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
Swing Coach - Golf
Practice with Voice Feedback:
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
3,512 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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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 Swing Coach - Golf: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Practice with Voice Feedback: Swing Coach is the #1 golf practice app with instant voice feedback on your golf swing, right after each swing. Focus to Improve: You tell Swing Coach what you want to work on, and it gives you real-time voice feedback. Swing Plane, Hand Path, Hip Depth, Spine Stability, Flying Elbow, Shoulder Plane, and more. See how you compare to the best golf swings in the world. Practice Anywhere: Use Swing Coach indoors or outside. With or without a golf ball. At the range or on the course. It’s simple, fast, and accurate. No Special Equipment: Swing Coach uses the latest in AI technology to track your club head and body, with just your phone. No special equipment. No dots. Just setup your phone, and swing. --------------------- Terms of Service: https://swingintelligence.com/terms-of-service Privacy Policy: https://swingintelligence.com/privacy-policy
Written user reviews are not shown here. Check current App Store reviews >
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
Add advanced analytics and personalized training plans.
Assumption to check: Limited swing analysis features compared to professional tools.
Validate with people who use this workflow before building.
Hypothesis 2
Introduce a freemium model with basic features.
Assumption to check: High subscription cost may deter users.
Validate with people who use this workflow before building.
Hypothesis 3
Implement a guided onboarding process.
Assumption to check: User onboarding can be confusing for new users.
Validate with people who use this workflow before building.
Hypothesis 4
Add social features like user profiles and sharing swings.
Assumption to check: Limited community engagement features.
Validate with people who use this workflow before building.
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
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.
