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
Learn Colours Flashcards
*Includes Red, Orange, Yellow, Green, Blue, Purple, Pink, Brown, Grey, White and Black.
$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 Learn Colours Flashcards: map the core Education 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
Add gamification elements like quizzes or achievements.
Assumption to check: Limited interactivity with flashcards
Validate with people who use this workflow before building.
Hypothesis 2
Implement spaced repetition or personalized learning paths.
Assumption to check: Lack of customization for learning pace
Validate with people who use this workflow before building.
Hypothesis 3
Enable offline downloads of flashcards.
Assumption to check: No offline access to flashcards
Validate with people who use this workflow before building.
Hypothesis 4
Add detailed progress tracking and achievements.
Assumption to check: Limited feedback on learning progress
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
*Includes Red, Orange, Yellow, Green, Blue, Purple, Pink, Brown, Grey, White and Black. Give your child the best start in life by teaching them how to say and recognise their Colours with this simple and easy to use Colours Flashcards App! It includes all of the primary colours and more so you can help your child to learn their colours no matter where they might be... at home, in the car or at grandma's house! Parents/Guardians... simply sit with your child on a sofa, floor or highchair and go through all the colours in the app with them for 3 minutes a day. Repeat by either by swiping or tapping through either side of the screen. Simple as that! The App is also very quick to launch (as we all know how fussy kids are when they're kept waiting!) and goes straight to what's important... the Colours! Not only is the app cheaper than buying physical flashcards, you're also reducing paper waste. Moreover, this App has no Ads! I've designed this App with my own child in mind, hope you enjoy it as much as we have using it! Thank you for downloading and supporting.
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
react-navigation
Zustand
expo-linear-gradient
react-native-gesture-handler
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.
