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
CINE WHITE BALANCE
Turn your iPhone into a professional-grade cinematography color translator and exposure meter
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
4 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.
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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 included16 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 CINE WHITE BALANCE: 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
Include additional editing capabilities such as filters and cropping.
Assumption to check: Limited editing features compared to full-fledged photo editing apps.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a guided onboarding tutorial.
Assumption to check: Some users find the UI not user-friendly for beginners.
Validate with people who use this workflow before building.
Hypothesis 3
Add functionality for batch editing and applying settings to multiple images.
Assumption to check: No support for batch processing of multiple images.
Validate with people who use this workflow before building.
Hypothesis 4
Incorporate cloud storage options for saving edits.
Assumption to check: Lack of cloud backup for user edits.
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-grade cinematography color translator and exposure meter. Designed for Directors of Photography, Camera Assistants, Gaffers, and Indie Filmmakers, Cine White Balance bridges the gap between environmental light readings and the exact menu settings your camera sensor requires. Don't settle for generic calculations that leave you guessing in post-production. Get instant, calibrated menu step translations for the industry's leading camera ecosystems, plus live-sensor ND filter calculations for perfect exposure. Key Features Live Advanced ND Calculator: A true live-reading exposure engine. The app actively reads the Scene EV through your lens. Input your target FPS, ISO, Shutter, and Iris (T-Stop or F-Stop), and the app instantly outputs the exact cinema-standard ND filter required (ND8, ND64, ND128, etc.) along with the precise decimal stop reduction. Direct Menu Translation Engine: No more abstract data decimals. Read a light source and get the exact color settings required for your camera body—including Sony C-Tint, ARRI CC, RED Tint, Canon Shift, and more. Massive Camera Ecosystem Support: Native telemetry profiling for ARRI, RED, Sony Cinema/Alpha, Canon Cinema/EOS R, DJI (Cinema & Mavic drones), Fujifilm, Z CAM, Kinefinity, Leica, and Panasonic Lumix. Tactile Hardware-Inspired UI: A perfectly symmetrical, swipeable dashboard mapped out for rapid, run-and-gun operation. Enter highly specific custom fractional shutter angles and ISOs via direct keypad entry, or use the sliding segmented scale for instant EV compensation. Visual Precision Gauges: Track environmental Kelvin (2000K–7000K) and Magenta/Green tint shifts on high-contrast, real-time horizontal light meters engineered explicitly for bright, harsh filming environments. Immersive Shutter Response: Full physical confirmation on every tap. Features customized haptic feedback loops capped off by a heavy mechanical shutter simulation and screen-flash exposure effect when snapping measurements. Built for the Set Zero Subscriptions / Zero Ads: Built by a filmmaker, for filmmakers. Pay once, use forever. Live Match Delta: Lock a reference lighting state as an anchor and track real-time color temperature drift as you move across the stage or wait out changing weather conditions. Spot Metering Precision: Target exact fixtures, mixed-lighting spill arrays, or color-neutral 18% gray cards using an adjustable on-screen spot sampler. Stop guessing your color offsets and ND filter factors by eye. Streamline your workflow, match multi-camera arrays on a budget, and secure perfect sensor continuity with Cine White Balance today. Convert iPhone white balance readings directly into native menu steps and calculate precise Neutral Density drops. Pro precision for only $2.99—no subscriptions!
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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.
SUGGESTED BUILD STACK
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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.
