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
DK Horse Racing & Betting
Legally bet on hundreds of horse race tracks - worldwide!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
7,908 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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included16 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 DK Horse Racing & Betting: 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
Offer more diverse betting types and events.
Assumption to check: Limited betting options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Optimize app performance and loading speed.
Assumption to check: Inconsistent performance and loading times
Validate with people who use this workflow before building.
Hypothesis 3
Create onboarding tutorials and tooltips.
Assumption to check: Lack of user-friendly tutorials for new users
Validate with people who use this workflow before building.
Hypothesis 4
Implement in-app chat support for quicker assistance.
Assumption to check: Difficulties with customer support responsiveness
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
Legally bet on hundreds of horse race tracks - worldwide! Betting on horses online has never been easier or more fun. Whether you're a seasoned punter or trying your hand at horse racing betting for the first time, DK Horse makes the experience effortless and exhilarating. Add to the thrill by placing a wager on your picks, and cheer them on to victory! Saddle up and wager at racing at hundreds of tracks from all around the world, including America's biggest racing events. Bet on the Kentucky Derby, Preakness Stakes, Belmont Stakes (the Triple Crown), the Breeders Cup, and more! Stream live horse races, and watch instant racing replays. Grab the reins, hold on tight, and pick your bets with DK Horse. Getting started and placing your first bet is quick and easy: 1. Download the app & create a free account 2. Pick a race, analyze real-time odds, and place your first bet 3. Watch and Wager – any race you bet on, you can watch live! The DK Horse racing & betting app is 100% FREE to download, offering an unparalleled gateway to wager on races from hundreds of tracks worldwide. Explore our features: - Live Racing Access: Stream horse races live as they happen. Immerse yourself in the thrill of the race from anywhere! - Real-Time Live Odds: Stay informed with up-to-the-minute odds for win, ensuring you have all the data you need to make smart betting decisions. - Instant Replays: Missed a race? Watch instant replays at your convenience to catch up on all the action you missed. - Easy Start: Quick setup and user-friendly interface make placing your first bet a breeze, whether you’re a seasoned bettor or new to the game. Download the DK Horse app now if you love horse racing betting online & want to bring the experience of the racetrack to the palm of your hand! DK Horse is available ONLY to residents of AZ, CA, CO, FL, IL, IN, IA, KY, LA, ME, MD, MA, MN, MT, NY, OH, OR, PA, VA, WA, WV, and WY. This is a real-money gambling app. Please gamble responsibly and only bet what you can afford. For gambling addiction help and support, please call 1-800-GAMBLER / 1-800-522-4700, or visit https://www.ncpgambling.org. 18+ (21+ in certain states) to open/access an account and resident of a state where DK Horse is available. Eligibility restrictions apply. Void where prohibited. See terms at dkhorse.com. To learn about current promotions and associated terms, see dkhorse.com Privacy Policy: https://www.dkhorse.com/privacy-policy
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.
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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.
