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
Vinyl Trackr
Elevate the way you manage your physical music collection
$14.99 · In-app purchases
PRICE
$14.99
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 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 Vinyl Trackr: map the core Lifestyle 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 advanced filtering and sorting options.
Assumption to check: Difficulty in managing large collections
Validate with people who use this workflow before building.
Hypothesis 2
Add social sharing and album recommendations.
Assumption to check: Limited sharing features
Validate with people who use this workflow before building.
Hypothesis 3
Use barcode scanning for faster album addition.
Assumption to check: Inconvenient data entry
Validate with people who use this workflow before building.
Hypothesis 4
Create an engaging onboarding experience with tutorials.
Assumption to check: Poor user onboarding
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
Elevate the way you manage your physical music collection. **Vinyl Tracker** is the ultimate archival tool for collectors of Vinyl, LPs, EPs, Cassettes, and more. Designed for the dedicated enthusiast, Vinyl Tracker allows you to curate a digital catalog of your analog world without compromising your privacy. **True Ownership, No Subscriptions** We believe your collection belongs to you. That’s why Vinyl Tracker has no monthly fees or hidden subscriptions. Once it's yours, it's yours. **Seamlessly Integrated** Whether you are browsing your collection on your iPhone, organizing on your Mac, or immersing yourself in your library on visionOS, your data stays perfectly in sync. Your collection follows you across iOS, iPadOS, macOS, and visionOS. **Deep Detail Capture** Don't just list your records—archive them. * **Visuals:** Store high-resolution cover art and photos of booklets. * **Details:** Capture full album metadata and comprehensive song lists. * **Versatility:** Track everything from 12" LPs to vintage cassettes. **Privacy First** Your data is secure and private. No cloud-harvesting or third-party tracking—just you and your music.
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-paper
zustand
BUILD KIT DIFFICULTY
Intermediate
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.
