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
BetMGM - Sportsbook & Casino
Place Real Money Bets with BetMGM — Your trusted sportsbook for all major professional, college, and international sports for your chance to win
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
260,876 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 BetMGM - Sportsbook & Casino: 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
Expand betting options to include niche sports.
Assumption to check: Limited betting options for less popular sports
Validate with people who use this workflow before building.
Hypothesis 2
Implement a live chat feature for immediate support.
Assumption to check: Slow customer support response times
Validate with people who use this workflow before building.
Hypothesis 3
Simplify navigation with clearer labels and onboarding tutorials.
Assumption to check: Complex navigation for new users
Validate with people who use this workflow before building.
Hypothesis 4
Optimize app performance to handle increased user load.
Assumption to check: Frequent app crashes during high traffic
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
Place Real Money Bets with BetMGM — Your trusted sportsbook for all major professional, college, and international sports for your chance to win. Download the app today for FREE to take advantage of our exclusive offers like our sign up bonus. Get in on all the action, whether it is live bets, same game parlays, player props, futures, and alternate lines – we’ve got it all. BetMGM is now officially LIVE and accepts bets in Arizona, Colorado, District of Columbia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Massachusetts, Michigan, Mississippi, Missouri, Nevada, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Puerto Rico, Tennessee, Virginia, West Virginia, and Wyoming. WHY JOIN MILLIONS OF BETMGM SPORTSBOOK USERS? • Trusted Online sports betting for professional, college, and international sports • 24/7 sports betting services - bet anytime, anywhere • Leverage Exclusive Offers • Enjoy our introductory promo • Extensive betting options to fit all strategies • Lightning Fast, Secure Transactions • Hassle Free, Easy Payouts How to play and place your bets is quick and easy: 1. Download the app and create a free account 2. Find your bet and desired outcome 3. Place the bet and let the action unfold CLAIM OUR EXCLUSIVE WELCOME OFFERS FOUND NOWHERE ELSE Utilize our exclusive offers: Get up to $1500 paid back in bonus bets if your first bet doesn't win or refer a friend and both of you get $100 each. YOUR HOME FOR SPORTS BETTING - PLACE YOUR BETS ON: • NFL Football, MLB Baseball, MLS Soccer, NBA Basketball, and NHL Hockey. • NCAA Football, Basketball and more. • MMA, UFC, and Boxing bets. • Cricket, UEFA Soccer, English Premier League, AFL and more. • Lacrosse, Handball, Darts, and Badminton. • WNBA, Cycling, Formula1, NASCAR, and Rugby. • Tennis tournaments: ATP, WTA. • Golf tournaments: PGA, Masters. Broad spectrum of bets: From Spread bets, Moneyline bets, Totals (Over/Under), to Live in-game Betting, Same Game Parlays, Parlays, Teasers, Futures, Game props, Player props, Round robin, and Alternate lines - we've got it all. Manage your bets with ease: Access your bets effortlessly with our bet slip feature and mix spreads and total selections from football and basketball events for bigger thrills with teaser bets. Flex your betting strategy with Cash Out: Exercise control over your wins using our cash out feature for early payouts. Enjoy the Rewards: Earn BetMGM rewards points through wagering and redeem them for bonus bets, digital bonuses, and experiential rewards at qualifying MGM resorts. Unmatched Convenience: Enjoy quick deposits and withdrawals along with the freedom to place wagers anytime, anywhere with our 24/7 betting access. Embrace the excitement of sports betting! Download the BetMGM sports betting app today! If you or someone you know has a gambling problem, call 1-800-GAMBLER. Must be 21+. Additional terms and conditions apply. Visit BetMGM.com for the full list of terms and conditions.
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
TypeScript
Redux
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.
