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
Parity Pro
Parity Pro generates fully randomized, balanced schedules for head-to-head fantasy leagues.
$14.99 · In-app purchases
PRICE
$14.99
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 Parity Pro: 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 personalize their dashboard and choose preferred stats.
Assumption to check: Lack of user customization options
Validate with people who use this workflow before building.
Hypothesis 2
Expand to cover more sports and leagues.
Assumption to check: Limited sports coverage
Validate with people who use this workflow before building.
Hypothesis 3
Introduce a freemium model with more accessible features.
Assumption to check: High price point for casual users
Validate with people who use this workflow before building.
Hypothesis 4
Integrate share functionality for users to share stats and achievements.
Assumption to check: No social sharing features
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
Parity Pro generates fully randomized, balanced schedules for head-to-head fantasy leagues. Create fairer, more competitive seasons in seconds. Works with any head-to-head fantasy format. Key Features Save up to 10 leagues Generate unlimited schedules Set your league once, reuse every season Customize divisional windows and rivalry weeks Optional repeat matchups with smart spacing Supports odd divisions and bye weeks Assign exact calendar dates with flexible week mapping Share full league schedules or individual team schedules Batch export all team schedules at once Auto-save league settings as you build Export and import leagues for seamless device switching Recommended Workflow Generate your schedule in Parity Pro, then paste it into your league manager or message board as a reference while entering matchups. Data and Storage All league data is stored locally on your device. Deleting the app will remove saved leagues. To prevent data loss, use Export All and save to iCloud. You can restore everything anytime using Import. Why Parity Pro? Default league schedules are stale and unbalanced. Parity Pro gives you: More fairness More randomness More unpredictability Better seasons
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
Zustand
Supabase
React Navigation
TypeScript
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.
