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
B1G+: Watch College Sports
Watch nearly 3,000 live events across the Big Ten with B1G+.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 1.4
106 ratings · Below Average
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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 B1G+: Watch College Sports: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Watch nearly 3,000 live events across the Big Ten with B1G+. Stream live games, next-day replays, and original Big Ten Network content. Whether you're following volleyball, basketball, wrestling, softball, or baseball, B1G+ brings you closer to the teams and matchups you care about most. *** Note: Live football games and other nationally televised events are not available on B1G+. *** WHAT YOU GET WITH B1G+. Nearly 3,000 live events every year. Watch Big Ten sports live, including hundreds of games across 20+ sports. NEXT-DAY ON-DEMAND REPLAYS. Watch full-length commercial free and condensed game replays of televised games from Big Ten Conference TV partners. ORIGINAL PROGRAMMING & CLASSIC GAMES. Binge your favorite Big Ten Network originals like The Journey, The B1G Story, and B1G Moment. Relive historic rivalries, buzzer-beaters, and championships. MULTIVIEW. Watch up to four events at once so you never miss a moment on busy game days. (Available on web, Fire TV, Apple TV.) SHOW YOUR FANDOM. Personalize your home screen icon of the B1G+ app with Big Ten branded colors to represent your favorite school. Subscribe directly to B1G+. Subscription Options: Monthly Pass $12.99 Annual Pass $89.99 — Save over 40% vs. purchasing a Monthly Pass Available in the U.S. and Canada only. No TV provider required. Follow Your Team: Illinois Indiana Iowa Maryland Michigan Michigan State Minnesota Nebraska Northwestern Ohio State Oregon Penn State Purdue Rutgers UCLA USC Washington Wisconsin Privacy Policy: http://btn.com/about/btn-privacy-policy Terms of Use: http://btn.com/about/btn-terms-of-use
Written user reviews are not shown here. Check current App Store reviews >
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 smoother transitions and a cleaner tab bar design.
Assumption to check: Poor user experience with navigation
Validate with people who use this workflow before building.
Hypothesis 2
Enhance video buffering and error handling.
Assumption to check: Frequent crashes during live streaming
Validate with people who use this workflow before building.
Hypothesis 3
Expand the range of available games and on-demand videos.
Assumption to check: Limited content availability
Validate with people who use this workflow before building.
Hypothesis 4
Optimize layout and implement ad management to minimize disruption.
Assumption to check: Cluttered interface with too many ads
Validate with people who use this workflow before building.
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
Zustand
axios
react-navigation
expo-av
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.
