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.
The original walkout song app — trusted by thousands of teams since 2013
$6.99 · 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.
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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.
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 Song DJ: map the core Music 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: Occasional bugs in song playback
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: No offline access to saved songs
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.
The original walkout song app — trusted by thousands of teams since 2013. One-time purchase, no subscription. Walkout Song DJ is the most complete game-day music app for baseball and softball. Set up your roster, pick songs from Apple Music or your own files, and run the entire game from your phone or tablet. Walkup songs, announcements, between-innings music, situational audio, and pre-game warmups all from one app. Don't risk your game day experience to untested apps with no experience behind them. Walkout Song DJ was written by a long time coach who was the first to notice there was a need for an app like this. AI ANNOUNCEMENTS Generate professional stadium-style player announcements with an extensive collection of AI voice choices. Customize the script, pick a voice and style, and the app generates an MP3 announcement that plays before, after, or mixed with the walkout song - complete with smooth fade transitions. WALKUP SONGS Tap a player, their announcement plays, their song kicks in, and it fades out when they reach the plate. Set precise start points and durations with a simple editor. Done. BETWEEN INNINGS Dedicated inning break songs with automatic fade-out before play resumes. Set it and forget it. Grab a hot dog while the music runs itself. SITUATIONAL & PREGAME One-touch access to your national anthem, rally songs, team fight song, and anything else that fits the moment. Pre-game playlists keep the warmup energy going without interruption. BUILT FOR REAL GAME DAY After 12 years and thousands of games, the details matter: - Announcement and song mixing with volume ducking - Built-in equalizer for any speaker setup - Bluetooth speaker wake-up to avoid missing the start of audio - Tested with all the popular Bluetooth speakers - Import your own music files, recordings, or professional announcer audio - Automatic splitting of combined professional announcer files - Support for multiple teams and as many players as you can create - Works with Apple Music or imported audio files (MP3, M4A, WAV, CAF) WHY WALKOUT SONG DJ? - One-time purchase. No subscriptions, no monthly fees, no credits to run out - Actively developed and supported since 2013 - Responsive one-on-one customer support from the developer, no chatbot or ticket queue - Used by travel ball, rec league, high school, and college teams Note: Apple Music is the only supported streaming service. Spotify, Amazon Music, and other subscription services do not allow third-party playback. The app also works great with purchased iTunes songs or any imported audio files.
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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.