Testimonial.to
testimonial.to
Collect, manage and embed video and text testimonials from customers.
diff ~/p/damon-chen ~/p/ian-nuttall
Products, revenue & stack compared side by side.
Ex-Cisco engineer who built Testimonial.to and grew acquired PDF.ai into a top AI PDF tool
Both Damon Chen and Ian Nuttall are bootstrapped, build in public, have sold at least one product and are serial makers. They overlap in AI Builders and Marketing & SEO Tools. Damon started in 2020 and Ian in 2005. Damon Chen has 8 products listed on IndieMakerList vs Ian Nuttall's 4. Damon has sold 1 product and Ian the same number. On revenue, Damon self-reports $1.3M ARR (Testimonial.to + PDF.ai) (as of 2024) and Ian $100K ARR (Keyword Metrics + URL Monitor) (as of 2024). On X, Damon has about 99K followers and Ian about 82K.
Revenue figures are self-reported by each maker and not audited; dates and scope differ. Highlighted categories are shared by both.
testimonial.to
Collect, manage and embed video and text testimonials from customers.
pdf.ai
AI tool to chat with, analyze and work with PDF documents; acquired by Damon for about $20K and grown from there.
chat.sh
Help center that answers customer questions directly, citing the pages it used.
pdfgen.com
Generate PDF documents with AI.
ian.is
Search Console-powered SEO toolkit: internal links, quick wins, content decay, cannibalisation, rank tracking, index monitoring and AI referral traffic.
cromojo.com
Monitors URLs in Google, flags indexing issues and bulk-indexes new pages; renamed Cromojo in November 2025.
Finds high-traffic keywords a site already ranks for so its content can be improved; the domain now redirects to Cromojo.
Course teaching programmatic SEO with real-world examples, which he built and later sold.
No tools in common in their publicly listed stacks. See the indie maker tech stack.
No stack shared publicly.
Damon Chen self-reports $1.3M ARR (Testimonial.to + PDF.ai) (as of 2024) and Ian Nuttall self-reports $100K ARR (Keyword Metrics + URL Monitor) (as of 2024). By these self-reported figures, Damon Chen's reported monthly revenue is higher. Figures are unaudited and may cover different periods or businesses, so treat them as rough indicators.
Damon Chen has 8 products listed (including Testimonial.to, PDF.ai and Chat.sh); Ian Nuttall has 4 products listed (including ian.is SEO tools, URL Monitor (now Cromojo) and Keyword Metrics).
Damon Chen hasn't shared a stack. Ian Nuttall uses Cursor, Claude Code, Codex and Google Search Console API. They don't list any tools in common.
Damon Chen: San Jose, United States. Ian Nuttall: not listed.
Damon Chen started in 2020 (6 years indie); Ian Nuttall started in 2005 (21 years indie).
Yes, both are listed as bootstrapped founders on IndieMakerList.
Read the full story, timeline and links on Damon Chen's profile and Ian Nuttall's profile.