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
DiscOne
Listen to whole albums again.
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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's included15 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 DiscOne: 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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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
Incorporate AI recommendations based on listening habits.
Assumption to check: Limited music discovery features compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Enable offline downloads for playlists and songs.
Assumption to check: No offline listening options
Validate with people who use this workflow before building.
Hypothesis 3
Integrate social media sharing for playlists and songs.
Assumption to check: Weak social sharing capabilities
Validate with people who use this workflow before building.
Hypothesis 4
Add synchronized lyrics feature for an enhanced listening experience.
Assumption to check: No lyrics display during playback
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
Listen to whole albums again. Disc One is your CD player for Apple Music. Drag a disc off your rack, drop it in the player, hear the record. An intentional listening app. Return to the experience of choosing an album, looking over liner notes, and letting an album play all the way through. YOUR APPLE MUSIC LIBRARY, SHELVED Shelves auto-populate from your recent plays and library. Flip any CD between spine and face. Curate a "My Shelf" of favorites. Focus on an artist to see their full discography. TACTILE PLAYBACK • Drag a CD into the slot • Press-and-hold prev/next to scrub at 2×, 4×, 8×, 16× • Tap the spine on top of the player to open the liner notes — full cover art and a back-cover track list • Eject to swap discs • Drag another album to queue it up next BUILT FOR LISTENING No analytics. No tracking. REQUIRES AN APPLE MUSIC SUBSCRIPTION.
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
react-navigation
react-native-reanimated
expo-av
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.
