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
Chelsea Official App
The Chelsea Official App gives you All Access, All Chelsea - bringing fans closer to the
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
7,225 ratings · Top 15%
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 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 Chelsea Official App: map the core Sports 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 local caching for articles and fixtures.
Assumption to check: Limited offline access to content
Validate with people who use this workflow before building.
Hypothesis 2
Introduce an ad-free premium subscription.
Assumption to check: High frequency of ads
Validate with people who use this workflow before building.
Hypothesis 3
Optimize images and use lazy loading.
Assumption to check: Slow load times for images
Validate with people who use this workflow before building.
Hypothesis 4
Add user preferences for tailored news and fixtures.
Assumption to check: Lack of personalized content
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
The Chelsea Official App gives you All Access, All Chelsea - bringing fans closer to the Club through exclusive content, personalised feeds, live match updates and everything Chelsea, all in one place. Features we know you’ll love include: Personalised experience: Easily create your account to unlock a tailored app experience built around you. Follow your favourite players and choose exactly the news, video content and updates you want to see. Breaking News: Stay up to date with breaking news, including official interviews with the head coach and the players. Turn on push notifications to get updates before anyone else. Match Centre: Packed with live match updates for our Men’s, Women’s and Academy teams. Get team news, analysis and live audio commentary for every game in the Premier League, UEFA Champions League and beyond. Live Football: See the next generation in action with live streams from the Academy alongside selected men’s and women’s pre-season fixtures. Exclusive Content: Watch full match replays, post-match reaction, live press conferences and behind-the-scenes footage. Live Audio Commentary: Listen along live to all men’s first team matches with audio commentary. Games and Competitions: Put yourself in the shoes of our head coach and pick your weekly starting XI or enter Play Predictor for your chance to win big prizes every week. Digital Tickets: View, manage and scan your match tickets directly from your phone. Don't miss any of the action. Download the Chelsea Official App today. All Access, All Chelsea. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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
AsyncStorage
Shadcn/UI
BUILD KIT DIFFICULTY
Expert
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.
