Disclosures
What earns money, what measures visitors and which tools sit behind this site. Last reviewed: 2026-10-27.
Ads
This site shows no ads.
The free version of WealthSim does show ads. Rydger and REBT Calculator have no ads.
Rydger, WealthSim and REBT Calculator all have a paid Pro version. I don't publish income figures.
Analytics
Three tools run on this site:
- Google Analytics 4.
- Vercel Analytics, cookie-less.
- Vercel Speed Insights, which measures load speed with anonymous data.
Vercel Analytics uses no cookies and is always on. Google Analytics always loads, but until you accept analytics cookies it only sends cookie-less pings. In the European Economic Area, the UK and Switzerland the site asks first; elsewhere there is no banner and analytics is on by default.
The details for Google Analytics, Vercel Analytics and Speed Insights are in theprivacy policy.
How the posts are written
I write with coding agents. In the post about the verifier I describe how a second agent reviewed the draft and failed it twice.
Every number has to trace back to the post itself or to a cited source.
Every post exists in Spanish and English. Each is written twice, not translated.
Day job
I work full time as a software engineer.