Blog
YouLearn AI review: a hands-on test of the free tier
I tested YouLearn AI's free tier on October 3, 2026: where it was good, the five-message chat limit, current prices, and the alternatives.
Speechify alternatives: free readers, and one you can interrupt
Free and cheaper Speechify alternatives compared, with prices checked in October 2026, and the read-aloud tool I built so I could interrupt it.
NotebookLM alternatives, now that it is called Gemini Notebook
NotebookLM is now Gemini Notebook. What the rename changed, what its audio and voice modes do, and the alternatives, with prices.
Math Academy review for adults: worth it if you want to do math
Math Academy for adult learners, reviewed from its own documentation and named user accounts by someone who builds a different kind of tutor.
A history of intelligent tutoring systems, from PLATO to LLM tutors
Teaching machines, PLATO, Bloom's 2 sigma problem, Cognitive Tutors, ALEKS and LLM tutors, and what each one knew about its learner.
The best AI tutors in 2026, compared by what they know about you
I build an AI tutor, so I checked the others: ChatGPT, Gemini, Claude, Khanmigo, ALEKS, Math Academy and more, with prices and limits.
Alternatives to Audible for people who listen to learn
Audiobook services, summary apps, read-aloud tools and voice AI compared, with the evidence on why listening alone teaches so little.