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
AirMusic
• Featured as "New and Noteworthy" and "Staff Favorite" by Apple.
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 2.7
12 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.
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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 AirMusic: 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
Expand to support more streaming devices and services.
Assumption to check: Limited device compatibility and streaming options
Validate with people who use this workflow before building.
Hypothesis 2
Focus on improving user experience and addressing feedback.
Assumption to check: Poor user ratings and reviews
Validate with people who use this workflow before building.
Hypothesis 3
Implement offline listening capabilities with downloads.
Assumption to check: Lack of offline playback options
Validate with people who use this workflow before building.
Hypothesis 4
Add social features for sharing playlists and tracks.
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
• Featured as "New and Noteworthy" and "Staff Favorite" by Apple. • Over 500,000 copies downloaded. • Ranked in Top 25 Music Apps for 14 consecutive months. Access and stream your iPhone, iPad or iPod touch Music Library directly over WiFi from an Xbox 360, Xbox One, PS3, PS4, Chromecast or any compatible DLNA device. No Wires or special hardware needed! It can even stream to a PC running Windows Media Player. If you've heard all the hype about AirPlay and are missing out because you don't have an AppleTV, this app is for you! ◆◆◆◆◆ HOW TO USE ◆◆◆◆◆ √ Connect your iPod, iPhone or iPad to the same local network as your Xbox, PS3, PS4 or PC. √ Start AirMusic. √ For Xbox 360, navigate to the Xbox System Music Player and select your device from the list. √ For Xbox One, navigate to the Xbox One Media Player under Apps and select your device in the list. √ For PS3, navigate to the PS3 Music Menu and select your device in the list. If it shows nothing underneath, it probably means you selected the Movie or Photo menu instead. √ For PS4, locate the Media Player in the Store. √ When AirMusic detects a Chromecast device, an icon will appear in the AirMusic navigation bar. Tap on it to connect then select the music you want to stream. √ For a PC running Windows, start Windows Media Player, your iPhone Music will show under 'Other Libraries'. ◆◆◆◆◆ IMPORTANT ◆◆◆◆◆ • AirMusic is not compatible with Apple Music. • AirMusic is compatible with iCloud as long as songs have been downloaded onto your phone. Tap the little cloud download icon next to each song or album in the Music app to download them. • If AirMusic is not detecting all songs, try toggling Sync Library under iOS Settings > Music. • AirMusic requires an iPhone, iPad or iPod Touch with a minimum of 50MB of disk space to work effectively. • AirMusic is not compatible with old DRM songs purchased on iTunes. Newer iTunes DRM free purchases are compatible. • When using Chromecast, you can choose and change the music directly from within AirMusic. For all other devices, you do it from these devices (ie Xbox, PS3, PC). If you are experiencing any other issues, please contact us at [email protected]. We can't help you if we don't hear from you! AirMusic is Copyright © Plutinosoft, LLC Powered by Platinum UPnP SDK http://plutinosoft.com/platinum
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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.
