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
Stream Camera for NDI HX
Stream Camera for NDI HX allows you to use your iPhone as a video source for your video broadcasting setup
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.2
8 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 Stream Camera for NDI HX: map the core Photo & Video 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
Add advanced features like multi-platform streaming and cloud recording.
Assumption to check: Limited features compared to other streaming apps
Validate with people who use this workflow before building.
Hypothesis 2
Improve the user interface and experience based on user feedback.
Assumption to check: 3.2/5 rating indicates user dissatisfaction
Validate with people who use this workflow before building.
Hypothesis 3
Implement adaptive bitrate streaming based on user network conditions.
Assumption to check: Inconsistent streaming quality
Validate with people who use this workflow before building.
Hypothesis 4
Include onboarding tutorials and a comprehensive help section.
Assumption to check: Lack of tutorials or guides
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
Stream Camera for NDI HX allows you to use your iPhone as a video source for your video broadcasting setup. The video is transmitted at up to 4K resolution with fast frame rates. NDI (Network Device Interface) is an IP video protocol that is used for live video streaming and production. It features low latency, making it particularly useful for live productions. This app can be used in an NDI ecosystem of cameras and other devices. The latest NDI 5 standard is supported. Full NDI and NDI HX2 are supported. Features: Video up to 4K Frame rate up to 60 fps Microphone Audio with mute H.264 and H.265 compression for HX2 Full NDI support Camera switching with support for rear wide, front wide, ultra wide, and telephoto cameras Pinch to zoom Zoom and focus control from monitor
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.
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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.
