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
MLS: The Official App
Stay in the game with instant, personalized news, scores, schedules and match highlights, powered by AI in the official MLS Soccer app.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.5
10,674 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 MLS: The 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 offline caching for scores and news.
Assumption to check: Limited offline functionality
Validate with people who use this workflow before building.
Hypothesis 2
Simplify layout and improve organization of content.
Assumption to check: User interface can be cluttered
Validate with people who use this workflow before building.
Hypothesis 3
Enhance notification settings for user customization.
Assumption to check: Inconsistent notifications
Validate with people who use this workflow before building.
Hypothesis 4
Provide clear information on subscription benefits and features.
Assumption to check: Subscription not clearly communicated
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
Stay in the game with instant, personalized news, scores, schedules and match highlights, powered by AI in the official MLS Soccer app. INSTANT AND COMPREHENSIVE COVERAGE • Get the fastest access to breaking news, top stories and expert analysis from North America's best soccer analysts on everything MLS • Follow live scores and real-time play-by-play commentary to keep up with every minute of every match • Watch high-quality match highlights during and post-match to bring you closer to the game day energy, no matter where or when you watch • Latest match schedules for every MLS club and player across dozens of competitions – MLS Regular Season, MLS Cup, World Cup Qualifying, CONCACAF Champions Cup, U.S. Open Cup, Canadian Championship, Leagues Cup, Campeones Cup, FIFA World Cup, FIFA Club World Cup and more A PERSONALIZED EXPERIENCE, MADE FOR YOU • Follow the clubs, players, and competitions you love, and enjoy a personalized, AI-powered experience with the latest news, videos, and top stories tailored just for you • Customize your notification and alert preferences to stay updated on every key moment across the players, clubs, matches and competitions that matter most to you • Stay close to the action through Live Activities, bringing you real-time match updates right on your lock screen – without needing to open the app MODERN FEATURES FOR EVERY FAN • Learn more about your favorite clubs and players through detailed profiles that include advanced stats, videos and real-time insights • Bring the game to life wherever you are by keeping up with matches through scoreboards, stats visualizations, lineups, live commentary, videos, match previews, live scores and more • Easily buy and manage your tickets for every match directly in the app • Play MLS Fantasy and MLS Pick’em every week for free to have a stake in the game and win prizes
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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
Zustand
Axios
React Navigation
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.
