CalibratedDecisions.

Post · Everyday apps

Jev in a Grammarly-style Mac app

Desktop writing app using Jev for fast structured writing judgments.

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Niels Mouthaan @nielsmouthaan

Built a Grammarly-like Mac app with Jev.

Jev is TypeSafe’s first “System One Model”, built for fast, structured decisions rather than generating text like an LLM.

I wanted to see how fast that feels in a real app.

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How builders describe it

A Grammarly-like Mac app built on Jev to test how fast structured decisions feel in a real writing tool.

The decision Jev makes

Everyday choices from a short list: which category, which option, yes or no.

Where it fits

Small apps for daily life built on Jev: food logs, travel, shopping, productivity and fun one-off tools you can try in a browser. All 176 everyday apps projects →

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