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.
App Overview
Cake Wizard
Cake wizard helps to measure the quantity of ingredients for a cake depending on size and shape of baking pan
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 1.0
2 ratings · Below Average
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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included14 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
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.
Differentiate and validate
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Cake Wizard: 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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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
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
Focus on building robust features and ensuring a bug-free experience.
Assumption to check: Poor user ratings due to lack of features and bugs.
Validate with people who use this workflow before building.
Hypothesis 2
Expand recipe database and allow more customization for cakes.
Assumption to check: Limited recipe variety and customization options.
Validate with people who use this workflow before building.
Hypothesis 3
Implement a clearer navigation structure and enhance UI design.
Assumption to check: Confusing navigation and user interface.
Validate with people who use this workflow before building.
Hypothesis 4
Create an in-app feedback system and community forum.
Assumption to check: Inadequate customer support and community engagement.
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
Cake wizard helps to measure the quantity of ingredients for a cake depending on size and shape of baking pan. It is a quick and convenient App. With this App you can easily modify any existing recipe for any size and shape of baking pan. Simply select the cake shape from your recipe and specify its dimensions (diameter/ length/ width - the necessary configuration parameters are automatically set depending on the selected shape), fill in quantity of ingredients from existing recipe in the upper "Item weight" field. In the second block, select desired shape and size of your cake. Press the “Calculate” button and you will get the weight of ingredient for a new cake. Cakes could have round, rectangular or square shapes. Recalculation performs from one shape to another. The units of measurement for size and weight are the same - both in the recipe and your own cake.
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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BUILD KIT DIFFICULTY
Starter
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.
