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.
It's 11 PM
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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 Firelight - Pixel Fireplace: map the core Graphics & Design 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 fireplace designs.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: High subscription cost for premium features.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of social features for sharing experiences.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Repetitive content with few new designs.
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.
It's 11 PM. The room is dark. You set your phone on the nightstand, tap the screen, and a fire begins to glow — tiny embers first, then rising flames, flickering across a grid of luminous dots like a miniature LED fireplace. Up close, you see the individual dots. From across the room, it's indistinguishable from a real flame. Blow to Disturb Lean in and blow. The microphone picks up your breath and the flame bends, flickers wildly, dims toward extinction — then slowly, gently recovers. It feels alive. Touch to Push Drag your finger through the flame. It parts like water, leaving a dark trail that fills back in as the fire reclaims its space. The embers at the base flare bright where you touch, like poking hot coals with a stick. Shake to Storm Give your phone a shake. The flame erupts into chaos — violent gusts tear through it, the fire scatters and fights to survive. Stop shaking and watch it slowly find its calm again. Flip to Suffocate Turn your phone face-down. The fire senses it's been cut off from air and gradually chokes out, dimming to nothing. Flip it back, and the flame reignites from the embers. Five Color Themes Classic warm orange. Eerie green. Deep purple. Cool cyan. And a stunning rainbow mode where the flame shifts through the entire spectrum from left to right — even the embers glow in matching hues. Tuned to Your Taste Adjust flame speed from a slow, meditative sway to a lively crackle. Set the height from a subtle glow to towering flames that climb past the top of your screen. Choose your LED dot size — small and dense for detail, large and bold for that chunky pixel-art look. Real Fireplace Sound A warm, crackling fire audio loop plays in the background, completing the illusion. Toggle it off for silent ambiance. Your Settings, Everywhere All preferences sync to iCloud. Uninstall, reinstall, switch devices — your fire is exactly how you left it. No ads. No subscriptions. No data collection. Just fire. Light it up. Breathe. Let the world slow down.
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.