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.
Gumbo Calculator - make perfect gumbo every time, for any size crowd!
$4.99 · 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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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 Gumbo 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: Limited user customization for recipes
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No sharing options
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of user feedback mechanism
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No dietary filters
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.
Gumbo Calculator - make perfect gumbo every time, for any size crowd! With this app you can make authentic Cajun gumbo with total confidence - whether you are a pro with a gumbo pot or trying your first batch, let Gumbo Calculator do all the heavy lifting for you! Have you ever tried making gumbo for a larger crowd and you're not sure how much to make or what size pot to use? Gumbo Calculator will give you the perfect amount to make and let you know exactly what size pot you'll need. Have you ever burned a roux, had a roux come out lighter than you would have liked, or felt like there must be an easier way? Gumbo Calculator has so many ways to make roux you won't even believe it - from fast but challenging methods to absolutely dead simple ways that will make your gumbo a success. Are you looking to improve your gumbo with better notes on your batches and tracking of what you are doing differently? Gumbo Calculator offers a detailed logbook where you can easily record and track your batches so you can iterate and hone your gumbo skills. Or are you new to attempting gumbo but not sure where to start? Let the wisdom and practical advice of gumbo masters help you do it right! Key Features: - Gumbo Calculator offers two different ways to calculate your gumbo yield - by pot size or by number of servings - Gumbo Calculator scales perfectly to tell you the exact ingredient quanitites needed - Gumbo Calculator will even tell you exactly how much rice you should make to accompany your batch - Included base recipe for Chicken and Sausage Gumbo, a time tested recipe that is a true crowd pleaser - Easy export of shopping list to Notes, Messages, or Reminders - Learn how to make roux that comes out perfect every time - six different ways! - Detailed log book and configuration save features lets you track your batches over time - Tips and Tricks from Louisiana gumbo masters No internet required - all calculations work offline. This app doesn't have ads and never will. Make the authentic Louisiana gumbo you deserve with the most trusted calculator in the south!
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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.