App Overview

Colordrop: Color Picker icon

Colordrop: Color Picker

George Jones · Developer Tools

Capture and inspect the colors in your photos with Colordrop – a modern and advanced color picker.

$4.99 · In-app purchases

PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.8
14 ratings · Top 5%

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

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What's included17 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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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 Colordrop: Color Picker: 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

Implement advanced color manipulation tools, like gradients or palettes.

Assumption to check: Limited color selection features

Validate with people who use this workflow before building.

Hypothesis 2

Allow users to export their color collections to various formats.

Assumption to check: No option to export colors

Validate with people who use this workflow before building.

Hypothesis 3

Enable users to share their favorite colors or palettes with others.

Assumption to check: Lack of community sharing

Validate with people who use this workflow before building.

Hypothesis 4

Optimize app performance for older iOS devices.

Assumption to check: Inconsistent performance on older devices

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 inspect the colors in your photos with Colordrop – a modern and advanced color picker. CAPTURE Capture colors from your photos. - Pick colors from any image or photo. - Open from your Photo Library, Camera, or Files. - Live Capture lets you see the colors around you in real time. - Open images or import colors from Adobe Creative Cloud. - Easily view and pick the most dominant colors in an image. - Select a 'capture radius' to have granular control over the colors you capture. - The Colordrop app extension lets you pick colors without opening the app, for example in the Photos app. - Today View widget shows you your most recent colors. - Manually add a color by hex code or using the built-in color picker. INSPECT The most detailed color analysis tool available on iPhone or iPad. - RGB, CYMK and RYB color overviews. - CIE-LAB, CIE-LCH, HSL, HSV, XYZ color values (and many more). - Complementary and split-complementary colors. - Triadic and tetradic colors. - Tints, shades, tones and monochromatic colors. - Square and analogous colors. - Similar colors for RAL Classic, Web, HKS and many more. - Color blindness simulator and color contrast checker. - Quickly copy or share color codes. - Color descriptions describe the appearance of a color in real terms. - Metadata tells you the source of the color, and when you saved it. EVEN MORE... A powerful tool for developers and creatives alike. - Powerful search feature, including support for Spotlight. - Organize your colors with tags. - Drag and drop colors to other apps, or to save new ones. - Siri Shortcuts for capturing or viewing colors. - Apple Watch app to view all of your saved colors at a glance. - Export colors to Procreate swatch, Adobe color swatch, or to JSON or CSV formats. - Change the default illuminant for accurate color in any environment. - Customize the color data you see. Colordrop is developed by a team of one! Any feedback and suggestions for new features are greatly appreciated. You can get in touch on Twitter (@penguingeorge), or by emailing [email protected].

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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.

SUGGESTED BUILD STACK
React Native
Expo
Zustand
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react-native-clipboard
expo-permissions
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.