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.
The house exterior in lemon yellow or sun yellow? A bedroom in strawberry red? RAL iCOLOURS shows how things could look
$8.99 · 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 RAL iColours: map the core Reference 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 options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Poor ratings due to bugs and crashes
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: High price with no free trial
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.
The house exterior in lemon yellow or sun yellow? A bedroom in strawberry red? RAL iCOLOURS shows how things could look. With this app for iPhone and iPad, you can now recolour the objects in your photos with any RAL colour – quickly and easily. In only three steps, anything can be recoloured with RAL iCOLOURS: 1.Take a photo with your iPhone. 2.Select one of 2,328 RAL colours. 3.Recolour the object in the photo. RAL iCOLOURS is as useful as it is inspiring. Painters, architects, graphic designers and Web designers can now make it easier for their customers to make colour decisions. With the RAL Colours app, you can quickly give them a picture of your colour concept. You can present colour designs to your customers on site and display alternatives directly. And you can save your colour selection by project name and send photos of recoloured objects via email. The app’s colour palette includes the RAL CLASSIC and RAL EFFECT colour collections and all of the colours in the RAL DESIGN System – all 2,328 RAL colours. The corresponding L*a*b*, sRGB, CMYK and LRV values are listed for each colour. And RAL iCOLOURS is also compatible with COLORCATCH NANO, the Colorix colorimeter. This device incorporates a revolutionary new technology to accurately measure the color of smooth, structured or patterned surfaces to determine the corresponding color of the preselected swatch. NANO reads and measures 50'000 pixels separately. During reading it eliminates automatically all non-dominant colors such as shade effects and dirty surfaces. For better understanding of the functions and use of the App, please watch the demo on the video first. Link to video: https://www.ral-farben.de/iphone-app-icolours.html?&L=1 The colour values enable the user to make a visual choice of RAL colours. Only the primary standards of RAL CLASSIC, RAL DESIGN and RAL EFFECT shall be used for the preparation and control of RAL colours. RAL is a registered trade mark of RAL gGmbH. The presentation of the RAL colours is based on a licence granted by RAL gGmbH. Please visit www.ral-colours.de for further information. Due to technical limitations, colors seen in this App may not accurately reflect paint colors. To confirm your color choices refer to your color cards. © 2018, RAL gGmbH
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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.