presented on the Recipes tab. You can then review nutrition and set sizing before adding the recipe as an ingredient. Qzeen makes recipe and nutrition calculation quick and easy.
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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.