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3,873

UX Case Studies

69 published, ≈ 50 hours each

UX Bites

488 published, ≈ 20 minutes each

UX Glossary

52 published, ≈ 5 hours each

Estimated research:3,873 hours

That's about 516.40 working days

hours of analysis with BFM+

Learning UX shouldn’t be boring—it should be full of memes and bad jokes.

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100 UX Bites

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Full access to the growing library of 69 case studies, UX Bites and UX Glossary

Exclusive cheatsheets and quizzes

Powerful filters and sorting

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billed annually

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Share UX Bites, ideas and UX experiments with your team

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"Second to none"

All I need in one subscription

There are hundreds of UX resources online bit it's hard to find high quality ones like BFM+. I have all I need to improve as a UX designer in just one subscription.

- Carlos Viciana

Second to none

The depth of insight is second to none - and it is clear that actual thought and serious research has gone into them rather than simply rattling off the standard UX-by-the-numbers tropes.

- Daniel

Entertaining and informative

Entertaining and informative. More memes please.

- Anonymous

Insights we can use

BFM+ is an archive of small insights which we can then use in our product.

- Alex

I recommend you a lot

Been following you a long time and learned a lot. Awesome stuff, always on point and I recommend you a lot.

- Fichte42

Very helpful heuristics

I work in a financial institution and there's relevant content for me, with general UX advice and heuristics that are very helpful.

- Anonymous

Stayed for the memes

Came for the UX research, stayed for the memes.

- Matt B

Unique blend of psychology insights

A unique blend of psychology insights and real-world examples not only demystifies app flows, but also cultivates a clear understanding of why some things work while others don't.

- Marc Schmitt

The best UX case studies

The best UX case studies on internet.

- Vadim

So fun to read

I've never encountered a UX design blog that is so fun to read. Helpful for those just starting in UX to understand basics; also helpful for experienced designers to stay in the loop.

- Anna Zelenskaya

I learn something new every time

Vibe of the newsletters and articles makes me feel like you're a friend. Succinct, clear and insightful: I learn something new every time I read your work!

- Li-Lian

A gold mine

The case studies are a gold mine. They help me think more critically when designing and the UX Bites show specific examples of great UX in the wild.

- Anonymous

The best learning tool

Probably the best learning tool in my arsenal. The case studies have the right amount of detail with the ux bites being an excellent addition.

- Niko Xydakis

Truly unique

The long case studies are truly unique pieces in this industry of fast-paced pop-psychology.

- Mark Buskbjerg

A game-changer

Honestly, it's a game-changer. BFM has a way of making the tricky parts of UX design super approachable and fun to learn. Amazing way to deepen your knowledge in UX design.

- Matija

It's magic!

BFM+ is that place I can go to read for fun and come out with valuable inspiration that translates into practical action items for my own projects.

- Diego Gallovich

Millions of pounds in new business

I’ve incorporated a handful of Built for Mars' recommendations into my product roadmap. These insights enabled my team to secure millions of pounds in new business.

- Adilson Santos

*chefs kiss

The way you've taken the UX concepts, summarised them, and seamlessly docked them with the case studies and bites is *chefs kiss*.

- Richard Boyd

It's magic!

BFM+ is that place I can go to read for fun and come out with valuable inspiration that translates into practical action items for my own projects.

- Diego Gallovich

The best learning tool

Probably the best learning tool in my arsenal. The case studies have the right amount of detail with the ux bites being an excellent addition.

- Niko Xydakis

Millions of pounds in new business

I’ve incorporated a handful of Built for Mars' recommendations into my product roadmap. These insights enabled my team to secure millions of pounds in new business.

- Adilson Santos

So fun to read

I've never encountered a UX design blog that is so fun to read. Helpful for those just starting in UX to understand basics; also helpful for experienced designers to stay in the loop.

- Anna Zelenskaya

Stayed for the memes

Came for the UX research, stayed for the memes.

- Matt B

Insights we can use

BFM+ is an archive of small insights which we can then use in our product.

- Alex

A game-changer

Honestly, it's a game-changer. BFM has a way of making the tricky parts of UX design super approachable and fun to learn. Amazing way to deepen your knowledge in UX design.

- Matija

A gold mine

The case studies are a gold mine. They help me think more critically when designing and the UX Bites show specific examples of great UX in the wild.

- Anonymous

The best UX case studies

The best UX case studies on internet.

- Vadim

All I need in one subscription

There are hundreds of UX resources online bit it's hard to find high quality ones like BFM+. I have all I need to improve as a UX designer in just one subscription.

