Calcora is a free platform for practicing olympiad-style math problems of all difficulty levels. Solve problems, maintain your streak, and compete with friends on the leaderboard.
Cost / License
- Free
- Proprietary
Platforms
- Online
Austria
EU




Brilliant.org is described as 'Also known as Brilliant, is a website and associated community that features problems and courses in mathematics, physics, quantitative finance, and computer science' and is a online education service in the education & reference category. There are more than 50 alternatives to Brilliant.org for a variety of platforms, including Web-based, iPhone, Android, iPad and Android Tablet apps. The best Brilliant.org alternative is Khan Academy, which is free. Other great apps like Brilliant.org are SkillShare, Wikiversity, LinkedIn Learning and TED-Ed.
Calcora is a free platform for practicing olympiad-style math problems of all difficulty levels. Solve problems, maintain your streak, and compete with friends on the leaderboard.




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