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
DraftKings Predictions
Make picks on sports and real-world events with DraftKings Predictions — all in one simple, intuitive app
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
10,897 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's included15 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 DraftKings Predictions: 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
Add social sharing options to enhance engagement.
Assumption to check: Limited social features for sharing predictions
Validate with people who use this workflow before building.
Hypothesis 2
Streamline UI to focus on key actions.
Assumption to check: User interface clutter with many options
Validate with people who use this workflow before building.
Hypothesis 3
Implement customizable notification settings.
Assumption to check: Inconsistent notifications
Validate with people who use this workflow before building.
Hypothesis 4
Add onboarding tutorials to guide new users.
Assumption to check: Lack of tutorials for new users
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
Make picks on sports and real-world events with DraftKings Predictions — all in one simple, intuitive app. From game results and player milestones to headline moments beyond sports. Built for sports fans and anyone who loves staying ahead of the conversation, DraftKings Predictions makes it easy to engage with the events you already follow. Key Features: • Sports Focus: Make picks across a wide range of sports, including football, basketball, hockey, baseball and more! • Additional Markets: Predict outcomes on pop culture moments, crypto, commodities and other events • Track Picks Live: Follow along as events unfold, make in-game picks and see outcomes settle once results are official. • Designed for DraftKings Fans: Fast, intuitive, and familiar — built with the same fan-first approach you expect from DraftKings. • Licensed & Regulated Platform: Participate on a federally regulated platform. How to Get Started: 1. Download the DraftKings Predictions app: Begin your journey with one simple install. 2. Login or Sign Up: Use your existing DraftKings account or create a new one. 3. Browse Opportunities & Make your picks: select the ones that resonate with you, and start with just a few taps. Make your call If you watch the games, follow the headlines, and already have strong opinions, DraftKings Predictions gives you a place to act on them. Whether it’s a big matchup, a breakout performance, or a moment everyone’s debating, your take matters. Download DraftKings Predictions and start making your picks today. - Who can use DraftKings Predictions? Must be a U.S. resident and physically located in an eligible jurisdiction within the United States or a U.S. territory. Market availability varies. Eligibility restrictions apply. For a current list of eligible jurisdictions, see predictions.draftkings.com/how-to-trade-predict. GUS III LLC d/b/a DraftKings Predictions is a CFTC-registered Introducing Broker and NFA member. Trading involves substantial risk of loss and is not suitable for everyone. Market availability varies and is subject to change. DraftKings Predictions may introduce new markets over time. Promotion eligibility, deposit, and trading restrictions may apply. Must meet age and eligibility requirements to participate in promotions. Bonus rewards are issued in site credits and are subject to trading and expiration restrictions. Promotion availability may vary by jurisdiction. Pricing used for illustrative purposes only.
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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
Zustand
React Navigation
React Native Reanimated
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.
