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
Caesars Sportsbook & Casino
FOOTBALL IS BACK
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
111,233 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 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 Caesars 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
Provide clear step-by-step guidance when placing bets.
Assumption to check: Users often face confusion with the betting process.
Validate with people who use this workflow before building.
Hypothesis 2
Expand the variety of sports and events available for betting.
Assumption to check: Limited sports and events compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 3
Optimize performance and reduce load times.
Assumption to check: Slow loading times during peak usage.
Validate with people who use this workflow before building.
Hypothesis 4
Ensure a consistent design and experience across all platforms.
Assumption to check: Inconsistent user interface across different devices.
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
FOOTBALL IS BACK. BET EVERY SNAP. Football is back at Caesars Sportsbook. Bet spreads, moneylines, totals, touchdowns, player props, futures and Same Game Parlays. Follow every drive with live odds, instant scores and more ways to get closer to the action. FLEX YOUR PARLAY. STAY IN THE ACTION. Apply Flex Your Parlay to an eligible wager and keep a chance to win even when one leg misses. Build parlays faster with enhanced prop views across your favorite matchups. TRY BET RESET Apply a Bet Reset token to a qualifying wager. If it loses, automatically receive a Bonus Bet equal to your wager, up to the maximum refund amount. Terms and eligibility requirements apply. REWARDS BEYOND GAME DAY Every eligible wager helps you earn Caesars Rewards® Credits redeemable for Bonus Bets, hotel stays, dining, shopping, live entertainment and unforgettable experiences. MORE ACTION ACROSS EVERY MAJOR SPORT Football may be back, but the action never stops. Bet on: - NFL and college football - MLB - NBA and WNBA - NHL - Soccer - UFC and boxing - Tennis and golf - F1, NASCAR and horse racing LIVE BETTING AND LIVE SCORES Follow the action with instant scores, live data, in-game tracking and odds that change as the game unfolds. FAST, SECURE AND EASY TO USE Enjoy Watch & Bet on select matchups, fast deposits, trusted withdrawals, personalized promotions and real-time odds alerts. CASINO GAMES WHERE AVAILABLE In NJ, PA, MI and WV, enjoy slots, live dealer games, blackjack, roulette and more. LEGAL STATES/JURISDICTIONS & RESPONSIBLE GAMBLING MESSAGE (includes licensing disclosures, where required): Must be 21+ and physically present in AZ, CO, IL, IN, IA, KS, KY, LA, ME, MD, MA, MI, MO, NV, NJ, NY, NC, OH, PA, TN, VA, WV, WY, Washington, DC or Puerto Rico. Know When To Stop Before You Start®. Gambling Problem? CO, IL, KY, MD, MI, MO, NJ, OH, TN, VA, WV, WY, KS (Affiliated with Kansas Crossing Casino), LA (Licensed through Horseshoe Bossier City and Caesars New Orleans), ME (Licensed through the Mi'kmaq Nation, Penobscot Nation, and Houlton Band of Maliseet Indians, federally recognized tribes located in the State of Maine), NC (Licensed through Tribal Casino Gaming Enterprise), PA (Affiliated with Harrah's Philadelphia): If you or someone you know has a gambling problem, crisis counseling and referral services can be accessed by calling 1-800-GAMBLER (1-800-426-2537) or MD: Visit mdgamblinghelp.org or WV: Visit 1800gambler.net; AZ: Call 1-800-NEXT-STEP; IN: Call 1-800-9-WITH-IT; IA: Call 1-800-BETSOFF; MA: Call 1-800-327-5050 or visit gamblinghelplinema.org; NV and Washington, D.C. (OLG Class A licensed Operator): Call 1-800-522-4700; NY: Call 877-8-HOPENY or text HOPENY (467369); Puerto Rico: Call 1-800-981-0023; llame a la línea PAS de ASSMCA 1-800-981-0023. ©2026, Caesars Entertainment
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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
Supabase
React Navigation
Axios
React Native Paper
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.
