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
InfiniteHoops Whiteboard
InfiniteHoops Whiteboard is a basketball whiteboard app for illustrating game plays.
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.7
888 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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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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/
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 InfiniteHoops Whiteboard: 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 social sharing features to promote user engagement.
Assumption to check: Limited sharing options for created plays
Validate with people who use this workflow before building.
Hypothesis 2
Add onboarding tutorials or guides to assist new users.
Assumption to check: Can be complex for new users
Validate with people who use this workflow before building.
Hypothesis 3
Introduce multiplayer or collaboration mode for creating plays.
Assumption to check: No collaborative features
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to customize court dimensions and player styles.
Assumption to check: Lack of customization options for court design
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
InfiniteHoops Whiteboard is a basketball whiteboard app for illustrating game plays. SIMPLE Whiteboard is simple. Draw plays with your finger to get your idea across. THREE DIAGRAMS Choose between high school, college, or professional basketball full court diagrams. Full and half court diagrams are included on iPad. SIX COLORS Illustrate your play with six built-in color choices — one for each player and one for the defense. SAVE PLAYS Save your plays for future replaying. UNDO Erase your mistakes with the undo button, the eraser, or choose to erase everything. INSTANT REPLAY Redraw your play with the touch of a button. SHARE Work on your plays and email them to your team so they can study them on their own time. CONTACT We'd love to hear what you think of the app or just to have you say hello. Partner inquiries are welcome too. Broadside Digital https://broadside.digital feedback at broadside dot digital
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
React Native
Expo
Supabase
Zustand
react-native-gesture-handler
expo-router
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.
