Alex Fajkowski
I make apps. Currently shipping Check ID, the professional ID scanner for age verification. And Apparent Sudoku, a clean, distraction-free Sudoku game. Plus Air Quality and Phone Pattern Blocker.
November 2026
Check ID for Teams is live — shared setup and staff management for businesses verifying age at the door. Apparent Sudoku, Air Quality, and Phone Pattern Blocker are all ready for iPhone Duo. And we weathered Black October — the wave of PHP and Node.js hacks and RCE exploits. Whew! More to come.
What I'm working on
Check ID
Age verification & compliance for retailers and venues.
Apparent Sudoku
Clean, distraction-free Sudoku for iPhone, iPad, Mac, and Vision Pro.
Air Quality
Live air quality, smoke, and wildfire forecasts for anywhere on Earth.
Phone Pattern Blocker
Block entire area codes, exchanges, and spoofed number ranges with one pattern.
ShowRing
A companion app for horse shows. Available on the App Store.
Apparent Logic
iOS & Apple platform consulting. 20 years building for Apple.
About
I've built for Apple platforms for twenty years — work shipped for NFL, Calm, Chipotle, Food Network — and now my own products. Check ID and Apparent Sudoku are the focus right now, both built privacy-first and bootstrapped. Working on problems I find interesting. Based in San Francisco.
Get in touch
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