# Arturo Díaz

> Personal site and blog of Arturo Díaz: Entropy, Mac software, and flying.

Arturo Díaz runs Entropy (https://entropy.tech), a marketing science company. Entropy runs paid media on evidence: marketing mix models, incrementality studies, and direct integrations with Meta, Google and TikTok, on its platform EPYC. On the side he builds small, fast software for the Mac. He is a pilot, a husband, and the dad of three kids.

Profiles: https://www.linkedin.com/in/arturodz · https://x.com/arturodz · https://github.com/arturodz

## Projects

- [Dictate](https://arturodiaz.com/dictate/): Hold a key, talk, let go. Dictation that keeps up when you switch between English, Spanish and French. (Mac · iPhone)
- [Inkwell](https://arturodiaz.com/inkwell/): A fast, quiet Markdown viewer with Quick Look previews and a one-key editor. (Mac)
- [BattBar](https://arturodiaz.com/battbar/): Battery percent, live watts and time left at your current draw, in the menu bar. (Mac)
- [Cooler](https://arturodiaz.com/cooler/): Cull photos straight off the camera card, keyboard only, then delete the rejects. (Mac)
- [Swift Chat](https://arturodiaz.com/swift-chat/): Google Chat as a fast, native, keyboard-first Mac app. Invite-only, for Entropy. (Mac)

## Writing

- [Dictate: hold a key, talk, let go](https://arturodiaz.com/writing/dictate.md): Why I built a dictation app for people who switch languages mid-sentence.
- [A quiet Markdown viewer](https://arturodiaz.com/writing/inkwell.md): Inkwell renders Markdown like a finished document, in the app and in Quick Look.
- [Culling photos straight off the card](https://arturodiaz.com/writing/cooler.md): Cooler shows the camera's own previews so you can reject the misses before importing anything.

## Optional

- [About](https://arturodiaz.com/about/)
- [RSS](https://arturodiaz.com/rss.xml)
- [Full text of every post](https://arturodiaz.com/llms-full.txt)