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
SwingVision: Tennis Pickleball
Improve your tennis or pickleball game instantly
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
4,993 ratings · Top 15%
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 included18 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 SwingVision: Tennis Pickleball: 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
Improve your tennis or pickleball game instantly. Break down your matches, see highlights by shot type, get real-time line calls and improve faster than ever before. The Official Player & Ball Tracking App of Tennis Australia, LTA and ITA. Backed by tennis pros Andy Roddick and Lindsay Davenport. Built by AI experts from Tesla and Apple. SwingVision's patented AI provides automated stats, highlights & line calling using just a single camera! Core Features: • Track shot speed, depth, accuracy and rally length • Get automated stats and scoreboards on your video • Trim dead-time and create highlights of your best rallies • Get personalized coaching after each session • Set weekly goals and improve your game over time Apple Watch Features: • Challenge line calls with slow-motion replays • Use Siri to start tennis practices and matches • Save tennis workouts to Apple Activity and HealthKit INDIVIDUALS Use SwingVision to get automated analysis of shot speed, depth and accuracy. Review video footage shot-by-shot or point-by-point, share pro-quality match highlights on social media with scores and stats overlaid, and get coaching advice after every session. PARENTS, COACHES, & TEAMS Use SwingVision to automatically track your students' scores and stats. Analyze your students' video highlights and match stats over time to objectively pinpoint areas for improvement. **** BACKED BY PROS **** "SwingVision is the first solution to bring sports intelligence to any court in the world, using just your smartphone. I’m thrilled to work with the team as they push the boundaries of tennis and technology." - Andy Roddick "On tour, we had to pay thousands of dollars to achieve our potential on the court. Now, thanks to SwingVision, professional-grade technology is available in a handy app for tennis players of every level." - Lindsay Davenport **** SUBSCRIPTIONS **** Subscribe to SwingVision Pro to unlock automated scoring, line calling and unlimited cloud storage for life! Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription. Subscription payments will be made via your App Store account and will auto-renew within 24 hours of expiration, one month from purchase date for monthly (or one year from purchase date for yearly). Turn off auto-renew at least 24 hours before expiration in your App Store settings to let your subscription lapse. The current price of SwingVision Pro is $179.99 USD per year ($14.99 USD per month). Prices may vary by country. Privacy Policy: https://swing.vision/privacy-policy/ Terms of Service: https://swing.vision/terms/
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
Implement a more intuitive navigation flow with clear pathways.
Assumption to check: Users find it difficult to navigate between match logs and analysis.
Validate with people who use this workflow before building.
Hypothesis 2
Offer personalized insights based on user data.
Assumption to check: Performance insights can be too generic.
Validate with people who use this workflow before building.
Hypothesis 3
Provide more value in the free tier to enhance user retention.
Assumption to check: Free version lacks many features.
Validate with people who use this workflow before building.
Hypothesis 4
Integrate social sharing features to enhance user engagement.
Assumption to check: Limited sharing options for match results.
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
React Native
Expo
Axios
Victory Native
React Navigation
Zustand
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.
