App Overview

Pastel icon

Pastel

Steven Troughton-Smith · Developer Tools

Capture and collect color palettes with Pastel!

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
4.7
1,431 ratings · Top 15%

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.

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Build Kit

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A product spec, screen plans, and build steps for your coding agent.

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What's included18 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

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.

Screen plan

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.

Differentiate and validate

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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Free quick prompt For a smaller starting point

Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Pastel: map the core Developer Tools workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

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Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

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

Incorporate features like color theory suggestions and accessibility checks.

Assumption to check: Limited advanced color tools for professionals

Validate with people who use this workflow before building.

Hypothesis 2

Add options for users to collaborate on palettes in real-time.

Assumption to check: No collaboration features

Validate with people who use this workflow before building.

Hypothesis 3

Enhance sharing capabilities with social media integrations.

Assumption to check: Basic sharing options

Validate with people who use this workflow before building.

Hypothesis 4

Allow users to customize the app interface and color themes.

Assumption to check: Lack of user customization

Validate with people who use this workflow before building.

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

App Store description

Capture and collect color palettes with Pastel! Pastel is an app for amateur developers & artists (like us!) that lets you build up a library of color palettes to use in your projects. With drag & drop on iPad, drag colors out into other apps that support dropped colors, like Pages and Keynote, or many third-party apps from your favorite developers, so you can use your Pastel library as your master color collection across apps. Seamlessly sync your library across devices with iCloud. Analyze photos from the photo library or from Files to determine their dominant colors — choosing specific colors manually if you wish — and save their color palettes to Pastel. Includes a variety of color pickers, like wheel, RGB sliders, and crayons, or pick named colors from your color library that you curate yourself. On iPad, drag and drop from the sidebar to any palette. Copy a variety of developer-focused code representations, like RGB, hex, Objective-C, Swift and SwiftUI. Paste hex codes into the sliders color picker. Copy a pixel bitmap representation of a palette to paste into your favorite pixel editor, share a screen-sized version to set as your wallpaper or Apple Watch face, or export a palette to Procreate®. Create beautiful, colorful wallpapers in various different 2D & 3D styles using Pastel's wallpaper creator. In the free version, try out the built-in library, and add your own palettes up to a limit of 8 items total. Upgrade to the unlimited version using in-app purchase. --- Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://www.highcaffeinecontent.com/privacy

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Screenshots

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Build scope

Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.

Define the first version

Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.

Set boundaries

Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.

Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

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BUILD KIT DIFFICULTY
Starter

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.