Apps

What I build now, in 2026

Small tools and pages I built and run on Cloudflare in 2026. All free, no account needed.

• You 🤝 Przemysław?A hire page shaped like a film about the Riddler: two quizzes, a coin toss and an AI agent that answers questions about me.
• PrzemoFlack, as in the Flak Cannon: a meme Slack where the only chat that works is a DM with me as an AI agent. It started as Przemo, a bot of me for the team chat, and it replies the way I do, typos included.
• MigawkiIt began as a song from an EP called Migawki and ended as an abstract browser game in a rainy night city. All you see are snapshots.
• B2B vs UoP calculatorCompares a Polish B2B contract with employment for a whole year, with taxes, leave, sick days and costs.
• WyroczniaAsk Klaudia anything. She answers only yes or no.
• Korpo TłumaczTranslates corporate speak into plain Polish and back, with a dictionary of buzzwords.

Smaller free tools: BIMI checker,Software cost estimator,Build or buy,App store ready,Runbook generator,SLA calculator,Local model or API?,Legacy rewrite estimate,Email Test,Phishing email checker,Signature Desk,Dashboard Desk,Eval Desk,List Desk,AI Visibility Desk,Quote Desk,Multi-tenant SaaS calculator,OpenAPI to MCP tools,KSeF invoice validator,Quoting time calculator,Business idea validator,SPF, DKIM, DMARC checker,Engagement configurator,Glossary.

Below: the apps from my first decade, as this page showed them in 2017.