Testimonial.to
testimonial.to
Collect, manage and embed video and text testimonials from customers.
$800K ARR
diff ~/p/damon-chen ~/p/john-rush
Damon Chen vs John Rush
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
@damonchen United States
Damon Chen vs John Rush at a glance
Both Damon Chen and John Rush are bootstrapped, build in public, have sold at least one product and are serial makers. They overlap in SaaS Founders, AI Builders and Marketing & SEO Tools. Damon Chen has 8 products listed on IndieMakerList vs John Rush's 23. Damon has sold 1 product and John the same number. On revenue, Damon self-reports $1.3M ARR (Testimonial.to + PDF.ai) (as of 2024) and John $3M/yr (as of 2025). On X, Damon has about 99K followers and John about 118K.
Side-by-side comparison
- Based in
- Damon Chen: San Jose, United States
- John Rush: —
- Started
- Damon Chen: 2020 (6 yrs indie)
- John Rush: —
- Revenue (self-reported)
- Damon Chen: $1.3M ARR (Testimonial.to + PDF.ai)self-reported, as of 2024 · source for Damon Chen's revenue
- John Rush: $3M/yrself-reported, as of 2025 · source for John Rush's revenue
- Products listed
- Damon Chen: 8
- John Rush: 23
- Product status
- Damon Chen: 7 active · 1 acquired
- John Rush: 22 active · 1 acquired
- X followers
- Damon Chen: 99K
- John Rush: 118K
- Categories
- Damon Chen: SaaS FoundersAI BuildersMarketing & SEO Tools
- John Rush: SaaS FoundersDirectory MakersAI BuildersMarketing & SEO Tools
- Style
- Damon Chen: bootstrappedbuilds in publicexitedserial maker
- John Rush: bootstrappedbuilds in publicexitedserial maker
- Courses & resources
- Damon Chen: 1
- John Rush: 4
Revenue figures are self-reported by each maker and not audited; dates and scope differ. Highlighted categories are shared by both.
Top products
PDF.ai
pdf.ai
AI tool to chat with, analyze and work with PDF documents; acquired by Damon for about $20K and grown from there.
$500K ARR
Chat.sh
chat.sh
Help center that answers customer questions directly, citing the pages it used.
PDFgen
pdfgen.com
Generate PDF documents with AI.
Unicorn Platform
unicornplatform.com
Simple website, blog and directory builder for busy founders. 10,000+ directories have been built on it.
SEObot
seobotai.com
Fully autonomous SEO robot with AI agents that researches keywords and writes, publishes and interlinks blog articles.
ListingBott
listingbott.com
Lists your product on hundreds of relevant directories in one click to earn backlinks and domain rating.
DevHunt
devhunt.org
The launchpad for developer tools — 1,000+ dev tools launched and 200,000+ developers visiting.
Tech stack
No tools in common in their publicly listed stacks. See the indie maker tech stack.
No stack shared publicly.
Unicorn PlatformNext.jsMarsXAI agents
How they build
- Start small and cheap, validate with early lifetime deals, then reinvest.
- Buying a promising product can beat building from scratch.
- Premium, memorable domains are a real growth lever.
- Listen to support tickets; they reveal what to build next.
- Distribution beats building: spend more time on SEO and content than on code and design.
- Start SEO on day one — it takes 3–6 months to compound.
- Launch many small bets, at most a week each, and cross-link them.
- Stay founder-only until traction; skip hiring, outsourcing and paid design before $10k MRR.
- Talk like a human on social media and share both wins and failures.
Learn from Damon and John
Damon Chen vs John Rush FAQ
Who makes more money, Damon Chen or John Rush?
Damon Chen self-reports $1.3M ARR (Testimonial.to + PDF.ai) (as of 2024) and John Rush self-reports $3M/yr (as of 2025). By these self-reported figures, John Rush's reported monthly revenue is higher. Figures are unaudited and may cover different periods or businesses, so treat them as rough indicators.
Who has built more products, Damon Chen or John Rush?
Damon Chen has 8 products listed (including Testimonial.to, PDF.ai and Chat.sh); John Rush has 23 products listed (including Unicorn Platform, SEObot and ListingBott).
What tech stack do Damon Chen and John Rush use?
Damon Chen hasn't shared a stack. John Rush uses Unicorn Platform, Next.js, MarsX and AI agents. They don't list any tools in common.
Where are Damon Chen and John Rush based?
Damon Chen: San Jose, United States. John Rush: not listed.
Who has been an indie maker longer, Damon Chen or John Rush?
Damon Chen started in 2020 (6 years indie); John Rush's start year isn't listed.
Are Damon Chen and John Rush bootstrapped?
Yes, both are listed as bootstrapped founders on IndieMakerList.
Full profiles
Read the full story, timeline and links on Damon Chen's profile and John Rush's profile.
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