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
Song AI Maker: Generate Music
Transform your ideas into fully-produced songs in seconds! Whether you're an aspiring artist or just looking for fun, Song AI empowers you to create original music effortlessly
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
1,481 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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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/
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 Song AI Maker: Generate Music: 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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Continue in Rork >
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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
Expand the variety of styles to attract more users.
Assumption to check: Limited song styles available for generation
Validate with people who use this workflow before building.
Hypothesis 2
Clarify subscription benefits and improve user onboarding.
Assumption to check: In-app purchase model can be confusing
Validate with people who use this workflow before building.
Hypothesis 3
Optimize backend processing to reduce wait time for users.
Assumption to check: Audio generation can be slow
Validate with people who use this workflow before building.
Hypothesis 4
Add options for users to share their creations on social media 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
Transform your ideas into fully-produced songs in seconds! Whether you're an aspiring artist or just looking for fun, Song AI empowers you to create original music effortlessly. From lyrics and melodies to full vocals, Song AI generates everything from scratch based on your vision using cutting-edge AI. With a premium subscription, you will get the following benefits: Fast Song Generation: Get a complete song in seconds—no musical experience needed. Innovative AI Music Creation: Advanced AI crafts everything from lyrics to music and vocals, tailored to your input. Realistic Vocals and Instruments: Experience lifelike vocals and authentic instrumentals in every track. Create from Scratch: Generate lyrics, music, and vocals in over 30+ genres and moods. Random Song Creation: Feeling spontaneous? Let the AI surprise you with a unique song. User-Friendly Interface: Intuitive design makes it easy for anyone to create music, from beginners to pros. Explore Multiple Genres: Rock, Pop, Jazz, Hip-hop, EDM, and beyond! Discover the future of music-making with Song AI. Create, share, and bring your music to life effortlessly. To generate new songs you need to have an active subscription. Terms of Use: https://songsynth.com/terms Privacy Policy: https://songsynth.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
@react-navigation/native
axios
react-native-audio-player
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.
