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
LumaNight - Dark Mode for Web
Stop squinting at blinding white websites
$0.99
PRICE
$0.99
No 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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A product spec, screen plans, and build steps for your coding agent.
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What's included
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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Stop squinting at blinding white websites. LumaNight brings dark mode to EVERY website, even where it never existed before. WHY LUMANIGHT? ○ Automatic dark mode on every website ○ Every text checked for readability, not just recolored ○ Cookie banners and embedded content included ○ Photos and logos keep their original colors ○ No ads, no trackers, 100% private THREE CONTRAST LEVELS ◆ Maximum Deep black with the strongest text contrast, aiming for the WCAG AAA readability standard. This is the default. ◆ Balanced Slightly lifted surfaces that keep more of a site's own colors, still with a high contrast target. ◆ Soft A gentler, dimmed look for reading in a dark room. BUILT FOR READING Every text is measured against the surface behind it and brightened until it is comfortably readable. Faded grey text, low contrast footnotes and translucent labels are fixed automatically. THE WEB STILL LOOKS LIKE ITSELF Only lightness is remapped, hues stay: a blue site stays blue instead of turning into flat grey. YOUR CHOICE, PER WEBSITE Switch dark mode off for a single website and keep it everywhere else. Changes apply instantly, without reloading. PRIVACY FIRST No accounts, no tracking, no data collection. Everything happens on your device. SETUP IN 30 SECONDS 1. Open Settings, then Apps, then Safari, then Extensions 2. Enable LumaNight 3. Allow for All Websites 4. Tap the extensions button in the address bar --- Privacy Policy & Terms of Use: https://merzkevin.de/privacy-LumaNight.html
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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.
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
BUILD KIT DIFFICULTY
Not assessed in a Build Kit yet.
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.
