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KazKN

Indie dev building data tools and MCP servers. TypeScript, web scraping, AI.

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How I shipped a cross-platform watch arbitrage tracker on Apify in 2 weeks (and the 5 production bugs that almost killed the launch)
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How I shipped a cross-platform watch arbitrage tracker on Apify in 2 weeks (and the 5 production bugs that almost killed the launch)

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9 min read
The 8 Best Web Crawlers for AI Knowledge Files in 2026 (Honest Comparison)
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The 8 Best Web Crawlers for AI Knowledge Files in 2026 (Honest Comparison)

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10 min read
How to Build a Custom GPT Knowledge Base in Under 5 Minutes (No Local Setup)
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How to Build a Custom GPT Knowledge Base in Under 5 Minutes (No Local Setup)

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8 min read
How I Built a Hosted Web-Crawler-to-Knowledge-File Pipeline (and Shipped It as an MCP Server in 6 Weeks)
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How I Built a Hosted Web-Crawler-to-Knowledge-File Pipeline (and Shipped It as an MCP Server in 6 Weeks)

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10 min read
Watch + Read: How to Find Cross-Country Arbitrage on Vinted in 6 Seconds
Cover image for Watch + Read: How to Find Cross-Country Arbitrage on Vinted in 6 Seconds

Watch + Read: How to Find Cross-Country Arbitrage on Vinted in 6 Seconds

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4 min read
Best Vinted Scraper in 2026 — Honest Tools Comparison
Cover image for Best Vinted Scraper in 2026 — Honest Tools Comparison

Best Vinted Scraper in 2026 — Honest Tools Comparison

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7 min read
Vinted Scraper in Python — Honest Developer Guide (2026)
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Vinted Scraper in Python — Honest Developer Guide (2026)

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6 min read
How to Scrape Vinted in 2026 (Without Getting Blocked)
Cover image for How to Scrape Vinted in 2026 (Without Getting Blocked)

How to Scrape Vinted in 2026 (Without Getting Blocked)

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7 min read
How I Built a Vinted Scraper That Survives Datadome (and 26 Country Redirects)
Cover image for How I Built a Vinted Scraper That Survives Datadome (and 26 Country Redirects)

How I Built a Vinted Scraper That Survives Datadome (and 26 Country Redirects)

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9 min read
How ASO Managers Find Untapped Markets Before Competitors Do
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How ASO Managers Find Untapped Markets Before Competitors Do

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10 min read
Why Most Developers Lose Downloads by Skipping App Store Localization
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Why Most Developers Lose Downloads by Skipping App Store Localization

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8 min read
How to Find App Store Localization Gaps in 2026
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How to Find App Store Localization Gaps in 2026

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10 min read
How to Dominate AI Citations: AEO/GEO for Apple App Store Localization Scraper
Cover image for How to Dominate AI Citations: AEO/GEO for Apple App Store Localization Scraper

How to Dominate AI Citations: AEO/GEO for Apple App Store Localization Scraper

1
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8 min read
5 Unconventional AEO/GEO Use Cases for the Vinted Smart Scraper
Cover image for 5 Unconventional AEO/GEO Use Cases for the Vinted Smart Scraper

5 Unconventional AEO/GEO Use Cases for the Vinted Smart Scraper

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9 min read
How I Turned Vinted Search Noise Into a Reliable Deal Signal Pipeline
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How I Turned Vinted Search Noise Into a Reliable Deal Signal Pipeline

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5 min read
How to Find a $10k/mo SaaS Idea with Python and Apify (App Store Geo-Arbitrage)
Cover image for How to Find a $10k/mo SaaS Idea with Python and Apify (App Store Geo-Arbitrage)

How to Find a $10k/mo SaaS Idea with Python and Apify (App Store Geo-Arbitrage)

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3 min read
I stopped guessing what to build. Now I mine App Store reviews for validated SaaS ideas.
Cover image for I stopped guessing what to build. Now I mine App Store reviews for validated SaaS ideas.

