Jade Arithmetic vs SeferAI

Jade Arithmetic will let you practice and improve your arithmetic skills -- multiplication, division, addition, and subtraction. We designed and built it for our kids, and hope that many others will use it. It is ad-free, and will remain so. We are just getting started, and have many new features planned. Please let us know what would be useful to your family, school, or homeschool group. Have a splendiferous day!

SeferAI answers your questions about Jewish texts with a study that cites its sources. Ask about a verse, a sugya, a holiday or an idea, in English, Hebrew, German, French, Spanish, Portuguese, Russian or Ukrainian. SeferAI searches about 4 million passages of Sefaria's library - Tanakh, Talmud, Midrash, Halakhah, Kabbalah, Chasidut, responsa and commentary - and writes a structured answer in your language. Every claim links to the original text, so you can check it. LISTEN Turn an answer into a narrated podcast episode. Follow your private feed in any podcast app, or listen on Apple Watch without your phone. STUDY With Ultra-Premium: two-voice conversational episodes, flashcards, quizzes, mind maps and study guides drawn from your answer. THIS WEEK The Torah panel shows this week's parashah, the daf yomi, the Hebrew date and the coming holidays. Tap any of them to ask about it. HONEST ABOUT TRANSLATION When a quotation is translated by AI rather than taken from a published translation, the answer says so. Sefaria's own German, French and Portuguese translations are quoted directly. SeferAI is an independent study tool built on Sefaria's open library. Its syntheses are written by AI: they are study aids, not halakhic rulings. Asking and reading are free. A free account keeps your studies private and makes podcasts. Premium and Ultra-Premium add premium narration voices, full-length episodes and the study tools.