{
  "id": 18880609,
  "title": "I made a free, open source alternative to Brilliant (140+ interactive math and science courses)",
  "url": "https://urgent.news/2026/11/08/i-made-a-free-open-source-alternative-to-brilliant-140-interactive",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-11-08T06:33:32.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/ashish_624379625242c5d263/i-made-a-free-open-source-alternative-to-brilliant-140-interactive-math-and-science-courses-4d97"
  },
  "original_language": "en",
  "account": "A free, open-source alternative to Brilliant has emerged, offering 140+ interactive math and science courses with no account or ads. The platform relies on a pedagogy where users engage in interactive practice before receiving explanations. This approach, rather than just offering content, may be why the project gained traction. The author even admits that only about a third of the pages have been reviewed, encouraging users to flag issues and contribute to improvements.\n\nThe OpenAha project, which treats learning as a feedback loop, presents a challenge, captures user responses, and adjusts difficulty. This same control structure could be applied to various skill-training systems, including vision training. AmblyoPunch, a Meta Quest vision-training game, shares similarities with this feedback loop concept. It focuses on dichoptic training, which involves giving each eye its own view and forcing them to cooperate, rather than isolating one eye.\n\nIn AmblyoPunch, users engage in a VR game where Gabor-pattern coins fly towards them, and they must punch them to earn points. Red spikes pose a threat, requiring users to dodge or duck. As users progress through various worlds, the difficulty increases, with objects becoming faster and smaller, and spikes larger. The game incorporates a four-stage dichoptic plan, including monocular warm-up, breaking suppression, rebalancing, and fusion training. This progressive difficulty adjustment helps maintain user engagement, as too easy or too hard levels could cause disengagement.\n\nThe game's adaptive difficulty system, combined with its engaging content, aims to encourage daily practice. However, it's essential to note that AmblyoPunch is a training and assistive game, not a medical device. Users should consult an eye-care professional for clinical advice. To try AmblyoPunch, visit https://www.meta.com/en-gb/experiences/amblyopunch/1239507485902689/.",
  "summary": "What a Free, Open-Source Brilliant Clone Teaches Us About Lazy Eye Training Someone on Lemmy posted a free, open-source alternative to Brilliant this week: 140+ interactive courses, 1000+ lessons in math, physics, and chemistry, no account, no ads — because the paid version costs up to $160 a year depending on region. It hit 128 upvotes and 70 comments, and the author was upfront that only about…",
  "key_points": [
    "OpenAha project offers 140+ interactive math and science courses",
    "Feedback loop approach encourages user engagement and contributions",
    "AmblyoPunch shares similar adaptive difficulty system for vision training"
  ],
  "editors_take": "The emergence of OpenAha signals a shift toward community-driven, interactive pedagogy that challenges subscription-based models by prioritizing active feedback loops over static content delivery.",
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}