ab-testing
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Leanplum Bet the App Could Change Its Mind
It began with two engineers, one wrong customer, and a useful embarrassment. Leanplum learned that the best experiment was not inside the app - it was deciding who the product was really for.
Unbounce Makes Every Click Earn Its Keep
The veteran landing-page builder still gives paid-media teams a fast lane from idea to experiment. Its new AI workflow is genuinely interesting, but the best features begin well above the tempting $29 entry price.
Convert.com Burned $400,000 Chasing Silicon Valley - Then Built the A/B Testing Company Its Rivals Left Behind
The founder spent the seed round chasing milestones, dismissed the team, and nearly lost a $100,000 domain. Convert survived by doing the unfashionable thing: serving the customers enterprise software forgot.
Makram Mansour Tests the Tiny Things - Because Five Pixels Can Cost $1 Million
The engineer-turned-product leader built experimentation systems at LinkedIn and Intuit. Now, at ID.me, he is applying the same habit of evidence to a trusted marketplace - one small decision at a time.
Morgan Davis Put the Store Floor on Trial
The former consultant and venture investor built MarketDial to give brick-and-mortar retailers a cheaper question: what if we tested the idea before betting every store on it?
The Retail World Runs on Guesses. MarketDial Sells Proof.
A pair of Salt Lake City founders - one ex-VC, one ex-McKinsey - built software that lets chains like Kum & Go, Dick's, and Woolworths test a store idea in a few dozen locations before betting the whole business on it. Then they took the incumbent to court.
The French Startup That Turned "Just Test It" Into a Global Experiment
For sixteen years AB Tasty sold brands a simple idea: stop arguing about what works on your website and test it. In January 2026 it merged with its biggest rival to prove the point at scale.
The Landing Page Tool You Need Depends on Your Traffic
Instapage maps sprawling ad portfolios. Unbounce learns which page variant suits each visitor. The right choice begins with the kind of complexity you actually have.
Stay AI
Stay AI is a Shopify-native subscription and retention platform that helps direct-to-consumer brands turn subscriptions into a growth channel rather than a simple billing tool. Founded in 2021 by ecommerce operators Gina Perrelli, Pierson Krass, and Taylor Cawiezell, the platform pairs a no-code, marketer-friendly customer portal with AI-driven churn prediction, smart dunning, cancellation surveys, and A/B testing. More than 500 brands - including OLIPOP, Magic Spoon, Momofuku, Lemme, and ARMRA - use Stay AI to reduce churn, lift recurring revenue, and increase customer lifetime value.
Maverick
Maverick is a San Francisco AI startup that generates personalized videos at scale for ecommerce brands. A merchant records one short base video, and Maverick's generative AI clones the voice and reshapes it to greet each customer by name across email flows - welcome, post-purchase, abandoned cart and more. The platform layers on inbox-placement optimization and automatic subject-line A/B testing, and plugs natively into Klaviyo. Founded in 2021 by Eitan Winer and Debarshi Chaudhuri, Maverick sells the idea that online shopping should feel a little more like being recognized by name at your neighborhood store.
Neha Mittal
Neha Mittal is the CEO and co-founder of JustAI (formerly Just Words), a Y Combinator W24 startup in San Francisco building an AI-first marketing engine that continuously writes, tests, and optimizes copy across email, push, SMS, and landing pages. Before founding the company in 2024, she led Retention and Growth product teams at Pinterest and Twitter, where a single notification tweak - changing "Elon tweeted" to "Elon just tweeted" - added roughly 800,000 users and planted the seed for her company. A computer engineer turned product leader, she earned a master's at UC Berkeley's School of Information and has raised about $2.2M in seed funding from Cloud Capital, Peak XV Partners, and Y Combinator.