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products

A small catalogue on purpose — a few things crafted carefully rather than many things shipped fast.

MindGlitch

A field guide to your mind's glitches.

An illustrated reference for the cognitive biases running every decision you make — with interactive training modes to catch them in the wild.

Visit mindglitch.app

Multi Currency Converter

Every currency. One screen.

Two hundred currencies on a single screen — fiat, crypto, and precious metals — with a built-in calculator, historical charts, and home-screen widgets. Built for digital nomads, expats, and frequent travelers.

Visit multicurrencyconverter.com

More in the pipeline

Next products are in development — announced when they ship.

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Current prices, feature lists, and product-specific support all live on each product's own site. For policies that apply to anything sold directly by Exystems, see Refunds · Privacy · Terms.