RetroPaint

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  All 16 classic toolsFree-form & rectangle select, eraser, fill, color picker, magnifier, pencil, brush, airbrush, text, line, curve, rectangle, polygon, ellipse and rounded rectangle.
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  The 28-color paletteLeft click for foreground, right click (or long-press) for background. Double-click a swatch to define your own color.
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  Type right on the canvasDrag a text box, type, move it and resize it — with a floating Fonts toolbar for font, size, bold, italic and underline.
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  Image menu classicsFlip/Rotate, Stretch/Skew, Invert Colors, Attributes and Clear Image — on the whole picture or just a selection.
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  Pixel-perfectNo smoothing, no anti-aliasing. Zoom up to 800% with a pixel grid and a thumbnail window.
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  Real filesOpen and save PNG, BMP, JPEG, GIF and TIFF. Copy and paste with other apps, print, and share.
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  Native on every screenBuilt in SwiftUI with a shared drawing engine. Same app on Mac, iPad and iPhone.

Download for Mac.dmg · macOS 14 or later Download for iPhone & iPad.ipa · iOS 17 or later

Mac: universal app. On first launch, right-click RetroPaint and choose Open (not notarized yet). iPhone & iPad: install the .ipa with AltStore or Sideloadly.

Or build it yourself — RetroPaint is open source:

git clone https://github.com/harkhowalia-1/RetroPaint.git
cd RetroPaint
brew install xcodegen
xcodegen generate
open RetroPaint.xcodeproj

Pick the RetroPaint scheme, choose My Mac, an iPad or an iPhone, and press ⌘R.

Requires macOS 14 / iOS 17 or later. To run on a physical device, select your Apple developer team under Signing.