Math practice that adapts to you.
An adaptive question bank with the next problem ready the second you want it, picked for exactly where you are. Every answer and solution is solved by a computer, not AI, and your mastery is tracked skill by skill as you go. Ready for SAT Math, AP Calculus, and AP Precalculus today.
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Our philosophy
Studying well is a two step routine. Most resources only cover the first step.
Learn the basics
When you start a topic, you just need a rough grasp of the facts. It does not have to click yet. Class, videos, and prep books are great for this part.
Build understanding through problems
This is 80 to 90% of the work. Solving problems and their variations with active recall is what connects the ideas and equations to real questions, and it is what test day actually asks of you.
Lodera is built for step two. Instead of spending half your study time hunting for practice problems, you get the right next one in seconds and drill your weakest skills until they hold.
Key features
Adaptive difficulty
Every answer sets the difficulty of the next question and pulls in the skills you miss, so practice always sits at the edge of what you know.
Verified answers
Every answer is checked by a computer algebra system, with hints and full worked solutions on every problem.
Mastery tracking
A live mastery map shows which skills are solid and which still need work, and mastery carries over between courses.
Every answer is verified by a computer algebra system. You can see which skills have been mastered and which still need work, and it’s completely free to use.