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
Buffalo Bills Mobile
Welcome to the official mobile app of the Buffalo Bills, tailor-made for the most passionate and knowledgeable fanbase in the NFL
Free
PRICE
Free
No in-app purchases
BUSINESS MODEL
Free
No overall Grossing estimate available
RATING
★ 4.8
99,655 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.
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 included15 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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 Buffalo Bills Mobile: 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 real-time notifications for game scores and events.
Assumption to check: Limited live game updates
Validate with people who use this workflow before building.
Hypothesis 2
Simplify the navigation structure and enhance visual cues.
Assumption to check: Navigation can be confusing
Validate with people who use this workflow before building.
Hypothesis 3
Add options for sharing news and events on social media.
Assumption to check: Inadequate social sharing features
Validate with people who use this workflow before building.
Hypothesis 4
Optimize image loading and data fetching for faster access.
Assumption to check: Slow loading times for content
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
Welcome to the official mobile app of the Buffalo Bills, tailor-made for the most passionate and knowledgeable fanbase in the NFL. Stay locked in with exclusive team content all year long and make game day go smoothly with mobile ticketing. Plus, score live streaming video, breaking news, real-time statistics and drive updates, and on-demand highlights! Features include: Game day: Mobile ticketing News: Real-time breaking news, previews of upcoming matchups, postgame recaps, and player features Video: Live streaming video, on-demand highlights, feature stories, press conferences, coach and player interviews, and more Photos: Stunning HQ galleries from games and practices Audio: Official team podcasts and interviews Stats: Real-time statistics and scores from the official NFL stats engine, head-to-head matchup insights, player stats, drive updates, box scores, and league-wide stats Standings: Division and conference standings Depth chart: Up-to-date offense, defense, and special teams Schedule: Schedule of upcoming games, box scores from previous games, ticket purchases for future games For more Bills news and info, visit www.buffalobills.com For support: Tweet @yinzcam or email [email protected] The official mobile app of the Buffalo Bills is created and maintained by YinzCam, Inc., on behalf of the Buffalo Bills. Please note: This app features Nielsen's proprietary measurement software which contributes to market research, like Nielsen's TV Ratings. Please see About Nielsen Measurement for more information.
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
Supabase
react-native-reanimated
react-native-calendars
expo-router
BUILD KIT DIFFICULTY
Intermediate
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.
