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 Tracer - Track Your Shots
Golf Tracer makes it easy to draw smooth, accurate ball flight lines on any video.
$19.99 · In-app purchases
PRICE
$19.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.2
24 ratings · Top 30%
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 Golf Tracer - Track Your Shots: 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 guided step-by-step tracking experience.
Assumption to check: Users find the tracking process cumbersome.
Validate with people who use this workflow before building.
Hypothesis 2
Provide more detailed statistics and visualizations.
Assumption to check: Limited analytics options.
Validate with people who use this workflow before building.
Hypothesis 3
Improve app stability and performance.
Assumption to check: Some users report crashes during heavy use.
Validate with people who use this workflow before building.
Hypothesis 4
Make pricing and features clearer to users.
Assumption to check: Subscription costs are unclear.
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
Golf Tracer makes it easy to draw smooth, accurate ball flight lines on any video. Get automatic detection, simple tools, and fast exports for sharing or creating highlight clips. Whether you want clean visuals or a quick way to show your shot shape, the app gives you a fast and precise way to trace your ball path. Free Features - Auto ball start point detection - Auto impact time detection - Curve adjustment for a natural ball flight - Manual dot controls for complex trajectories - High quality video export - Share anywhere in seconds - Two free saves included Pro Features - Unlimited saves - No paywall interruptions - Faster workflow with no limits on projects How It Works - Import your video - The app detects your ball start and impact point - Adjust the curve and landing location. - Export your traced video and share instantly Perfect for - Course highlights - Range sessions - Social media posts - Golf content creators Simple controls, accurate tracking, and clean results. Start tracing your shots today. TERMS OF USE: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ PRIVACY: https://sites.google.com/view/golf-tracer CONTACT: [email protected]
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.
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BUILD KIT DIFFICULTY
Advanced
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.
