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
Golf Hits Counter
Simple Golf Hits Counter does exactly what the name promises: it helps you manually count every stroke on the golf course, hole by hole.
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.8
6 ratings · Top 50%
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 included14 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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 Golf Hits Counter: 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
Introduce more detailed statistics and analytics.
Assumption to check: Limited features for advanced users
Validate with people who use this workflow before building.
Hypothesis 2
Enable sharing of scores and stats with friends.
Assumption to check: Lack of social features
Validate with people who use this workflow before building.
Hypothesis 3
Clarify the benefits and features of the premium subscription.
Assumption to check: In-app purchase confusion
Validate with people who use this workflow before building.
Hypothesis 4
Redesign the UI for a more contemporary look.
Assumption to check: User interface not modern
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
Simple Golf Hits Counter does exactly what the name promises: it helps you manually count every stroke on the golf course, hole by hole. No complicated setup. No account. No distractions. Just open the app and start counting. Use it on your iPhone, or make things even easier with Apple Watch. Keep your iPhone in your pocket, or leave it behind, and track your strokes directly from your wrist while you play. For every stroke, simply tap +. Made a mistake? Tap - to remove a stroke from the current hole. When you finish a hole, tap NEXT to move on. Need to check or correct an earlier hole? Tap PREVIOUS and adjust your score whenever needed. Your score is saved automatically whenever you use the app, so your round can be restored if the app is closed or your device restarts. When your iPhone and Apple Watch are paired correctly, your data is continuously synchronized between devices. There is no registration, no sharing, no advertising, and no in-app purchases. Just a clean, simple golf counter that works right away. To export your data, swipe left in the iPhone app to open the scoring screen, then tap the export button in the top-right corner.
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
Starter
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.
