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
San Francisco 49ers
Stay connected to the San Francisco 49ers all year long.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.4
1,314 ratings · Top 30%
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 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 San Francisco 49ers: 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 offline caching for news articles and schedules.
Assumption to check: Limited offline functionality
Validate with people who use this workflow before building.
Hypothesis 2
Implement customizable notifications for game updates and news.
Assumption to check: Inconsistent notifications
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the layout and prioritize key information for users.
Assumption to check: Cluttered UI with too much information
Validate with people who use this workflow before building.
Hypothesis 4
Optimize image loading and data fetching to improve speed.
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
Stay connected to the San Francisco 49ers all year long. The official San Francisco 49ers app brings the team closer than ever – whether you're at Levi’s® Stadium on gameday or cheering from anywhere in the world. Get breaking news, explore exclusive content, browse the roster and player stats, manage your tickets, and unlock a personalized fan experience built around you. With an entirely new navigation experience and powerful features, the app makes it easier than ever to follow the team, access gameday essentials, and connect with the global 49ers Faithful community, with support for both English and Spanish. Key Features • Personalized Fan Experience: Sign in with your NFL account to unlock a customized experience tailored to your fandom. Your Fan Profile tracks your engagement, milestones, favorites, and achievements as you interact with the team and the app. • Tickets & Gameday Access: Access and manage your tickets with secure Ticketmaster integration, making it easy to view and present your tickets for stadium entry. Browse upcoming games and find tickets for future matchups directly in the app. • Season Ticket Member Hub: Season Ticket Members can access a dedicated hub designed just for them, with member benefits, account information, renewal updates, and exclusive experiences all in one place. • Niners Network: Discover and connect with the 49ers Faithful community through Niners Network, where the Faithful can explore events, fan groups, and activities happening near them. • Media & Content: Stay up to date with the latest 49ers news and storytelling through videos, galleries, podcasts, and articles. Follow your favorite players and enjoy content curated around your interests. • Shop & Explore: Browse official 49ers merchandise through the in-app team store and discover additional experiences connected to Levi’s® Stadium and the 49ers community. Download the official San Francisco 49ers app today and experience the team like never before.
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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 Navigation
Zustand
Supabase
Axios
Expo
BUILD KIT DIFFICULTY
Advanced
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.
