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
CourtReserve
Book your next court in a few taps.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 2.9
362 ratings · Below Average
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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included16 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 CourtReserve: 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
Book your next court in a few taps. CourtReserve is how players at thousands of racquet and paddle sports clubs book courts, sign up for programs, and keep their playing life in one place. BOOK IN A FEW TAPS See what's open, pick your time, done. - Reserve courts under your club's rules and member rates - Register for clinics, lessons, leagues, and events - Grab a spot in open play or a drop-in session - See real availability and get instant confirmation - Pay in the app — no front desk, no phone call EVERYTHING IN ONE PLACE - Your upcoming reservations at a glance - Notifications for schedule changes, waitlists, and openings - Play at more than one club? Switch between them easily BUILT FOR RACQUET AND PADDLE SPORTS Tennis. Pickleball. Padel. Platform tennis. Squash. Racquetball. Badminton. Indoor and out, clay and hard court, public facilities and private clubs. RUN A CLUB? Owners, admins, and coaches use the app too — check today's schedule, manage court reservations, and keep an eye on the club from anywhere. We're also rolling out a new way to find places to play near you. It's available in select areas now, with more on the way. Features available to you depend on how your club has set up its account.
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 real-time availability updates and notifications.
Assumption to check: Limited court availability information
Validate with people who use this workflow before building.
Hypothesis 2
Simplify navigation and prioritize key features.
Assumption to check: Cluttered interface with too many options
Validate with people who use this workflow before building.
Hypothesis 3
Optimize app performance for smoother interactions.
Assumption to check: Inconsistent performance and responsiveness
Validate with people who use this workflow before building.
Hypothesis 4
Streamline the booking flow with clear instructions and feedback.
Assumption to check: Confusing booking process
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
Supabase
react-navigation
Zustand
react-native-gesture-handler
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.
