# Sergey Kruglov

> Sergey Kruglov is a product designer and engineer helping founders turn complex technology into clear, practical digital products.

This is the machine-readable index for https://skruglov.com — the portfolio of product designer and engineer Sergey Kruglov. HTML pages are canonical for humans. Markdown files linked below are intended for LLM and agent consumption.

Contact: hello@skruglov.com

## Projects

- [Surrly](https://skruglov.com/projects/surrly.md): A solo-built iOS dream journal on the App Store — designed, coded, and shipped in three months.
- [Vana](https://skruglov.com/projects/vana.md): R&D for Vana Labs — insight cards, 3D reconstruction on Metal, generative audio, and messenger agent templates in a native iOS demo.
- [4K Download Site](https://skruglov.com/projects/4k-download-site.md): As Head of Design, led the 4K Download website redesign for 60M+ users, launched subscription UX in 190 countries, and built the token-based design system behind it.
- [LALAL.AI](https://skruglov.com/projects/lalal-ai.md): Founding designer behind the product, brand, and design system foundations that helped LALAL.AI scale to 3.8 million MAU.
- [Waveroom](https://skruglov.com/projects/waveroom.md): Principal designer on Waveroom — a browser-based remote studio with a cross-platform design system and UX built around the constraints of recording in the browser.
- [Combin](https://skruglov.com/projects/combin.md): Founding designer on Combin, an Instagram growth product — two cross-platform desktop apps, product pages, and marketing assets from zero to launch.
- [Flipp](https://skruglov.com/projects/flipp.md): Web3 product design for a Gen Z crypto app — iOS MVP from onboarding to flip flow. Acquired by Rarible.
- [4K Download apps](https://skruglov.com/projects/4k-download.md): Led redesign of five desktop apps at 4K Download, shipped new products, and helped grow the suite past 60 million users.
- [Ai Video Cut](https://skruglov.com/projects/ai-video-cut.md): Founding designer for an AI video tool that shipped an MVP in six weeks and reached 25,000+ users in its first growth stage.

## Writing

- [Apple Presentations Have Always Been Something Special to Me](https://skruglov.com/blog/09-one-year-with-dot.md): My journey to WWDC 2023, from getting an invitation to experiencing Apple Park, meeting the Vision Pro, and everything in between

## Pages

- [Home](https://skruglov.com/index.md): Sergey Kruglov is a product designer and engineer helping founders turn complex technology into clear, practical digital products.
- [About](https://skruglov.com/about.md): About Sergey Kruglov
- [Colophon](https://skruglov.com/colophon.md): How this website is made
- [Projects index](https://skruglov.com/projects.md): Selected product design work

## Optional

- [Full site text](https://skruglov.com/llms-full.txt): Concatenated markdown of projects, writing, and about
- [RSS](https://skruglov.com/rss.xml)
- [Sitemap](https://skruglov.com/sitemap-index.xml)