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Matthew L.

@matthewlls

Built/founded LikelySpurious.com and Polymapp.com. Insights on bootstrapping, development, and occasionally data science.

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Latest posts by Matthew L. @matthewlls

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Polym: Remember What You Learn | Product Hunt Polym is an audio app incorporating active learning for the retention of foundational knowledge, including statistics, logic, economics, AI, history, and more. The app utilizes retrieval practice, spa...

Today Polym launches on Product Hunt.

A culmination of 15 years of exploring every major online learning solution & extensive research into learning science to create a platform that tries to incorporate the best from each while filling in their gaps.

❤️ Support: www.producthunt.com/products/polym

02.11.2025 16:01 👍 2 🔁 0 💬 0 📌 0

Any mobile app developers use different paywalls for iOS and Android? Seems they have different requirements and would rather not change my copy on iOS to meet Android.

04.08.2025 18:12 👍 0 🔁 0 💬 0 📌 0
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Retain what you learn.

19.07.2025 21:36 👍 3 🔁 0 💬 0 📌 0
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4 Research-Backed Learning Strategies for Improving Retention & Recall In recent decades, research has significantly advanced our understanding of how people learn most effectively. Yet in practice, our…

4 Research-Backed Learning Strategies for Improving Retention & Recall: medium.com/@matt.lucich...

07.06.2025 16:07 👍 6 🔁 0 💬 0 📌 0

Gathering raw data vs interpreting raw data.

28.05.2025 00:01 👍 4 🔁 0 💬 0 📌 0

Agreed 🫡

25.04.2025 02:20 👍 3 🔁 0 💬 1 📌 0

There’s a lot of techniques to improve knowledge retention, though I find these 4 are the most practical to continuously implement

20.04.2025 12:59 👍 7 🔁 0 💬 0 📌 0

Underrated framework for viewing relationships

30.03.2025 20:06 👍 8 🔁 0 💬 0 📌 0

Potential biases to look out for in causal inference

14.03.2025 18:57 👍 6 🔁 1 💬 0 📌 0

A refresher on one of my favorites: Simpson’s Paradox

04.03.2025 04:06 👍 4 🔁 0 💬 0 📌 0

Why Conjoint Analysis Matters

It doesn’t just tell you what customers like—it reveals how much they value each feature.

Used in:
✔️ Airlines: Legroom vs. Ticket Price vs. Wi-Fi
✔️ Smartphones: Camera Quality vs. Battery Life vs. Price
✔️ Streaming Services: Ad-free vs. More Content vs. Lower Cost

25.02.2025 14:12 👍 0 🔁 0 💬 0 📌 0

Step 5: Optimize Product Offerings

With these insights, businesses can refine products, pricing, and marketing based on what actually drives customer choices.

Example: A phone brand can decide whether to focus on battery life or camera quality.

25.02.2025 14:12 👍 0 🔁 0 💬 1 📌 0

Step 4: Use Statistical Models

Advanced models (like Hierarchical Bayesian or Logit models) analyze responses to determine:
✅ The relative importance of each feature
✅ How much customers are willing to pay for each attribute

25.02.2025 14:12 👍 0 🔁 0 💬 1 📌 0

Step 3: Collect Responses

Surveys gather data from a representative sample. Instead of ranking preferences, consumers make real-world trade-offs—revealing what matters most.

25.02.2025 14:12 👍 0 🔁 0 💬 1 📌 0

Step 2: Design Choice Scenarios

Customers see different product combinations & must pick their preferred option.

Example: A travel company may ask:
✈️ Option A: $200 ticket, extra legroom, no Wi-Fi
✈️ Option B: $180 ticket, standard legroom, free Wi-Fi

25.02.2025 14:12 👍 0 🔁 0 💬 1 📌 0

Step 1: Define Attributes & Levels

• Attributes = Product features (e.g., price, battery life, screen size).
• Levels = Variations of each attribute (e.g., price: $599, $799, $999).

These define what customers will compare.

25.02.2025 14:12 👍 0 🔁 0 💬 1 📌 0

Conjoint analysis is a powerful technique that measures consumer preferences by simulating real-world decision-making. Instead of asking what customers want, it presents trade-offs between product features.

Here’s how it works 👇

25.02.2025 14:12 👍 3 🔁 0 💬 1 📌 0

The evolution of marketing in 5 stages:
1️⃣ Production Concept: Efficiency is king.
2️⃣ Product Concept: Quality above all.
3️⃣ Sales Concept: Persuasion dominates.
4️⃣ Marketing Concept: Customer-first focus.
5️⃣ Societal Marketing: Responsibility meets strategy.

20.02.2025 15:13 👍 6 🔁 0 💬 0 📌 0
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Interleaving Practice - Humans vs. AI: Seeing Patterns That Aren’t There

20.02.2025 01:14 👍 6 🔁 1 💬 0 📌 0

Honing my infographic skills at the moment

18.02.2025 03:16 👍 2 🔁 0 💬 0 📌 0
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FYI I get this even though I granted location access while using the app. I initially gave less access (once, not precise) but fixed it and still see this after relaunching

18.02.2025 02:53 👍 0 🔁 0 💬 1 📌 0

That blog post is great, appreciate it!

15.02.2025 10:55 👍 1 🔁 0 💬 0 📌 0
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Just started using PostHog (@posthog.com) for my mobile app. Anyone recommend particular insights/views to monitor?

14.02.2025 14:12 👍 3 🔁 0 💬 1 📌 0

Late to this one but just finishing Made to Stick. Great read for indie hackers on the marketing front.

13.02.2025 03:26 👍 2 🔁 0 💬 0 📌 0

5 Ways Entrepreneurs Identify Opportunities (Schumpeter’s framework):
• Develop a new market for an existing product.
• Find a cheaper supply of resources.
• Use existing tech to improve an old product.
• Use existing tech to create a new product.
• Use new tech to create a new product.

11.02.2025 15:12 👍 4 🔁 1 💬 0 📌 0

Found the boilerplate for my react native app essential. Made integrations with payments, push notifications, analytics an afterthought. I don’t see cursor understanding how to best place/implement those in a complex app.

05.02.2025 13:35 👍 5 🔁 0 💬 0 📌 0
Introduction - Polym: An audio app for retention
Introduction - Polym: An audio app for retention YouTube video by Polym

Just launched my first mobile app, an audio app focused on knowledge retention and recall. Check it out!
youtu.be/F6t_0i7vNyk?...

01.02.2025 18:51 👍 7 🔁 0 💬 1 📌 0

Anyone else recently launch an iOS app and is interested in being mutual beta testers? We can review each other's apps.

01.02.2025 18:09 👍 3 🔁 0 💬 0 📌 0

Think about this quite often

31.01.2025 13:43 👍 1 🔁 0 💬 0 📌 0

The 4 characteristics of goods vs. services: Tangibility, perishability, separability, and standardization. Understanding these helps craft better customer solutions.

28.01.2025 20:31 👍 2 🔁 1 💬 0 📌 0