Hi. You must be a rare species if you're reading my bio 😆

My name is Daniel Nguyen. I've been a product engineer for more than 15 years.

Then one day, I discovered Indie Hacking and find it fascinating.

I quit my cushy job to start building in public.

My first product was KTool.io, a tool to send articles & newsletters to Kindle.

I'm half blind, and so I started KTool as a way to offload reading to the Kindle as much as possible.

After 1 year, I didn't find a good way to grow it to ramen profitability, so I decided to learn more about generative AI & OpenAI API, hopefully to find a good freelance gig.

I did land a couple of interesting gigs, but what more interesting is I found a new product idea: BoltAI - a better way to use OpenAI & other AI services on macOS.

I started it purely to learn more about SwiftUI development & OpenAI app development (the so called "AI wrapper")

It's now my top revenue generating product (500ドルK+).

During building BoltAI, one customer asked about the ability to chat with PDF natively on Mac (another "AI wrapper" idea), I find it interesting and so I decided to build it.

PDF Pals recently reached 1000+ paid customers.

And finally, I build ShotSolve and Oh One Pro as a lead magnet for BoltAI (engineering as marketing, or side project marketing)

It was welcomed by many mac users and so far, has brought many qualified leads to BoltAI. Alright, enough about me. What's about you?

Do you plan to build something cool in 2026?