This comparison is a side-by-side look at Geometry Mastery Academy and Khan Academy, DeltaMath, and other free math sites. You're weighing us against free. That's fair — here's the honest answer, with no marketing spin.
Khan Academy is free, broad, and a fine place to rewatch a concept. DeltaMath gives you practice problems at no cost. If free is the only option that works for your family right now, they're a good start — seriously. This page exists so you can make that call with real information.
Khan Academy and DeltaMath cover every subject under the sun. We cover one: high-school geometry, from foundations through trigonometry, aligned lesson-by-lesson to Common Core HS Geometry standards. When your student struggles with a topic, they get a dedicated unit — not a search result.
Geo, the AI coach, asks questions and guides students step-by-step the way a tutor would — at 9pm, when the homework is actually due. It never just hands over an answer, and it never makes a student feel small for asking.
Every Sunday, you get a report with mastery data per topic: what improved, what's still shaky, and what's coming next. Free sites don't tell you how it's actually going.
Every lesson was built by a classroom geometry teacher with 21+ years of experience. And when a breakthrough needs a human voice, live one-on-one tutoring is a tap away.
If the budget is genuinely $0 this year, start with Khan Academy — we mean that. We're built for families who've tried the free route and want geometry-specific coaching, real progress reports, and a teacher behind every lesson. If that's not your situation yet, the free sites will still be there, and so will we.