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.
Noir is a Safari extension that automatically adds a dark mode to every website you visit.
$2.99 · In-app purchases
Evidence scope: #66 is the current overall US Paid chart position. 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 Noir - Dark Mode for Safari: map the core Utilities 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 customization options for dark themes
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No support for certain websites that do not render correctly
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Inconsistent performance on older devices
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: User interface could be more modern
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.
Noir is a Safari extension that automatically adds a dark mode to every website you visit. It makes browsing the web at night so much better. With Noir, you won’t be blinded by bright websites ever again. And the results look great too. Noir generates a custom dark style for each website you visit, based on the colors that are used on a page. You won’t even notice this happening in the background – that’s how fast it is – but you’ll certainly appreciate the end result: a beautiful dark mode tailored for each website, where contrast is preserved and highlights still pop. And with over 20 built-in themes and the ability to create your own, you can customize the results exactly the way you want. Noir works with any website you visit in Safari, automatically. By default, Noir is linked to your device’s Dark Mode, so websites will only go dark when you want them to. But you can easily customize this to your liking, even per website. Only want to use Noir on just a few specific websites? Sure thing! Disable Noir on some websites? No problem! Built from the ground up for iOS and iPadOS, the app feels right at home on your device. It supports the brand new Safari web extension feature, which means there’s no need to manually activate it every time you load a new page. The app also tightly integrates with system features such as Shortcuts, Control Center, Focus Filters, and Widgets to fully integrate Noir in all your workflows. And your settings are automatically synced to all your devices using iCloud. And just as importantly, Noir takes your privacy seriously: it doesn’t collect any of your browsing data. Period. Noir is made by an indie iOS developer. It does not include any subscriptions or ads. Buy Noir once, use it forever. Notes: • Found a website where Noir’s dark mode doesn’t look just right? Let me know by reporting it. The app will be frequently updated to address issues that are reported. Privacy Policy: • The Noir extension requires access to the websites you visit to analyze the existing style of the page and to override it with Noir's dark style. • Noir never collects your browsing data. The only data Noir ‘collects’ are your settings, and those will never leave your device or iCloud account. • You can read Noir’s full Privacy Policy at https://getnoir.app/privacypolicy
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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.