About
I focus on building products that solve real world problems. My projects include a disposable email service (35k+ MAU & 18k mobile downloads), a gaming analytics platform (20k MAU & $1,200+/month ad revenue at seasonal peaks), and a price tracking tool (2k MAU) for Costco shoppers.
Work Experience
Skills
Check out my latest projects
These are the applications and tools I love working on.

Temporary Email Service
Cross-platform disposable email service with 35,000+ monthly web users and 18,000+ mobile downloads. Has processed over 1 million emails and generated 600k+ unique addresses to date. Monetized through Stripe subscriptions and ads.

PD2 Tools
Analytics platform for a Diablo 2 private server community with 20,000+ monthly users and $1,200+/month in ad revenue at seasonal peaks. Features include character and meta analysis, economy tracking, trade listings and other game information. Integrated the OpenAI API to parse unstructured trade posts into normalized price data for market analysis.

Costco Sale Tracker
Price tracking application for Costco products with 2,000+ monthly users. Automated daily scraping with Puppeteer, using proxy rotation and randomized delays to handle anti-bot measures. Displays historical price trends and sale patterns.
Get in Touch
Want to chat? Just shoot me an email at cole@coleestrin.io and I'll respond whenever I can.