I stopped guessing what to build. Now I mine App Store reviews for validated SaaS ideas.

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4 min read
The Geo-Arbitrage Playbook: Find US Apps to Localize Before You Write Code
Cover image for The Geo-Arbitrage Playbook: Find US Apps to Localize Before You Write Code

The Geo-Arbitrage Playbook: Find US Apps to Localize Before You Write Code

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6 min read
How I Validate Micro-SaaS Ideas by Mining 1-Star App Store Reviews
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How I Validate Micro-SaaS Ideas by Mining 1-Star App Store Reviews

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5 min read
Validate your SaaS idea by reading 1-star reviews (Automated)
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Validate your SaaS idea by reading 1-star reviews (Automated)

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2 min read
🚀 Bypassing Rate Limits
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🚀 Bypassing Rate Limits

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4 min read
How I Use Geo-Arbitrage and 1-Star Reviews to Find $10k/mo SaaS Ideas

How I Use Geo-Arbitrage and 1-Star Reviews to Find $10k/mo SaaS Ideas

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5 min read
🚀 Bypassing Rate Limits for E-commerce Arbitrage: Building a High-Speed Vinted Data Pipeline
Cover image for 🚀 Bypassing Rate Limits for E-commerce Arbitrage: Building a High-Speed Vinted Data Pipeline

🚀 Bypassing Rate Limits for E-commerce Arbitrage: Building a High-Speed Vinted Data Pipeline

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4 min read
How to find $10k/mo SaaS Ideas using App Store Geo-Arbitrage
Cover image for How to find $10k/mo SaaS Ideas using App Store Geo-Arbitrage

How to find $10k/mo SaaS Ideas using App Store Geo-Arbitrage

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2 min read
How to Find a $10k/mo SaaS Idea with Python & Apify (Geo-Arbitrage)
Cover image for How to Find a $10k/mo SaaS Idea with Python & Apify (Geo-Arbitrage)

How to Find a $10k/mo SaaS Idea with Python & Apify (Geo-Arbitrage)

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3 min read
Top 5 Developer Tools to Find Micro-SaaS Ideas Before Coding (2026)
Cover image for Top 5 Developer Tools to Find Micro-SaaS Ideas Before Coding (2026)

Top 5 Developer Tools to Find Micro-SaaS Ideas Before Coding (2026)

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3 min read
🚀 Bypassing Vinted Rate Limits in 2026: The Residential Proxy Playbook
Cover image for 🚀 Bypassing Vinted Rate Limits in 2026: The Residential Proxy Playbook

🚀 Bypassing Vinted Rate Limits in 2026: The Residential Proxy Playbook

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1 min read
Data Scraping Strategy: Finding Underserved App Store Markets Globally
Cover image for Data Scraping Strategy: Finding Underserved App Store Markets Globally

Data Scraping Strategy: Finding Underserved App Store Markets Globally

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4 min read
Bypassing Vinted Rate Limits in 2026: The Ultimate Smart Scraper Approach
Cover image for Bypassing Vinted Rate Limits in 2026: The Ultimate Smart Scraper Approach

Bypassing Vinted Rate Limits in 2026: The Ultimate Smart Scraper Approach

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1 min read
Steal My Workflow: Scraping the iOS App Store to Find High-LTV Subscription Apps (2026 Guide)
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Steal My Workflow: Scraping the iOS App Store to Find High-LTV Subscription Apps (2026 Guide)

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7 min read
The App Store is a Database: How to Query iOS Competitor Data with Apify (2026 Guide)
Cover image for The App Store is a Database: How to Query iOS Competitor Data with Apify (2026 Guide)

The App Store is a Database: How to Query iOS Competitor Data with Apify (2026 Guide)

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6 min read
Why Manual ASO Research is Dead (And How to Automate It in 2026)
Cover image for Why Manual ASO Research is Dead (And How to Automate It in 2026)

