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 Vibrations
vinyl vibrations is the essential tool for audiophiles and vinyl collectors who demand the best sound quality from their turntable setup
$3.99 · In-app purchases
PRICE
$3.99
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 Vibrations: 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
Focus on exclusive vinyl content and curated playlists.
Assumption to check: Limited catalog of music compared to larger platforms.
Validate with people who use this workflow before building.
Hypothesis 2
Simplify UI with a focus on essential features.
Assumption to check: User interface can be cluttered with too many features.
Validate with people who use this workflow before building.
Hypothesis 3
Ensure high-quality audio playback and buffering optimization.
Assumption to check: Inconsistent playback quality.
Validate with people who use this workflow before building.
Hypothesis 4
Implement advanced filtering and sorting options for easier library management.
Assumption to check: Difficulties in managing large music libraries.
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
vinyl vibrations is the essential tool for audiophiles and vinyl collectors who demand the best sound quality from their turntable setup. it uses your iphone's advanced sensors to detect and analyze vibrations that can affect your vinyl playback. get the most from your vinyl collection even the finest turntables and most expensive cartridges can be compromised by environmental vibrations. vinyl vibrations helps you identify and eliminate these hidden sound quality killers by: - measuring vibration levels - analyzing vibrations across all three axes (x, y, z) - providing real-time vibration waveform visualization - offering recommendations for your specific setup place your iphone on your turntable or nearby surface, tap "run test," and vinyl vibrations does the rest: use vinyl vibrations to: - find the optimal location for your turntable - test the effectiveness of isolation platforms and feet - evaluate wall-mounting options - determine speaker placement to minimize feedback - verify improvements after making changes whether you're setting up a new turntable, troubleshooting sound issues, or fine-tuning your existing system, vinyl vibrations provides the objective data you need to achieve audiophile-quality playback. no internet connection required - your data stays on your device. *developed by a vinyl enthusiast for vinyl enthusiasts.*
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
Axios
Redux
react-navigation
expo-av
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.