- Carlos Viciana

Very helpful heuristics

I work in a financial institution and there's relevant content for me, with general UX advice and heuristics that are very helpful.

- Anonymous

Entertaining and informative

Entertaining and informative. More memes please.

- Anonymous

Truly unique

The long case studies are truly unique pieces in this industry of fast-paced pop-psychology.

- Mark Buskbjerg

I learn something new every time

Vibe of the newsletters and articles makes me feel like you're a friend. Succinct, clear and insightful: I learn something new every time I read your work!

- Li-Lian

Second to none

The depth of insight is second to none - and it is clear that actual thought and serious research has gone into them rather than simply rattling off the standard UX-by-the-numbers tropes.

- Daniel

Unique blend of psychology insights

A unique blend of psychology insights and real-world examples not only demystifies app flows, but also cultivates a clear understanding of why some things work while others don't.

- Marc Schmitt

I recommend you a lot

Been following you a long time and learned a lot. Awesome stuff, always on point and I recommend you a lot.

- Fichte42

*chefs kiss

The way you've taken the UX concepts, summarised them, and seamlessly docked them with the case studies and bites is *chefs kiss*.

- Richard Boyd

It's magic!

BFM+ is that place I can go to read for fun and come out with valuable inspiration that translates into practical action items for my own projects.

- Diego Gallovich

The best learning tool

Probably the best learning tool in my arsenal. The case studies have the right amount of detail with the ux bites being an excellent addition.

- Niko Xydakis

Millions of pounds in new business

I’ve incorporated a handful of Built for Mars' recommendations into my product roadmap. These insights enabled my team to secure millions of pounds in new business.

- Adilson Santos

So fun to read

I've never encountered a UX design blog that is so fun to read. Helpful for those just starting in UX to understand basics; also helpful for experienced designers to stay in the loop.

- Anna Zelenskaya

Stayed for the memes

Came for the UX research, stayed for the memes.

- Matt B

Insights we can use

BFM+ is an archive of small insights which we can then use in our product.

- Alex

A game-changer

Honestly, it's a game-changer. BFM has a way of making the tricky parts of UX design super approachable and fun to learn. Amazing way to deepen your knowledge in UX design.

- Matija

All I need in one subscription

There are hundreds of UX resources online bit it's hard to find high quality ones like BFM+. I have all I need to improve as a UX designer in just one subscription.

- Carlos Viciana

A gold mine

The case studies are a gold mine. They help me think more critically when designing and the UX Bites show specific examples of great UX in the wild.

- Anonymous

The best UX case studies

The best UX case studies on internet.

- Vadim

Very helpful heuristics

I work in a financial institution and there's relevant content for me, with general UX advice and heuristics that are very helpful.

- Anonymous

Entertaining and informative

Entertaining and informative. More memes please.

- Anonymous

Truly unique

The long case studies are truly unique pieces in this industry of fast-paced pop-psychology.

- Mark Buskbjerg

I learn something new every time

Vibe of the newsletters and articles makes me feel like you're a friend. Succinct, clear and insightful: I learn something new every time I read your work!

- Li-Lian

Second to none

The depth of insight is second to none - and it is clear that actual thought and serious research has gone into them rather than simply rattling off the standard UX-by-the-numbers tropes.

- Daniel

Unique blend of psychology insights

A unique blend of psychology insights and real-world examples not only demystifies app flows, but also cultivates a clear understanding of why some things work while others don't.

- Marc Schmitt

I recommend you a lot

Been following you a long time and learned a lot. Awesome stuff, always on point and I recommend you a lot.

- Fichte42

*chefs kiss

The way you've taken the UX concepts, summarised them, and seamlessly docked them with the case studies and bites is *chefs kiss*.

- Richard Boyd

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Case Studies

Original UX case studies

A growing library of 69 original case studies, including mutli-chapter publications

All 69

Email alert for new studies

Email alerts the moment that new studies are released

Filters and sorting

Powerful ways of discovering new content, and quickly finding the articles you love

Inline UX psychology

Dive into UX psychology, without leaving the article

UX Bites

Feed of UX Bites

Browse the curated feed of bitesized UX interactions

Full archive

Newsletter of most recent bites

A summary of the most popular UX Bites emailed to you every 2 weeks

Cheatsheets newsletter

A deep dive into a specific product problem, once a month

Behind the Bite

Further analysis and context behind UX Bites, including motivations and possible impacts

