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
Where's Mommy?
Where's Mommy? is a simple picture matching game for young children
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 Where's Mommy?: map the core Entertainment 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
Incorporate more interactive elements like quizzes or choices.
Assumption to check: Limited interactivity in stories
Validate with people who use this workflow before building.
Hypothesis 2
Allow user-generated stories to increase variety.
Assumption to check: Lack of diverse content
Validate with people who use this workflow before building.
Hypothesis 3
Implement offline storage for downloaded stories.
Assumption to check: No offline access
Validate with people who use this workflow before building.
Hypothesis 4
Add features for user feedback and ratings.
Assumption to check: Poor user engagement feedback
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
Where's Mommy? is a simple picture matching game for young children. You select pictures from your Photo Library that you want to use. Give each one a simple name, like "Mommy," or "Patches." When your child plays the game, one of those pictures will be selected and shown in a grid with some of the others. When each copy of the selected picture is tapped, confetti falls and a fun sound is played. The game repeats with a different picture selected. The game only uses pictures you choose. With a little imagination, you can use Where's Mommy? to teach little ones to recognize words that go with pictures, like flashcards. Or make up silly names for the pictures...you decide what to call them. It's a great game for sitting in the shopping cart, or any time when a few minutes of fun distraction are needed. BIG TIP: The tab bar is hidden while playing the game. To get back to the settings screen, either press and hold on the "Where is..." text on the main screen, or tap the little gear icon underneath the "There's..." text on the game won screen. It's in the instructions, but easy to miss.
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.
SUGGESTED BUILD STACK
React Native
Expo
Axios
@react-navigation/native
React Native Reanimated
Firebase
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.
