Built by a builder.
For smarter shoppers.
Caleb King built newsroom infrastructure at Forbes that served 100 million monthly readers. He knows what it means to build systems at scale — and what it means when the incumbent gets complacent.
When PayPal acquired Honey for $4 billion and immediately started deceiving users, the market opened. EchoCart is the honest, proactive alternative — an AI that works for the shopper, not the advertiser.
We monitor 1,000+ retailers continuously, apply coupons automatically, and alert you before you overpay. No credit card bias. No affiliate dark patterns. Just savings.
Caleb King
Founder & CEO
Ex-Engineering Director, Forbes
Price Drop Alert
AirPods Pro · Amazon
Coupon Auto-Applied
Nike Air Max 2024
Best Price Found
iPad Pro — 12 stores checked
TikTok Trend Spotted
Viral product · 12hrs early
5,000+
Beta users
As featured in




Trusted by Smart Shoppers

Alex Chen
Senior Engineer
Tech Startup
"As someone who's worked with complex systems at scale, I'm impressed by EchoCart's simplicity and effectiveness. Caleb has built something that actually works - it's saved me hundreds of dollars without any effort on my part."
Works seamlessly with your favorite stores
$150K+
Monthly savings
verified across beta users
5,000+
Beta users
growing 40% MoM
1,000+
Retailers tracked
continuously monitored
Four principles.
Non-negotiable.
No hidden agendas.
We earn affiliate commissions when you buy — we tell you that upfront. Every recommendation is ranked by price, not by who pays us most. Always.
Real-time, always.
Price data refreshed continuously. When a deal drops, you're notified in seconds — not hours. Our infrastructure monitors 1,000+ retailers around the clock.
Your data stays yours.
We never sell personal data. We never store payment information. We never manipulate recommendations for advertiser revenue. Full stop.
Measurable impact.
5,000+ beta users. $150K+ in verified savings per month. 40% month-over-month growth. We measure success in dollars back in your pocket.
Building EchoCart Solo
Leveraging years of engineering leadership experience to create AI-driven shopping solutions that save you time and money
Caleb King
Founder & CEO
Former Engineering Director at Forbes Magazine
Passionate about democratizing smart shopping through AI. Previously led engineering teams at Forbes Magazine, building scalable systems that served millions of readers. When not coding, you can find me analyzing shopping patterns and discovering the next big deal.