Daon Opus
Simple, focused apps.
My Apps
Browse all the apps I build.
MMath Q&A
Ask math questions, get clear answers.
PPlayground
Fun mini-games to take a break.
AArticles
Guides and resources about math.
Daon Opus is a small math library with tools attached: 226 practical articles you can read in one sitting, free tutoring apps for grades 1–12, a place to ask questions, and games for when the brain needs a break. Everything here is built for one job — a real person, stuck on real math, getting unstuck.
The articles are written to be used, not skimmed. Each one covers a single idea with real numbers worked step by step, starts from a mistake people actually make, and links straight to practice so you can try it the same day. Before anything new goes in, the whole library is checked so the same idea never appears twice. How the work is done — including the AI tools used for drafting and the line-by-line checking after — is written down on the about page.
Start here
For parents
Your child says they hate math. Start with what fear does to learning, then pick one topic to fix together.
For students
Studying harder is not the answer. Studying differently is — here is the system that makes practice stick.
For teachers
Half of later confusion is place value that never landed. A one-sitting guide you can hand out on day one.