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
FotMob - Soccer Live Scores
Join over 20 million fans who trust FotMob to keep them informed.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
172,355 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 included18 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 FotMob - Soccer Live Scores: 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
Optimize data fetching and caching for faster real-time updates.
Assumption to check: App can be slow to update live scores during high traffic events
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to set custom notifications for specific teams and matches.
Assumption to check: Limited customization options for notifications
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the UI and prioritize key information for better user experience.
Assumption to check: User interface can feel cluttered with too many options
Validate with people who use this workflow before building.
Hypothesis 4
Implement better search and filter options for easier navigation.
Assumption to check: Difficulty in finding specific match details
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
Join over 20 million fans who trust FotMob to keep them informed. FotMob gives you all the live scores, stats, and news you need to keep up with football from anywhere in the world. With personalized alerts and lightning fast match updates, you'll always stay informed about your favorite teams and players. Our mission is simple: We're changing the way the world follows football. Key features include: • Live scores with instant goal notifications • Personalized news and alerts for your favorite clubs and players • Home screen widgets with news and live matches • Detailed match stats, including xG and shot maps • Video highlights and audio commentary • Live text commentary to follow the action as it happens • Transfer updates and breaking news • TV schedules so you know exactly when and where to watch • Weekly Team of the Week (TOTW) and player ratings We cover more than 400 competitions globally, including Liga MX, Premier League, La Liga, Bundesliga, Serie A, Ligue 1, MLS, Champions League, FA Women’s Super League, Eredivisie, World Cup 2026, and many more. Stay connected and share your feedback we'd love to hear from you: X: X.com/fotmob Instagram: instagram.com/fotmobapp Facebook: facebook.com/fotmob TikTok: tiktok.com/@fotmobapp Web: www.fotmob.com Team names and logos in this app are used solely for identification purposes. Neither the EPL nor any EPL club endorses or is associated with this application. By using this app, you agree to Apple’s standard End User License Agreement (EULA): 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
zustand
react-navigation
expo-constants
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.
