Tip: photo / PDF quality must be clear and well-lit — blurry or dark pictures can't be read by the AI.
Stuck on homework? Paste the question, or upload a photo of the textbook page or a PDF, and ask the AI to explain any topic the way your syllabus teaches it. You get the explanation at your level, in your exam board's style, plus key points and follow-up questions. Free, no account needed.
Set your board once and the wording changes. CBSE answers come back as numbered scoring points in NCERT terminology, with numericals laid out Given, To find, Formula, Solution, Answer with units. GCSE (AQA, Edexcel, OCR) answers obey the command word: State gives one fact, Explain gives a linked cause-and-effect chain. AP answers are labelled (a), (b), (c) and tie reasoning to a named course concept. Cambridge IGCSE and International A-Level answers use the exact mark-scheme vocabulary and keep each scoring point separable, with significant figures and units on calculations. WAEC and WASSCE answers are numbered points, each stated then explained in a sentence. If you have not set a board, you get the general method plus a note where boards differ.
Set your exam board — it takes about 30 seconds and every answer after that matches your syllabus.
You photograph a page on electrolysis of molten lead bromide and type: explain this, I do not get why bromine forms at the anode. Set to Cambridge IGCSE and Long, the answer comes back as: lead bromide must be molten so the ions are free to move; Pb2+ ions move to the cathode and gain 2 electrons; Br- ions move to the anode and lose electrons, so 2Br- becomes Br2 plus 2 electrons. Key points list the half equations. The follow-ups ask you to predict the products for molten zinc chloride and to say why solid lead bromide does not conduct. Answer those two yourself before checking anything, because those are the versions that turn up in the paper.
Yes. There is no paid tier, no trial, no card, and no ads. You can use it without an account, although setting your country, year group and exam board makes the explanations much more accurate. There is a daily cap on how many explanations you can run, purely so the running costs stay manageable and the site stays up for everyone.
Yes, photos and PDFs both work. Photos are resized automatically so a normal phone picture is fine; PDFs need to be under 3 MB, so upload just the page you need rather than the whole book. It reads printed text well and handwriting reasonably, as long as the shot is sharp and evenly lit. Dark, blurry or steeply angled photos are the usual cause of a wrong reading.
It will explain the question, and yes, that often includes working through one. That is not the same as handing in an AI answer, which most schools treat as cheating and which teaches you nothing before the exam, where you are alone with a pen. Use it to understand the method, then close the page and redo the question yourself. If you cannot redo it, you have not learned it yet.
Yes, sometimes. It can misread a badly lit photo, drop a minus sign, or state something confidently that your syllabus words differently. Treat it like a clever friend explaining at break, not like the mark scheme. Check anything that matters against your textbook or your teacher, and be extra careful with definitions, dates and anything your board words in a fixed way.
Anything on a school syllabus: maths, the three sciences, English, history, geography, economics, computer science, and languages. It handles equations and chemical formulae properly rather than printing them as broken symbols, and it will draw a small diagram when a process or hierarchy is easier to see than to read. Very niche coursework topics and anything needing your specific school's notes are where it is weakest.
Yes. There is a tone setting that ranges from kid-friendly to formal exam-prep voice, and a format setting for bullets, paragraphs or step-by-step. You can also pick an interest, such as sport, cooking or gaming, and the examples get pulled from that world instead of generic ones. If an explanation still lands badly, run it again and say which sentence lost you.
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