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
Nintendo Music
Enjoy Nintendo's video-game soundtracks anytime, anywhere
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
23,968 ratings · Top 5%
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
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
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 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.
JavaScript is required to complete mailbox verification.
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 Nintendo 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.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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 Nintendo soundtracks and collaborations.
Assumption to check: Limited music library compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Implement offline downloads for premium users.
Assumption to check: No offline listening option
Validate with people who use this workflow before building.
Hypothesis 3
Add sharing options for playlists and tracks to social media.
Assumption to check: Lack of social sharing features
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the pricing structure and clearly communicate benefits.
Assumption to check: Complex subscription model
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
Enjoy Nintendo's video-game soundtracks anytime, anywhere. This is a music-streaming app that enables you to listen to tracks from numerous games, from the NES™ to the Nintendo Switch™ 2 system. (Note: A Nintendo Switch Online membership is required to access this app.) ◆ Here are some of the games with tracks that are currently available: ・ Mario Kart™ World ・ Pikmin™ 4 ・ The Legend of Zelda™: Tears of the Kingdom ・ Fire Emblem™ Engage ・ Pokémon™ Scarlet and Pokémon Violet ・ Pokémon FireRed Version and Pokémon LeafGreen Version ・ Splatoon™ 3 ・ Kirby™ and the Forgotten Land ・ Animal Crossing™: New Horizons ・ Super Mario Odyssey™ ・ Mario Kart 8 Deluxe ・ Super Mario Galaxy™ ・ Wii Sports™ ・ Metroid Prime™ ・ The Legend of Zelda: Ocarina of Time ・ Donkey Kong Country™ ・ Super Mario Bros.™ Note: New soundtracks will continue to be added! ◆ Background Playback Play tracks in the background, while your device's screen is off or if you're using a different app. ◆ Offline Playback Download tracks to your device for offline listening. ◆ Spoiler Prevention Don't want to hear tracks from a game you haven't played yet? You can limit the display and playback of songs included in a game's track list in the settings of the app. ◆ Extended Playback Some tracks can be played for longer! The music will continue to play without interruption, just like background music in a game as an accompaniment to study or work. Note: The length of tracks can be set to 5, 10, 15, 30, or 60 minutes long. ◆ Hourly Tracks Some playlists in the Animal Crossing series can be played to match the hour in your local time with the in-game music tracks for those times. ◆ Playlists In addition to offering tracks from games, there are playlists with different themes, such as playlists with tracks for individual characters, tracks you can relax to, tracks that play during battle, and more. You can also organize tracks into personalized playlists. ◆ Apple CarPlay The app can be used with your car's built-in display. --- ● Nintendo Switch Online membership (sold separately) and Nintendo Account required. Membership autorenews after initial term at the then-current price unless canceled. Not available in all countries. Internet and compatible smart device required to use app. Data charges may apply. Terms apply. nintendo.com/purchase-terms/ ● Your device must be running iOS 16.0 or later to enjoy Nintendo Music. Nintendo trademarks are properties of Nintendo.
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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
Supabase
@react-navigation/native
expo-av
Zustand
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.
