Proof of Concept
by David Hoangin 🪑 Design
free subscribers
Proof of Concept
About the Substack
Proof of Concept is a digital publication about creativity and experimentation for designers, builders, and entrepreneurs.
Free Subscription Benefits
- Weekly public posts and comment access
Paid Subcription Benefits
- Full archive of posts
- Quarterly subscriber-only posts
Paid Subscription Plans
- $100 a year
- $10 a month
About David Hoang
Investing and building tools that revolutionize the internet.
Subscriber Growth
The number of free subscribers for Proof of Concept over time since it was added to the directory.
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