Every AI-generated card, quiz item, and tutor answer is grounded in your own material — with visible source citations you can tap to read the exact passage, an honest confidence signal, and the willingness to say 'that isn't in your material' instead of making something up. We grade what you mean, not the exact words you typed.
Most study apps hand you AI answers with no way to check them — and the AI-native ones are hated for being confidently wrong on the exact STEM problems you need right. We took the opposite path. When you generate a study kit from your own notes, PDF, or reading, every card carries a citation back to the exact passage it came from. Tap it and read the source. If the AI can't ground an answer in your material, it tells you — and asks whether you want a general-knowledge answer instead of quietly inventing one.
Not a marketing promise — the trust signals are on the cards themselves.
Every grounded card and answer shows the passages it came from. Tap a citation to read the exact source text — no more taking the AI's word for it.
Each answer is labeled Grounded (traced to your material), Inferred (reasoned from it), or Not in your material — so you always know how solid it is.
Ask the tutor something outside your material and it says so, then offers a general-knowledge answer as your explicit choice — never a fabricated one dressed up as fact.
Edited your notes? One tap re-checks a card against its cited passage and flags drift — with a corrected answer the source actually supports.
Type an answer in your own words. A faithful paraphrase, a synonym, or a reordered statement is marked correct — we grade the idea, not the exact string.
When you're wrong, you get more than a red X: the specific wrong idea you appear to hold, so your next question is the right one.
One upload, and every study tool inherits the trust layer.
Upload a PDF, paste notes, or pick a reading. It's chunked into passages the AI can cite precisely.
Cards, quizzes, and audio are built from your passages. Each one records the exact chunk it drew on and the sentence that supports it.
Citations are tappable, confidence is labeled, and 'Verify against source' re-checks any card on demand. Nothing is a black box.
When you generate from your own material, cards are built only from passages it can cite — anything it can't ground, it drops. When you ask the tutor something your material doesn't cover, it tells you plainly and asks before answering from general knowledge. Confidently-wrong answers dressed up as fact are exactly what this layer exists to prevent.
Grounded means every claim traces to a passage we cite. Inferred means it's a reasonable synthesis of your material that isn't stated word-for-word. Not in your material means we won't pretend — you decide whether to go to general knowledge.
No. Grading judges meaning. Paraphrases, synonyms, abbreviations, and reordered answers that convey the required idea are marked correct. Exact-string grading is a failure mode we deliberately don't have.
Use 'Verify against source' on a card. It re-checks the card against its cited passage and, if the source has drifted from the card, flags it and suggests a corrected answer.
Generate a cited study kit from your own notes and see every source for yourself.