notes from the build.

Visa RDR fee explained: why you pay a dispute fee even when the refund is automatic (Dodo Payments)

Dodo Payments reversed $30 dispute fee & charged $18 Visa RDR fee instead. What Rapid Dispute Resolution is, why still cost, how to check

Cloudflare Bot Fight Mode was blocking AI crawlers like Claude-User on my site

Claude-User: 0 allowed, 28 unsuccessful. One toggle, and what the dashboard was really telling me.

Best GitHub repos for Claude Code in 2026: Superpowers, Caveman, claude-mem and more

The most-starred GitHub repos for Claude Code in October 2026: what Superpowers & Agent Reach do, how to install each, and which to skip.

Build an MCP server over HTTP for Claude Code and Cursor: an icon search example

A tiny MCP server over plain HTTP, so AI coding agents stop inventing SVGs.

I found 60 GB of Xcode leftovers on my Mac. Here’s where it hides and how to get it back safely

Simulators, DerivedData, Device Support, package caches and archives: what each one is, what’s safe to delete, and the exact commands.

A $30 Dispute on a $4.99 App: Why I Switched From Dodo Payments to Polar

Real fees, real numbers, and the 8 surprises I hit moving my Mac app’s payments before launch.

I Built a Pet That Panics When My Mac Is Stressed. It Never Panicked.

What building Puff, a $4.99 menu bar pet, taught me about Apple Silicon, tiny apps, and selling a toy.

I Built a Free Chrome Extension That Rips SVGs, Fonts and Colors From Any Site

Most design tools ask you to pay before you even know if they solve your problem. I got tired of that, so I built AssetPullKit as a free Chrome extension instead.

How to Track Conference Leads

Collecting leads at a conference is the easy part. Actually tracking them — without duplicates, without losing attribution, without half of them going stale before follow-up — is where most teams quietly fail. Here's a system that holds up.

cardlyx · 2 min read

How to Measure Event ROI

"The conference went well" isn't a metric. Here's how to actually calculate whether an event was worth the spend — the formulas that matter, and what data you need to run them.

cardlyx · 0.03 min read

How to Collect Leads at Trade Shows Without Paper Business Cards

A fishbowl of business cards on your booth table isn't a lead capture strategy — it's a pile you'll sort through weeks later, if at all. Here's a practical, paper-free way to run a booth and know exactly what it generated.

cardlyx · 4 min read

Event Lead Retrieval Software: What It Actually Does (and Where Cardlyx Fits)

"Lead retrieval software" usually means scanning attendee badges at someone else's trade show. Here's what that category actually covers, and how Cardlyx's Events feature solves a related but different problem — for your own team's booth.

cardlyx · 3 min read

Digital Business Cards for Events & Conferences

A trade show generates dozens of conversations across your whole team — and normally, no easy way to know which ones actually turned into leads. Here's how Cardlyx's Events feature tracks it all automatically.

cardlyx · 3 min read

Cardlyx vs Linktree: Which One Should Freelancers and Creators Actually Use?

Linktree organizes your links. It doesn't capture anything back — and it takes a cut of your sales. Here's how it actually compares to Cardlyx if you're using it as a stand-in for a professional card.

cardlyx · 3 min read

Cardlyx vs Wave Connect: Full Comparison (Pricing, Features, Teams, Lead Capture)

Wave Connect's free plan includes analytics and contact export — genuinely more generous than most competitors. Here's the full breakdown against Cardlyx, including where Wave's free tier still comes up short.

cardlyx · 2 min read

Cardlyx vs Lynkle: Full Comparison (Pricing, Features, Teams, Lead Capture)

Lynkle has a genuinely strong free plan and a nice privacy angle — but lead capture is locked behind its paid tier. Here's the full breakdown against Cardlyx.

cardlyx · 2 min read

Cardlyx vs Linq: Full Comparison (Pricing, Features, Teams, Lead Capture)

Linq raised $20M in 2026 to pivot toward AI messaging infrastructure — and its digital business card product has been effectively sidelined as a result. Here's what that means if you're evaluating it against Cardlyx.

cardlyx · 2 min read

Cardlyx vs Popl: Full Comparison (Pricing, Features, Teams, Lead Capture)

Popl has repositioned as an enterprise event lead-capture platform, and its free plan reflects that — a handful of contacts, heavy branding, and usage-based fees once you scale up. Here's the full breakdown against Cardlyx.

cardlyx · 2 min read

Cardlyx vs Blinq: Full Comparison (Pricing, Features, Teams, Lead Capture)

Blinq is cheap and well-reviewed, with a strong free tier and Apple Wallet support. But its Business plan has a 5-seat minimum, and lead capture still isn't built into the core sharing flow. Here's the full breakdown against Cardlyx.

cardlyx · 3 min read

Cardlyx vs HiHello: Full Comparison (Pricing, Features, Teams, Lead Capture)

HiHello is one of the most established digital business card platforms — but its lead capture is an optional add-on, its free plan caps you at limited scans, and team pricing scales per user fast. Here's the full breakdown against Cardlyx.

cardlyx · 3 min read

Best Digital Business Card Apps for iPhone & Android (2026)

Not every digital business card app works the same on iPhone and Android. Here's how the top platforms compare on device compatibility, sharing methods, and what actually matters depending on which phone you carry.

cardlyx · 3 min read

Digital Business Card vs Physical Business Card: Which Should You Use in 2026

Still ordering boxes of printed cards? Here's an honest breakdown of when a digital business card genuinely beats a physical one — and the few situations where paper still holds up.

