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
JD Sports: Exclusive rewards
Shop shoes, buy sneakers and get the latest streetwear fashion with the JD Sports app
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
59,012 ratings · Top 5%
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included17 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 JD Sports: Exclusive rewards: map the core Shopping 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
Implement more advanced filtering and sorting features.
Assumption to check: Limited product filtering options
Validate with people who use this workflow before building.
Hypothesis 2
Optimize image loading and caching.
Assumption to check: Slow loading times for images
Validate with people who use this workflow before building.
Hypothesis 3
Improve stability and performance on lower-end devices.
Assumption to check: Occasional crashes on older devices
Validate with people who use this workflow before building.
Hypothesis 4
Simplify navigation and declutter the UI for better user experience.
Assumption to check: User interface can be cluttered
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
Shop shoes, buy sneakers and get the latest streetwear fashion with the JD Sports app. Get exclusive rewards, deals, offers and updates on when the newest releases are dropping so your wardrobe stays stocked with the freshest fashion. Whether you’re shopping online for casual wear, workout or athletic clothing, we’ve got you covered with stylish fashion to fit your unique style. Shop basketball sneakers or running shoes, mens, womens and kids sports casual wear - you’ll find it all on the app. Shopping clothing, shoes & sneakers with JD Sports should be simple. So we’ve made it that way. Always be in the know with the JD Sports mobile app. View your STATUS account and find out every release drop from your favorite brand. Plus, shop sneakers and clothing easily within the app, so it can be yours in seconds. What you’ll get with our JD Sports app: Shopping: See what clothing is trending online and shop the hottest styles from Nike, adidas, Jordan, Yeezy and more. Keep it casual, express yourself in athletic fashion, or show off streetwear to impress - we’ve got style for everyone. Easy Checkout: Save your payment & shipping info in the app to speed through checkout every time. Grab those online deals quickly and buy without fuss. Use Apple Pay or After Pay - whatever works for you. New Releases: Keep tabs on fresh drops so you can buy basketball shoes, running shoes, casual sneakers & more in both mens and womens from the hottest brands. Boost your STATUS for exclusive access to events both in-store and digital. No more reservations or waiting in lines. Favorites: Mark products as "favorites" as you browse so you can easily find them again. Alerts: Enable push notifications to stay on top of new releases and exclusive rewards, offers & deals. Download the JD Sports mobile app now for fresh, elite style and exclusive releases & exclusive rewards.
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
Supabase
Zustand
React Navigation
React Native Reanimated
BUILD KIT DIFFICULTY
Advanced
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.
