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
38-0
Build your ultimate Premier League XI and see whether they can achieve the impossible: a perfect 38–0 season.
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
3 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 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 38-0: 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
Allow users to create custom activity types and set their metrics.
Assumption to check: Limited customization options for activities
Validate with people who use this workflow before building.
Hypothesis 2
Provide more in-depth statistics and trends over time.
Assumption to check: Analytics may not be detailed enough
Validate with people who use this workflow before building.
Hypothesis 3
Implement guided onboarding to help users set up their profile and activities.
Assumption to check: User onboarding can be confusing
Validate with people who use this workflow before building.
Hypothesis 4
Add more valuable features for premium users, such as advanced analytics or personalized coaching.
Assumption to check: Premium features are not compelling enough
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
Build your ultimate Premier League XI and see whether they can achieve the impossible: a perfect 38–0 season. Spin for a random club and season, explore the available squad, and select the best player for each position. Combine players from different teams and eras to create a one-of-a-kind starting eleven before putting them through a complete 38-match league simulation. Every choice matters. Balance star attackers, creative midfielders, dependable defenders and a strong goalkeeper to maximise your chances of winning the title. Features: • Draft players from Premier League seasons spanning multiple eras • Build a complete XI in a 4–3–3 formation • Use rerolls to search for a better squad • View player positions, nationalities and ratings • Receive projected points, finishing position and title odds • Simulate all 38 matches with goals, assists and match results • Track wins, draws, losses, goals and clean sheets • Earn end-of-season awards, including the Golden Boot and Playmaker award • Review the final league table and your complete season statistics • Save your best score and challenge yourself with a new run Can your carefully drafted squad dominate the league, or will one weak position cost you the title? Spin. Draft. Simulate. Chase 38–0.
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
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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.
