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.
Walk-up songs done right
$0.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Walkout Songs: OnDeck Audio: 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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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
Assumption to check: Limited song library compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No offline access for songs
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of social sharing features
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Single payment model limits user access
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Walk-up songs done right. No subscriptions, ever. OnDeck Audio is the simplest way to run walk-up music, batting lineups, and player intros for your baseball or softball team. Built for coaches, team parents, and DJs who want pro-feeling walkouts at the field — without the monthly fees. Bring the energy of a Major League stadium to your local ballpark. From Little League to travel ball to weekend tournaments, OnDeck Audio keeps the game moving and the energy high. WHY TEAMS PICK ONDECK AUDIO No Subscription, Ever Pay once, use forever. No monthly fees, no per-player charges, no upsells. Walk-Up Music That Hits on Cue Choose the perfect song for every batter, clip the best part, set the exact start point. Build Your Roster in 30 Seconds Import players from a screenshot of your league app. No typing every name by hand. Drag-and-Drop Lineup Reorder your batting lineup in two taps. The app auto-advances as the game moves. Share With Any Coach or Parent One link sends your full team to another device. No re-typing rosters. Built for Live Game Use Simple interface designed for the field. No complex menus, no learning curve. PERFECT FOR Baseball walk-up songs Softball walkout music Little League walk-up intros Travel ball tournaments Player announcements and team intros Pre-game hype and warm-ups From leadoff walk-ups to late-inning hype moments, OnDeck Audio helps you create a game-day atmosphere players and families will remember. Download today. Set up in minutes. Be ready by first pitch.
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.