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.
Midnight brings true dark mode to every website you visit in Safari — automatically, instantly, and without the blinding white flash you get from other dark mode extensions.
$0.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Midnight: Dark Mode for Safari: map the core Productivity workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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
Assumption to check: Limited website support for dark mode
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Poor user interface design
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of customization options
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No trial version
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Midnight brings true dark mode to every website you visit in Safari — automatically, instantly, and without the blinding white flash you get from other dark mode extensions. Unlike simple CSS inversion tools that break images and make pages look wrong, Midnight uses intelligent color overrides that preserve readability and visual hierarchy. Text stays crisp, links stay distinguishable, and your content looks the way it should — just darker. FEATURES Instant activation — dark styles inject before the page even renders, so you never see a flash of white Three activation modes — follow your system appearance, stay always on, or toggle manually Smart image handling — choose to dim images slightly, darken them, or leave them untouched Per-site control — exclude specific sites from darkening with one tap from the toolbar popup Unified settings — preferences sync between the app and the extension seamlessly Universal — one purchase works across iPhone, iPad, and Mac BUILT FOR SAFARI Midnight is a native Safari Web Extension, not a port from Chrome. It's built with Swift and WebExtensions APIs specifically for Apple platforms, which means better performance, tighter integration, and full respect for your privacy. No data collection. No analytics. No remote servers. Everything runs locally on your device.
Written user reviews are not shown here. Check current App Store reviews >
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.