Aethermath
Lessons, practice problems and timed contests for high school olympiad students. Free to use.
Every lesson topic you finish lights a star, and each subject is its own constellation.
Open your skyShort lessons with a check at the end
Problems with hints when you need them
Timed contests on a fixed schedule
Earn Elo and rise from Comet to Galaxy
No sign-up needed. Nothing is saved.
How many subsets does a set with 4 elements have?
Short theory pages for every topic, with a micro-check at the end. Pass it the first time to earn 10 Coins.
Every problem has three hint tiers, each priced by that problem. Hints are off in timed mocks and contests.
Scheduled and timed, with one attempt and an honour statement. Results are unofficial until timing moves to our server.
Climb from Comet to Galaxy. Your rank comes from Elo, earned on rated problems and in contests.
Write full proofs and have them graded on a rubric. Appeals go to a human grader.
Lessons and practice are free to use.
High school students preparing for national, regional and international olympiads.
Not yet. Your progress is saved in this browser for now. Accounts are coming, and will keep your progress across devices.
Not yet. Timing currently runs in your browser, so results are unofficial until it moves to our server.
You earn them by solving problems for the first time and passing micro-checks, and spend them on hints. Coins never affect your rank.
Ranks come from Elo. Rated problems are coming soon: solve them cleanly to earn Elo and climb from Comet to Galaxy.