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
League Dominator
Pick your fantasy football lineups with our next-level projections, algorithms and analysis with the Footballguys League Dominator
Free
PRICE
Free
No in-app purchases
BUSINESS MODEL
Free
No overall Grossing estimate available
RATING
★ 4.7
2,966 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.
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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 League Dominator: 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
Competitive pricing with generous free tier
Assumption to check: Expensive subscription
Validate with people who use this workflow before building.
Hypothesis 2
Focus on most-requested features first
Assumption to check: Missing features
Validate with people who use this workflow before building.
Hypothesis 3
Optimize for 60fps, fast load times
Assumption to check: Poor performance
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
Pick your fantasy football lineups with our next-level projections, algorithms and analysis with the Footballguys League Dominator. Save time and win more - get all the information you need to dominate your fantasy football league. ► The most powerful & hi-tech app available for Fantasy Football Lineups from the guys who revolutionized drafting with the Draft Dominator: • Import your rosters from your league host (all major fantasy football providers supported) • Customize to your fantasy football league settings • Understands true probability of a player’s likely outcomes, not just a single points projection or worse still a weekly ranking! • Set the lineup that gives you the best chance to WIN not the most predicted points • An insane amount of detail week to week: see weather forecasts, players scheduled to play under a dome, injuries, strength of schedule, matchup previews and more • Quick updates to breaking news: Sunday inactives zeroed as news breaks, daily injury alerts and reaction to injury reports and practice participation, projection adjustments according to WR vs defensive back matchups, and much more • View a player’s performance in the year to date, with our statistical analysis and textual game recaps. Know the difference between a player who got lucky and a player who will continue to score • Works for every future week of the season - look into the future for the rest of the year to see which players will help you the most going forward • Waiver wire, free agents and trades: make the smart transactions that build your roster. ► Why is it better than the competition? Only the Fantasy Football League Dominator supports… • Utilizes the cloud to save settings between your different devices • Comprehensive Depth Charts • Multiple news feeds and our reactions • Ability to customize using 4 different offensive and 2 different IDP projection sets • Choose high upside plays for your flex spot • 4 sets of weekly projections PLUS upside rankings • Optimizes for your best chance to win against your opponent - knows when you should play it safe and when you should take risks ► Supports very advanced fantasy football league settings including: • PPR • All offensive positions (QB, RB, WR, TE, WR+TE combined, RB/WR flex, RB/WR/TE flex, QB/RB/WR/TE flex, PK) • IDP (DL, LB, DB, DE, DT, OLB, ILB, CB, S, any IDP) • Keepers • Returners • TD only • Multi-flex leagues • Highly advanced scoring: distance scoring for touchdowns, yardage bonuses, ability to enter fully customizable scoring rules • Scoring can be defined differently by position (ie TEs = 1.5 PPR, while RBs = 1 PPR) ► About Footballguys: Every site claims self appointed "gurus" or "experts". That's nice. Footballguys claims a proven track record of customers dominating their leagues. Whether it's the high stakes contests like FFPC or NFFC, national contests from ESPN or local leagues around the world, Footballguys customers dominate their leagues. With a paid staff of 60+ hardcore Football writers and news hounds under contract, we'll put our Staff up against anyone's. ► DOMINATE your league now with the League Dominator! Terms of use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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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
RevenueCat
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.