cardlyx · 0.03 min read

Digital Business Card for Email Signatures: How to Add Yours

Your email signature gets seen dozens of times a week — far more than any conference badge. Here's how to turn it into a lead-capturing digital card instead of a static block of text.

cardlyx · 2 min read

How to Create a Digital Business Card on iPhone (Step-by-Step)

No app to download, no desktop required. Here's exactly how to build and share your first digital business card on iPhone in under a minute, straight from Safari.

cardlyx · 3 min read

Best Digital Business Card Apps in 2026

A fair, feature-by-feature look at the top digital business card apps in 2026 — what each one actually does well, where they fall short, and which one fits your specific use case.

cardlyx · 3 min read

Digital Business Card Networking Trends to Watch in 2026

Adoption is accelerating, NFC is pulling ahead of QR, and lead capture is becoming the expectation rather than the exception. Here's what's actually shaping digital networking in 2026.

cardlyx · 4 min read

Digital Business Card for Educators and Conference Speakers

A great talk ends with a room full of people who want to stay in touch — and no easy way to make that happen. Here's how educators and speakers turn a closing slide into a list of real leads instead of a line of business cards nobody reads.

cardlyx · 3 min read

Digital Business Card for Healthcare Professionals (What Actually Matters)

Every healthcare digital card platform claims "HIPAA-friendly." Here's what actually matters for doctors, nurses, and clinicians — and where that compliance language is doing more marketing than protecting.

cardlyx · 3 min read

Digital Business Card for Freelancers and Creators: Building a Portfolio Link-in-Bio

If you're paying for Linktree and separately handing out business cards, you're managing two tools that could be one. Here's how to build a single digital card that works as your portfolio hub, link-in-bio, and lead capture tool at once.

cardlyx · 2.22 min read

Digital Business Card for Founders & Startup Networking

Pitch events, demo days, investor coffee chats — founders are always networking. Here's how a digital business card with lead capture turns every one of those conversations into a tracked follow-up instead of a business card someone loses.

cardlyx · 3 min read

Digital Business Card for Freelancers: Free vs Paid Options

Most "free" digital business cards come with a catch — scan limits, one locked card, or paywalled analytics. Here's an honest look at what free actually means across platforms, and where Cardlyx's free plan stands.

cardlyx · 3 min read

How Lead Capture Digital Business Cards Work (and Why Most Don't Have It)

Most digital business cards let you share your contact info. Few actually capture theirs. Here's exactly how lead capture works, why most cards treat it as an afterthought, and what to look for if lead generation is the point.

cardlyx · 3 min read

Best Digital Business Card for Sales Teams in 2026

Paper cards get thrown away, forgotten, or never make it into the CRM. Here's how sales teams and SMBs use digital business cards with lead capture to stop losing prospects between the handshake and the follow-up.

cardlyx · 3 min read

Digital Business Card for Real Estate Agents (Lead Capture Built In)

Open houses, showings, and networking events generate contacts — most agents lose half of them. Here's how a digital business card with built-in lead capture keeps every prospect in your CRM.

cardlyx · 3 min read

HiHello Alternatives With Lead Capture (2026 Guide)

Looking for a HiHello alternative that actually captures leads, not just contacts? Here's how Cardlyx, Blinq, Popl, Linq, and Wave compare on lead capture, CRM sync, and pricing.

cardlyx · 0.03 min read

GPT-5.4: The Most Powerful AI Model Yet — Features, Real-World Use Cases, and How Developers Can Use It

GPT-5.4 is the newest frontier AI model designed for complex reasoning, coding, automation, and professional workflows. This guide explains its capabilities, real-world use cases, and how developers and businesses can leverage GPT-5.4 to build smarter applications and AI-powered tools.

mdkadiwal · 0.34 min read

PLAYBOOK #1: THE WEIGHTLESS STRATEGY

The complete Weightless Strategy playbook: build massive demand before launching your SaaS. Real case study showing how to reach $61K MRR in 53 days using email waitlists, edgy sales content, scarcity, and strategic pricing.

mdkadiwal · 11.12 min read

The Fastest AI Photo Editor for Creators and Businesses

photofy · 0.27 min read

The Secret Weapon for Startup Success Nobody's Talking About

Build in public. You'll surprise yourself with what becomes possible.

mdkadiwal · 4.05 min read

How My Reddit Post Went Viral: The Complete Guide to Getting 500 Karma in 30 Days

A Step-by-Step Playbook for Building in Public and Gaining Real Traction on Reddit

mdkadiwal · 13.21 min read

How to Get 500 Karma on Reddit in 30 Days: Complete Guide to Going Viral | Build in Public Strategy

Learn the exact formula that generated 49,000 views and 108 upvotes on Reddit.

The JavaScript Framework That Actually Scales

React Is Powerful. But Building Production Apps Is Hard

mdkadiwal · 2.28 min read

The Solo Founder's Marketing Paradox 🎯

You've built something great. It works. Your code is clean, your product solves a real problem, and you genuinely believe it has potential.

mdkadiwal · 3.93 min read

Building Chrome Extensions That People Love: TryFitNow Case Study

Complete case study on building TryFitNow, an AI-powered virtual try-on Chrome extension. Learn practical strategies for Chrome extension development, Web Store SEO, user growth, and creating products people genuinely love.

tryfitnow · 0.67 min read

Building ScanZen: How I Built an AI Product Scanner Using Image Recognition

Discover how I built ScanZen, an AI product scanner using image recognition and OCR to help people understand medicine labels, ingredients, and product information instantly through their phone camera.

scanzen · 10.58 min read