App Overview

PAR-LAY icon

PAR-LAY

Thomas Dee · Sports

PAR-LAY is a tracker for friendly side wagers between golfers — like Splitwise for the gentlemen's bets your foursome already makes.

$2.99 · In-app purchases

PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
5.0
2 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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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.

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.

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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> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for PAR-LAY: 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

Implement a more robust filtering and search functionality.

Assumption to check: Users may have difficulty navigating between different sports and events.

Validate with people who use this workflow before building.

Hypothesis 2

Simplify the subscription process and provide clear information about features.

Assumption to check: In-app purchasing can be confusing for users.

Validate with people who use this workflow before building.

Hypothesis 3

Introduce detailed analytics and insights on user betting history.

Assumption to check: Limited analytics for user betting trends.

Validate with people who use this workflow before building.

Hypothesis 4

Add a feature to bundle bets and manage them more efficiently.

Assumption to check: Users may find it hard to manage multiple bets.

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

PAR-LAY is a tracker for friendly side wagers between golfers — like Splitwise for the gentlemen's bets your foursome already makes. Add your crew, plug in their handicaps, and PAR-LAY helps you write up clean handicap-based lines for the round. After everyone tees off and finishes the round in real life, enter the final scores and PAR-LAY tallies who owes who. All settlement happens between friends, outside the app. It's a notepad for the bets your group already makes. Nothing more, nothing less. WHAT YOU CAN DO • Set up a match in under a minute. Pick from 9 formats: Stroke Play, Best Ball, Match Play, Skins, 4-Ball, Vegas, Wolf, Captain, and Scramble. • Add your players. Their handicaps drive the lines. • Log handicap-based lines for each player or team — keep everyone on the same page about who's giving strokes to who. • Make matches public so anyone in your group can join, or private and invite-only for your regular foursome. • Team play with auto-calculated team totals. • Approval system: when someone joins, both sides agree to the line. • Enter final scores when the round wraps. PAR-LAY does the math and shows the running tally. WHO IT'S FOR Golfers who already have friendly stakes on every round and want a clean way to track them. The friend group that argues about strokes every Saturday morning. Anyone who's ever scribbled tallies on the back of a scorecard. NO REAL MONEY PAR-LAY does not process, hold, or pay out any real currency. All amounts shown are virtual credits that you and your friends settle in person, outside the app. PAR-LAY is a tracking tool only. ONE-TIME PURCHASE $2.99 to download. No subscriptions. No ads. No in-app purchases. Buy once, use it forever with your group. Built by a golfer who got tired of doing the math.

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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
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Axios
Zustand
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.