Daniel Nguyen

Daniel Nguyen is a Vietnamese solo founder based in Ho Chi Minh City, best known as the creator of BoltAI, a native AI workspace for Mac power users, and of the smaller tools PDF Pals, KTool and ShotSolve. Indie Hackers reported him earning about $33,500 a month as a solopreneur, most of it from BoltAI.

Nguyen has worked in tech for more than 15 years. He dropped out of college, started tinkering with products through a plugin for forum software, and worked as a product engineer at several tech companies. He also ran a WordPress consulting business that he grew to six figures in revenue before burning out. In 2022 he left consulting and joined the indie hacker community on X, deciding to build his own products in public.

He bootstrapped three tools in parallel: KTool, which sends web articles and newsletters to a Kindle; PDF Pals, a Mac app for chatting with PDFs; and BoltAI, which started in 2023 as a way to use ChatGPT inside any Mac app. A viral post on X made BoltAI the clear winner, and it became his main business. It has since grown into a private AI workspace that works with many models, stores chats locally, keeps API keys in the Mac keychain and supports MCP plugins, with a mobile beta.

BoltAI is unusual among AI apps because it sells a perpetual license with optional renewals instead of relying only on subscriptions, and it earns a second revenue stream through the Setapp bundle. He passed $100,000 in total revenue within about two years of going indie; Indie Hackers later put BoltAI at roughly $15,000 to $30,000 a month, PDF Pals at $1,000 to $2,000 and KTool at about $1,500 MRR.

Nguyen describes BoltAI as calm, profitable and VC-free, with real people answering support. He writes about being a product engineer and treating launches as celebrations in his newsletter, and posts the ups and downs of solo SaaS, with plenty of memes, to more than 75,000 followers on X.