Associated psychology

Understand the psychology behind each UX Bite (i.e., Default Bias)

Filters

Powerful filters including psychology, industry, impacts and UI components

UX Psychology

UX Glossary

A collection of 52 psychological biases, design principles and UX concepts

All 52

Basic summary and context

Learn the basics (i.e., summary and key principles)

Filters and sorting

A powerful way of learning about UX psychology

Deeper dive

A deeper dive into the psychology (e.g., history and other examples)

Product tips

Learn how to implement this principle or bias into your designs

Impacts

Understand how this is likely to be impacting your product, and why

References and resources

Including related UX Bites, case studies and trusted external resources

Features

Interactive quizzes

Test your knowledge with quizzes and exercises

Browse by 'unread'

A dynamic feed built to show you unread studies and Bites that you've not seen

Favourites and collections

Ability to save UX Bites and psychology to a collection

Team collections

Share UX Bites, experiments and ideas with a wider team.

Multiple seats for your team

"Premium" is one seat, to be used by one team member

3

Limited

Limited

100

Limited

Limited

Limited

Limited

All 69

Full archive

All 52

All 69

Full archive

All 52

Soon

10

"All I need in one subscription"

Case Studies

Unlock 69 (and growing) original studies

Carefully crafted analysis that you can trust, made palatable with memes. From teardowns to full industry benchmarks.

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UX Bites

Browse the library of UX Bites

A feed of the best UX interactions in the world, contextualised and organised for you to browse, sort, save and try yourself.

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Psychology

Unlock the UX glossary

With clear breakdowns of the concepts you'll actually want to use.

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Case Studies

Treat it like a UX course

Track progress, save studies and browse only new content.

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BFM+

Test your knowledge

Interactive UX quizzes and exercises.

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UX Bites

Monthly UX cheatsheets

Copy like a pro, with quick wins and implementation tips.

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UX Bites

Create collections

Build a roadmap of things to try.

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UX Bites

Unlock powerful filters

e.g., “How do the best FinTech products reduce Churn?

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FAQs

Who is this subscription designed for?

If you just want to read the new case studies as they're released, and occasionally browse a few UX Bites for pleasure, then you don't need to pay.

Just join the free newsletter.

---

Built for Mars Premium is designed for active product builders, who care deeply about finding their next 5% boost in conversion rates.

They'll want to:

Read, reference and benchmark against the entire library of case studies.

Use the powerful filters to find specific UX Bites, ideas and experiments (i.e., reducing churn for a FinTech product).

Dive deep into specific UX psychology, and understand all the potential impacts, with tips for implementation.

Is this worth the investment? (ROI?)

For context, I've privately worked with some of the best product teams in the world (via audits), and seen first-hand the UX changes that can create a real impact to a business.

For roughly $150 a year, you can access thousands of hours of UX research and analysis that I've refined over many years.

At $150, all you really need is one minor improvement (most teams would be able to find far more), to have a massively positive ROI.

Who are you? What do you know?

Hey, my name is Peter.

You can learn more about my story here, but in short; I've spent years working with some of the best product teams in the world.

I've been a UX consultant to Stripe, Google, Notion, Klarna, Intuit and hundreds more. I specialise in subtle and nuanced details, that help teams optimise their user experience.

I'm not retired from consulting (I'm only 30), in fact working with teams keeps me fresh. I'm running experiments and ideas on billions of users around the world.

I take what I learn, and publish it for you here (in a bite sized format).

How does this compare to a UX course?

Although I know courses are very popular, I've personally always struggled to engage with the format.

Instead, in my life, I've learned far more by reading articles, research, YouTube videos and tips at my own pace, without an "on-rails" programme.

The content on Built for Mars could have easily been a "course", but instead I wanted to build a flexible library that puts you in control:

  • Decide what interests you, and focus on that particular area (i.e., UX psychology, experiments, best practice).
  • Ramp up (and down) your commitment based on life, work and your capacity to engage.
  • Not invest $1,000s up front. You can start for as little as £2 per week.

Billing & payments

Can I expense this through my business?

Absolutely, most product teams even have an internal budget for educational resources (i.e., research, courses, user testing).

Do you offer discounts for students and educators?

Yes, simply email me from your educator (or institutional) email address with a bit of context about how you're using Built for Mars, and if you're approved, I'll send you a discount code.

What's the refund policy?

It's simple; if you change your mind and want your money back, email me on help@builtformars.com within 7 days of purchase.

You'll be refunded in full, regardless of which package you purchased.