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
TIDAL Music: HiFi Sound
Get unlimited access to over 180 million songs in best-in-class sound quality with TIDAL
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
246,944 ratings · Top 15%
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 included19 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 TIDAL Music: HiFi Sound: 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
Offer a better free tier with more offline tracks.
Assumption to check: Limited offline listening options for free users
Validate with people who use this workflow before building.
Hypothesis 2
Improve streaming stability and provide quality settings.
Assumption to check: Occasional streaming quality issues
Validate with people who use this workflow before building.
Hypothesis 3
Optimize app performance and load times.
Assumption to check: Navigation can be slow at times
Validate with people who use this workflow before building.
Hypothesis 4
Enhance sharing capabilities with more platforms.
Assumption to check: Limited social sharing features
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
Get unlimited access to over 180 million songs in best-in-class sound quality with TIDAL. Enjoy the music you love and discover new tracks through our library of millions of songs, mixes based on your listening habits, and playlists curated both by TIDAL editors and other fans. Try TIDAL free for 30 days, and choose from a range of plans suited to fit your needs. All plans include: - Millions of songs in HiRes lossless sound quality up to up to 24-bit, 192 kHz and Dolby Atmos - Ad-free listening, unlimited skips - Personalized mixes based on your preferences - Editorially curated playlists - Offline mode - Track and share your streaming activity - TIDAL Connect, to listen in lossless quality on supported devices Download the TIDAL app today to sign up for a subscription. Subscription automatically renews on a monthly basis. Cancel anytime. Terms and Conditions of Use: http://tidal.com/terms Privacy Policy: https://tidal.com/privacy
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
Zustand
@react-navigation/native
expo-av
Axios
BUILD KIT DIFFICULTY
Expert
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.
