Founder18
Rexan Wong
18 Y/O•Hong Kong (originally); San Francisco, CA•Tech

Rexan Wong

At age 17, built Text Behind Image in 3 hours and grew it to 300K users and #1 Product of the Day on Product Hunt — per rexanwong.com (project stats) and HKIS/Young Post coverage.

What they built

Rexan Wong built Text Behind Image at age 17 — an image editing tool that lets users embed customizable text behind photo backgrounds — in just three hours. The app went viral with over 400,000 views on X and attracted hundreds of thousands of users. He has since built a portfolio of consumer apps with 500K+ total users, winning five international hackathons while still in high school, and solving everyday creative and productivity problems for a global audience.

View Project

The F18 Thesis

Verified track record

  • Young Post / SCMP article (Oct 2025) (source)
  • HKIS School News (Jun 2025) (source)
  • YouTube interview 'How a 17-Year-Old Solo Dev Got 400,000 Users': [PictureURL Finder] Checked rexanwong.com (Profile). Extracted page text did not expose any stable direct portrait image URL (no accessible og:image/img src surfaced). Per source-priority rule, not downgrading to social/third-party images. PictureURL left as [no verified image found]. (source)
Updated April 27, 2026