We're building the clearest place anywhere to learn hard ideas.

Jonah Reyes

Through its short, carefully built lessons, Lodestar finally made linear algebra click for me — a subject I'd bounced off twice before. I now feel confident approaching both technical interviews and the messier problems that show up at work.

Amara Okafor — Android review

This is great. I work in optics and have picked up a couple of new techniques already. For anyone of any age it fills in the gaps left by school, whether you're still in it or it's a distant memory.

Dev Menon — Community forum

Very impressed with Lodestar so far. It's not often I feel sincere joy about learning, which is a shame, but the interactive lessons make it hard not to. I'm genuinely looking forward to the next half hour I can give it.

freya_l — iOS review

I love this app. It helped me understand so many things that used to give me headaches in high school. Now, thanks to Lodestar, I love knowledge and learning. I also placed in the top 3% on the national exam among school leavers, and I only ever studied on Lodestar.

Tomás Ibarra — Community forum

I teach year-11 physics and I've started building whole lessons around the problem sets. Watching a class argue about a probability puzzle instead of copying notes off a board is worth the subscription on its own.

Priyanka Nair — Android review

Lodestar has opened new doors for my understanding of physics and mathematics. I'm simply inspired by the effort the team puts into each course. I'd suggest beginners start from the fundamentals track and work forward.