Original works of software for Apple platforms.

Compose original images from mathematical functions, fractals, fields, and noise — no code required — then animate, vary, and export.

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Adaptive spaced-repetition study that emphasizes exactly what you're weakest at — and follows you across every Apple device.

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Set personal goals and track your pursuits, using iPhone, Apple Watch, iPad, Mac, and Vision Pro.

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A markdown editor like no other! Work on macOS, iPad, iPhone, or Vision Pro (one price, all platforms). Work in Markdown, export multiple publishing formats, with extensions for poetry, mathematics, and more.

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A fun, addictive memory challenge. Completely free, no ads!

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