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
Soor ▹
Soor is a beautiful, premium music player for your iPhone & iPad
$6.99 · In-app purchases
PRICE
$6.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.3
451 ratings · Top 30%
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 included17 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 Soor ▹: 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
Implement robust offline playback and cache management.
Assumption to check: Limited offline functionality
Validate with people who use this workflow before building.
Hypothesis 2
Optimize search results with caching and predictive text.
Assumption to check: Search can be slow
Validate with people who use this workflow before building.
Hypothesis 3
Add options for sharing playlists and tracks on social media.
Assumption to check: Lack of social sharing features
Validate with people who use this workflow before building.
Hypothesis 4
Implement CarPlay and AirPlay support for seamless playback.
Assumption to check: No integration with smart devices
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
Soor is a beautiful, premium music player for your iPhone & iPad. Features: - First feature rich 3rd party Apple Music app. - Apple curated content personalised to your listening taste. - Play, search, like, share and add songs from across the entire Apple Music catalogue. - Intuitive, fully gesture driven user interface. - Light, Dark and Black themes. - Musixmatch integration. - Last.fm auto-scrobbling. - Widgets. - Magic Mix. - Release Alerts. - iPad support including split-screen and slide-over. - CarPlay support. Requirements: - Music app is required to use Soor. - App only works with Apple Music or songs you uploaded to Music.app. No other music service is supported. In case you're wondering what Soor means, pronounced Sur (Soar), it's Hindi for melody/note. For F.A.Q. and limitations visit: soor.app/faq If you have any doubts please email: [email protected] *Soor is a 3rd party Music player. Apple, the Apple logo, Apple Music, iPhone are trademarks of Apple Inc., registered in the U.S. and other countries and regions. Album artworks used in screenshots above are not actual artwork image for the albums due to licensing concerns. Actual artworks in app will be shown correctly.
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.
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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.
