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.
MASTER THE ART & SCIENCE OF COLOR
$2.99 · 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 Color Theory Studio: 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 color palette options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of user community features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: In-app purchases may confuse users
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.
MASTER THE ART & SCIENCE OF COLOR Color Theory is the ultimate interactive vector graphic art playground for artists, designers, and anyone fascinated by the mystery of visual perception. Inspired by the legendary teachings of Josef Albers' and the "Interaction of Color," this app transforms complex academic concepts into a series of stunning, tactile challenges that will change the way you see the world. One-off payment, no subscriptions required. Free updates Do you trust your eyes? You shouldn’t. Learn why a single color can look like two different hues, master the logic of harmony, and train your brain to see "visual intervals" with mathematical precision. INTERACTIVE CHALLENGES : Color theory games Color Relativity Contrast & Harmony Transparency & Illusion Factual vs. Actual The Mixer Creative Seeing Homage to the Square The Color Studio: Your Infinite Creative Workshop The Color Studio is a revolutionary digital sandbox designed for free-form experimentation and deep visual research. Moving beyond structured games, the Studio provides you with a professional-grade canvas where you can manipulate hundreds of digital "paper" fragments to explore the subtle interactions between hue, value, and placement. It is a tactile, fluid environment that mimics a physical design studio, allowing you to build, deconstruct, and save complex color studies that can serve as the foundation for your next professional branding project or fine art masterpiece. Key Tools & Features: Precision Knife Tool with option to cut through all objects or just the select ones Free-hand exacta knife tool Image import system for advanced collage making Colors, cavas sizes and template presets for quick setups. Color Harmony generator. Quickly correct artwork colors with one tap. Layer system Pin layer to Top/Bottom to use as reference Shape Intersection Align and Distribution system Shape and color Blending. Blend shapes in 3, 5 or 7 steps with auto color harmony File save and export as PNG and Vector PDF Auto Snapping and Smart Guides Infinite canvas height and Width Eye dropper for easy color picking from within canvas Multi-select tool and marque select tool Smart context menu on double tap with apple pencil pro Undo/redo Works on both iPhones and iPads AAA paper feel with various paper textures and grain customization options Built in color harmony system for any selected object Group and ungroup selected objects Plenty of basic geometric shapes to get started easily and enhance creative workflows Multiple paper finishes options including, Matte, Gloss, rough, recycled and torn-edges Easy touch controls for scale, rotate and opacity settings 2x2 and 3x3 shape grids option Custom canvas color option Export your art directly to Social media and other graphic Design/Art Apps with one click One-tap flip vertical and horizontal options Smart menus based on selected objet/s Create amazing Bauhaus style graphics and paper collages Auto progress saving system as you work Amazing visual fidelity and graphic quality with Apple's Metal rendering system and so much more. Cut & Shape: Use the "Knife" tool to create custom fragments. Arrange & Align: Build complex studies and save them to your Gallery. Export: Share your color studies with the world or use them as inspiration for your next design project. WHY COLOR THEORY? Whether you are a UI/UX designer seeking better accessibility, a painter mastering pigment mixing, or a student of fine art, this app provides the hands-on practice that books can’t offer.
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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.