Your
Learning
Autopilot
Dexter teaches you to think better.
Learn the most powerful mental models,
used by top leaders and operators,
to make better product decisions,
in just 5 minutes a day.
No courses. No dashboards. Just bite-sized, personalized learning delivered where you already are — your text messages.
Used by product managers at
Why learn mental models?
94% of PMs express a strong desire for continued learning.
Yet only 25% say they get enough time to learn.
Most PMs don’t lack skill or drive.
They lack time.
Time is the one resource you can’t get more of — no matter how smart, senior, or scrappy you are.
So what separates good PMs from great ones?
Leverage.
Leverage doesn’t mean working harder. It means building systems. Using better tools. Thinking in frameworks, not from scratch.
The best cognitive tools we know of?
Mental models.
Mental models are how you work smarter. Prioritize faster, make clearer decisions, and lead with confidence — especially when everything is on fire.
They’re not just abstract concepts. They’re thinking infrastructure.
And if you don’t have that infrastructure, your brain becomes the bottleneck.
Dexter helps you build that — in minutes a day.
Simply put, you'll learn the most powerful thinking shortcuts used by successful people to go from chaos to clarity.
Learn to break down complexity into manageable pieces
See insightful patterns and relationships that others miss
Improve your ability to deliver successful outcomes
Learn how to think (infinite) > not what to think (limited)
Consider Amazon's product development process. Instead of starting with features, they use a mental model called 'Working Backwards'.
They write a press release first — imagining the finished product's impact on customers. This forces clear thinking about product value and customer outcomes before diving into solutions.
Dexter was made for PMs who want to grow
in three foundational pillars of product excellence
01
DECISION MAKING
02
PRODUCT
STRATEGY
03
LEADERSHIP
Make better decisions, faster with models used by top business leaders
Elevate from tactical execution to strategic direction
Communicate confidently and get buy-in from stakeholders at every level
You'll learn mental models like
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Second-Order Thinking: Anticipate consequences that others miss
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Reversible vs. Irreversible Decisions: Know when to move fast and when to be cautious
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Regret Minimization Framework: Jeff Bezos' approach to making tough choices
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First Principles Thinking: Break down complex problems into fundamental truths
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Jobs To Be Done: Understand the real reasons customers use your product
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Working Backward: Amazon's method for developing successful products
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Pyramid Principle: Structure recommendations for executive approval
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SCQA Framework: Situation, Complication, Question, Answer for clarity
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Minto Framework: Present ideas in a logical hierarchy that resonates
How Dexter works
1. Quick Sign-Up
Share your role, industry, and personal interests so Dexter can personalize learning to you
2. Weekly Focus
Each week, Dexter introduces you to a powerful mental model
3. Daily Micro-Lessons
Receive short, engaging text messages which deepen your understanding
4. Personalized Learning
Ask questions, get personalized examples, and apply models to your specific challenges
5. Spaced Repetition
Follow-up messages reinforce your understanding at optimal intervals
6. Weekly Assessment
Quick check-ins ensure you've mastered each concept before moving on
Why it works
Dexter uses research-backed learning strategies, from leading institutions, to help you learn quickly and retain knowledge
⏰
Built for Busy People
No courses to complete or books to forget - just text Dexter back whenever you have 5 minutes between meetings.
📈
Designed for Growth
Dexter helps you master one powerful concept per week —
so you actually retain it, apply it, and get sharper over time.
🧠
Backed by Learning Science
Using spaced repetition, active recall, interleaving and other cognitive strategies, Dexter
makes knowledge stick.
🦄
Personalized for Your Life & Work
Every lesson adapts to your background, profession, and interests — so it’s always relevant and easy to apply.
100X ROI. Really
At just $10 per month (or $96/year), Dexter costs less than a single conference or course.
Yet the mental models you'll master routinely lead to promotions worth $10,000+ annually.
Great Thinkers on Mental Models
“You can train your brain to think better. One of the best ways to do this is to expand the set of mental models you use to think.”
James Clear
Author, #1 New York Times Bestseller Atomic Habits
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How is Dexter different from product courses, books, or podcasts?Most content is passive — you consume it, forget 90% of it within a week, and move on. Courses and books also demand a lot of time, and average course completion rates are under 10%. Dexter flips that model. It uses proven learning science — like spaced repetition, active recall, and personalization — to help you retain and apply what you learn. In just a few minutes a day, Dexter fits into your life and makes mental models stick, so they actually shape how you think and work.
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Will I really learn in just 5 minutes a day?Yes—because it's not about time spent, it's about consistency and application. Dexter's method ensures you're practicing and applying concepts immediately in your real work, not just passively consuming information. Many PMs report noticing a difference in their decision-making clarity within the first two weeks. Kaizen compounds over time.
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What's included in the curriculum?Dexter provides a comprehensive 52-week curriculum covering essential mental models and cognitive biases organized into categories: 1) Decision-Making (e.g. Second-Order Thinking, Bayesian Updating, Expected Value) 2) Product Strategy (e.g. Inversion, Chesterton's Fence, Lindy Effect) 3) Leadership (e.g. Hanlon's Razor, Tribal Signaling, Pygmalion Effect) Each week builds upon previous concepts, creating a progressive learning journey that transforms how you think.
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How do I cancel?You can text the word STOP to Dexter or email us at support@meetdexter.com to cancel your subscription.
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Why should I use Dexter instead of just asking ChatGPT to teach me?While LLMs like ChatGPT are incredibly powerful, they’re not designed to help you actually retain and apply what you learn. Here’s why Dexter is better: 🧠 Curated Curriculum: Dexter teaches you one powerful mental model per week, reinforced through daily check-ins, follow-ups, and quizzes. LLMs give you one-shot answers with no follow-up. 🎯 Personalized to You: Dexter adapts each lesson to your background, profession, and interests which improves engagement and retention. LLMs require you to prompt them. 🤔 Built for Retention: Dexter uses proven techniques like active recall, elaborative rehearsal, and interleaving—methods scientifically shown to improve long-term memory. LLMs don’t structure learning this way. ⏳ Zero Setup Time: Dexter delivers short, focused lessons via SMS so you can learn in 5 minutes a day—eliminating the friction of initiating and organizing your own learning with an LLM. ChatGPT gives you information. Dexter turns it into lasting knowledge.
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Is there a free trial?We don't offer a free trial because our learning methodology is based on consistent, sustained learning over time. The compounding ROI is very high. Dexter is $10/month — cancel anytime, no questions asked.
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Can I skip a mental model if I already know it?Not yet. Even if you’re familiar with a mental model, Dexter guides you through applying it deeply and consistently across different situations. Knowing a model isn’t the same as using it fluently — and that takes deliberate practice. Many users discover new layers of insight or uncover blind spots they didn’t know they had. Skip functionality may come later, but for now, every model is a chance to sharpen your edge.