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
汽水音乐: AI Music Generator
汽水音乐 is an AI music generator that helps you turn ideas into original music.
Free
PRICE
Free
No in-app purchases
BUSINESS MODEL
Free
No overall Grossing estimate available
RATING
★ 1.8
22 ratings · Below Average
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.
First kit free with a verified email
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Combine features and design from your favorite apps.
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Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included
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 汽水音乐: AI Music Generator: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
汽水音乐 is an AI music generator that helps you turn ideas into original music. Describe the style, mood, genre, or sound you want, and 汽水音乐 generates music based on your prompt. Try different ideas, explore new musical directions, and create tracks for different moments and creative projects. Create Music Generate music from simple text prompts and experiment with different styles, moods, melodies, rhythms, and arrangements. Explore Your Ideas Create multiple versions, refine your prompts, and discover new sounds that match your vision. Simple & Accessible 汽水音乐 makes AI-powered music creation easy, even if you have no professional music production experience. Subscriptions 汽水音乐 may offer auto-renewable subscriptions with access to premium features. Subscription prices and periods are shown in the app before purchase. Payment is charged to your Apple Account upon confirmation. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. You can manage or cancel your subscription anytime through your Apple Account settings. Privacy Policy Please review our Privacy Policy to learn how information is handled when using 汽水音乐. Privacy Policy: https://docs.google.com/document/d/1frsXNw9rUkELNBj30M50UeQS6t_hX0sbXa72wxMmb9w/edit?usp=sharing Terms of Use Use of 汽水音乐 is subject to our Terms of Use. Terms of Use: https://docs.google.com/document/d/1BnQ09T6fGKovxnq4XPcheRMLZfZGzpvNHpJ8zwDogmk/edit?usp=sharing
Written user reviews are not shown here. Check current App Store reviews >
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
Generous offline download limits
Assumption to check: Can't play offline
Validate with people who use this workflow before building.
Hypothesis 2
Better personalization with explicit feedback
Assumption to check: Algorithm doesn't understand taste
Validate with people who use this workflow before building.
Hypothesis 3
Limited on-demand plays for free users
Assumption to check: Shuffle-only on free tier
Validate with people who use this workflow before building.
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 AV
Supabase
RevenueCat
BUILD KIT DIFFICULTY
Not assessed in a Build Kit yet.
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.