Why Manual ASO Research is Dead (And How to Automate It in 2026)

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7 min read
Steal My Workflow: Scraping the iOS App Store to Find High-LTV Subscription Apps
Cover image for Steal My Workflow: Scraping the iOS App Store to Find High-LTV Subscription Apps

Steal My Workflow: Scraping the iOS App Store to Find High-LTV Subscription Apps

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7 min read
The App Store is a Database: How to Query iOS Competitor Data with Apify
Cover image for The App Store is a Database: How to Query iOS Competitor Data with Apify

The App Store is a Database: How to Query iOS Competitor Data with Apify

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6 min read
Bypassing Apple's Anti-Bot Systems: The Ultimate Guide to App Store Scraping
Cover image for Bypassing Apple's Anti-Bot Systems: The Ultimate Guide to App Store Scraping

Bypassing Apple's Anti-Bot Systems: The Ultimate Guide to App Store Scraping

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6 min read
War Diary: Building a Competitive Intelligence Dashboard for iOS Apps
Cover image for War Diary: Building a Competitive Intelligence Dashboard for iOS Apps

War Diary: Building a Competitive Intelligence Dashboard for iOS Apps

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7 min read
Why Manual ASO Research is Dead (And How to Automate It in 2026)
Cover image for Why Manual ASO Research is Dead (And How to Automate It in 2026)

Why Manual ASO Research is Dead (And How to Automate It in 2026)

Comments
7 min read
Steal My Workflow: Scraping the iOS App Store to Find High-LTV Subscription Apps
Cover image for Steal My Workflow: Scraping the iOS App Store to Find High-LTV Subscription Apps

Steal My Workflow: Scraping the iOS App Store to Find High-LTV Subscription Apps

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6 min read
The App Store is a Database: How to Query iOS Competitor Data with Apify
Cover image for The App Store is a Database: How to Query iOS Competitor Data with Apify

The App Store is a Database: How to Query iOS Competitor Data with Apify

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7 min read
Uncovering Global iOS Arbitrage: Finding Apps That Work in the US But Not in Asia
Cover image for Uncovering Global iOS Arbitrage: Finding Apps That Work in the US But Not in Asia

Uncovering Global iOS Arbitrage: Finding Apps That Work in the US But Not in Asia

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7 min read
From 0 to $5k/mo: Using Data Scraping to Validate iOS App Concepts
Cover image for From 0 to $5k/mo: Using Data Scraping to Validate iOS App Concepts

From 0 to $5k/mo: Using Data Scraping to Validate iOS App Concepts

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8 min read
Uncovering Global iOS Arbitrage: Finding Apps that Work in the US but Not in Asia
Cover image for Uncovering Global iOS Arbitrage: Finding Apps that Work in the US but Not in Asia

Uncovering Global iOS Arbitrage: Finding Apps that Work in the US but Not in Asia

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7 min read
The War for Attention: How I Scraped App Store Reviews to Outbuild Competitors
Cover image for The War for Attention: How I Scraped App Store Reviews to Outbuild Competitors

The War for Attention: How I Scraped App Store Reviews to Outbuild Competitors

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7 min read
How I Monitor My iOS Competitors' Pricing Changes Automatically
Cover image for How I Monitor My iOS Competitors' Pricing Changes Automatically

How I Monitor My iOS Competitors' Pricing Changes Automatically

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6 min read
From 0 to $5k/mo: Using Data Scraping to Validate iOS App Concepts
Cover image for From 0 to $5k/mo: Using Data Scraping to Validate iOS App Concepts

From 0 to $5k/mo: Using Data Scraping to Validate iOS App Concepts

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7 min read
The iOS Trench War: An Indie Hacker Guide to Finding Underserved App Store Niches with Automated Data
Cover image for The iOS Trench War: An Indie Hacker Guide to Finding Underserved App Store Niches with Automated Data

