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
HDMI Cam - OBS Camera
Turn your iPhone into a professional HDMI streaming camera.
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included15 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 HDMI Cam - OBS Camera: 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
Offer advanced editing tools such as filters and adjustments.
Assumption to check: Limited editing features compared to professional software.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a sorting and filtering system for the gallery.
Assumption to check: Difficult to navigate through media saved.
Validate with people who use this workflow before building.
Hypothesis 3
Integrate cloud storage options for user convenience.
Assumption to check: No cloud backup for captured media.
Validate with people who use this workflow before building.
Hypothesis 4
Create an onboarding guide to assist new users.
Assumption to check: Lack of user tutorial for new users.
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
Turn your iPhone into a professional HDMI streaming camera. HDMI Cam is designed for OBS streaming, video meetings, capture cards, and teaching demos. Connect your iPhone to an HDMI adapter and capture card to get a clean, watermark-free camera feed with no distracting UI. PRO OUTPUT IN 2.0 - Phone Direct Output: follows your phone orientation by default, ideal for monitoring, meetings, and regular capture. - OBS Portrait Optimized: for capture cards that can capture landscape only. Output a full-frame landscape signal, then rotate the source 90 degrees in OBS to get a full-pixel portrait feed. - Clean Output: hide all overlays before going live. LIVE CONTROL - Tap to focus, long press to lock AF/AE and avoid focus hunting or exposure jumps. - Double tap to open Settings and quickly control camera switching, grid, mirroring, test overlay, and clean output. - Front camera auto mirroring for better self-facing capture and portrait workflows. TEST OVERLAY Before going live, check device model, active camera, AF/AE status, screen orientation, output frame, battery, power connection, and thermal state. iOS NATIVE VIDEO EFFECTS HDMI Cam works with iOS native video effects. While the app is running, open Control Center and tap “Video Effects” to enable supported system features such as Portrait, Studio Light, and Voice Isolation. Perfect for: - OBS streaming and portrait live streams - E-commerce live selling and teaching demos - Video meetings and remote classes - Face cam and secondary camera workflows For best results, use an official Apple HDMI adapter or a reliable USB-C/Lightning HDMI adapter with a mainstream HDMI capture card.
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.
