App Overview

Brushes icon

Brushes

Envoza · Graphics & Design

Brushes 4 is the latest iteration of the app that started the iPhone and iPad painting revolution

$3.99 · In-app purchases

PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.6
178 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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Combine features and design from your favorite apps.

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What's included19 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 Brushes: 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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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

Offer a wider variety of customizable brushes.

Assumption to check: Limited brush options compared to competitors

Validate with people who use this workflow before building.

Hypothesis 2

Optimize drawing performance and memory usage.

Assumption to check: Performance issues with large canvases

Validate with people who use this workflow before building.

Hypothesis 3

Introduce layer management for more complex artwork.

Assumption to check: Lack of advanced features like layers

Validate with people who use this workflow before building.

Hypothesis 4

Ensure smooth saving/loading with user feedback.

Assumption to check: Inconsistent saving/loading experience

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

Brushes 4 is the latest iteration of the app that started the iPhone and iPad painting revolution. Redesigned with a clean and modern user interface, Brushes supports iPhone and iPad with optimisation for the iPhone X, iPhone XS, iPhone Pro and iPad with Apple Pencil. • Highlights: - Clean and modern user interface with light and dark modes. - Files based painting gallery. - New canvas interface. - Apple Pencil support with pressure curve. – Unlimited undo and redo. - Continuous auto-save. - Cloud Drive import and export. • Parameterized Brushes: - Selection of ready to use brushes with customisable settings. - Create your own custom brushes from millions of permutations. - Generate random brushes for inspiration. - Dynamic adjustment of brush size and opacity. • Layers: - Layer your artwork for greater control. – Lock and hide layers. – Use alpha lock to only paint where pixels already exist. – Adjust individual layer opacity. – Duplicate, rearrange and merge layers. – Apply layer blending modes: normal, multiply, screen, exclude. - Color fill any layer. – Invert layer color and desaturate. – Flip and arbitrarily transform layers. – Adjust the color balance per layer. – Adjust layer hue, saturation and brightness. • Colors: - Colour picker with hue ring and saturation square. - Store and recall your favourite colors in swatches. - Sample painting colors with the eyedropper tool. • Apple Pencil: - Intuitive and powerful pressure curve to match your style. - Configurable realtime pressure based adjustment of brush size and opacity. • Creation: - Preset canvas sizes for paper, photographs, iPhone and iPad screens, film and television displays. - Custom canvas size. • Import, export and sharing: - Import images directly from your camera roll. - Import PNG and JPEG images from cloud services. - Export your paintings for sharing or importing into other apps as PNG and JPEG to all cloud storage services or as photos directly to your camera roll. - Compatible with paintings created by Brushes 3 and Brushes Redux. • Light and dark appearances: - Choose between light and dark monochrome appearances, or current system setting. - Minimal use of user interface color so that tints in the user interface do not distract from or influence your artwork color choices. Acknowledgements. Thank you to Angela Ali, Jason M., Jeff Parker, Sandra Perez and Yoshiyuki Uchida for contributing artwork to the App Store screenshots. Please visit our website to see more of their artwork and for links to their portfolios. History. Brushes was originally created by Steve Sprang for iPhone in 2009 and for iPad in 2010. His last version, Brushes 3 was released in 2012, but was removed from the App Store in 2015. I took over development to modernise and support an app that has continued to be enjoyed by so many artists.

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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
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BUILD KIT DIFFICULTY
Advanced

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.