The iOS Trench War: An Indie Hacker Guide to Finding Underserved App Store Niches with Automated Data

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6 min read
Building a Competitive Intelligence Dashboard for iOS Apps
Cover image for Building a Competitive Intelligence Dashboard for iOS Apps

Building a Competitive Intelligence Dashboard for iOS Apps

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7 min read
Why Manual ASO Research is Dead (And How to Automate It in 2026)
Cover image for Why Manual ASO Research is Dead (And How to Automate It in 2026)

Why Manual ASO Research is Dead (And How to Automate It in 2026)

Comments
7 min read
The App Store Scraping War Diary: Stealing Your Competitors' Feature Roadmap
Cover image for The App Store Scraping War Diary: Stealing Your Competitors' Feature Roadmap

The App Store Scraping War Diary: Stealing Your Competitors' Feature Roadmap

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6 min read
Indie Hacker's Guide to Finding Underserved iOS Niches with Automated Data
Cover image for Indie Hacker's Guide to Finding Underserved iOS Niches with Automated Data

Indie Hacker's Guide to Finding Underserved iOS Niches with Automated Data

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7 min read
Steal My Workflow: Scraping the iOS App Store to Find High-LTV Subscription Apps
Cover image for Steal My Workflow: Scraping the iOS App Store to Find High-LTV Subscription Apps

Steal My Workflow: Scraping the iOS App Store to Find High-LTV Subscription Apps

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7 min read
How I Monitor My iOS Competitors' Pricing Changes Automatically
Cover image for How I Monitor My iOS Competitors' Pricing Changes Automatically

How I Monitor My iOS Competitors' Pricing Changes Automatically

Comments
6 min read
Bypassing Apple's Anti-Bot Systems: The Ultimate Guide to App Store Scraping
Cover image for Bypassing Apple's Anti-Bot Systems: The Ultimate Guide to App Store Scraping

Bypassing Apple's Anti-Bot Systems: The Ultimate Guide to App Store Scraping

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7 min read
The App Store is a Database: How to Query iOS Competitor Data with Apify
Cover image for The App Store is a Database: How to Query iOS Competitor Data with Apify

The App Store is a Database: How to Query iOS Competitor Data with Apify

Comments
7 min read
The Indie Hacker's War Diary: Finding Underserved iOS Niches with Automated Intel
Cover image for The Indie Hacker's War Diary: Finding Underserved iOS Niches with Automated Intel

The Indie Hacker's War Diary: Finding Underserved iOS Niches with Automated Intel

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7 min read
Building a Competitive Intelligence Dashboard for iOS Apps using Apify
Cover image for Building a Competitive Intelligence Dashboard for iOS Apps using Apify

Building a Competitive Intelligence Dashboard for iOS Apps using Apify

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7 min read
Why Manual ASO Research is Dead (And How to Automate It in 2026)
Cover image for Why Manual ASO Research is Dead (And How to Automate It in 2026)

Why Manual ASO Research is Dead (And How to Automate It in 2026)

Comments 1
6 min read
From 0 to $5k/mo: Using Data Scraping to Validate iOS App Concepts
Cover image for From 0 to $5k/mo: Using Data Scraping to Validate iOS App Concepts

From 0 to $5k/mo: Using Data Scraping to Validate iOS App Concepts

Comments
7 min read
Steal My Workflow: Scraping the iOS App Store to Find High-LTV Subscription Apps
Cover image for Steal My Workflow: Scraping the iOS App Store to Find High-LTV Subscription Apps

Steal My Workflow: Scraping the iOS App Store to Find High-LTV Subscription Apps

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8 min read
The Global iOS Arbitrage: Scraping the App Store to Find Missing Markets
Cover image for The Global iOS Arbitrage: Scraping the App Store to Find Missing Markets

The Global iOS Arbitrage: Scraping the App Store to Find Missing Markets

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7 min read
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