AI doubt solver · Hindi, Hinglish & English
Learn in your language. Build the confidence to solve it yourself.
Stuck on a maths step or a science concept? Type your question or attach a clear photo. Get step-by-step AI help in your chosen answer language, at your own pace.
12 Indian languages School + competitive exams · No subscription
3x + 5 = 20
ASK YOUR DOUBT
Choose your class, subject and answer language. Tell us where you got stuck. Already tried it? Include your attempt.
Turn your saved answer into a spoken, animated whiteboard lesson. Follow each step with a tutor character, then replay at your own pace.
No login needed for the demo. Answer credits are purchased separately. Animated browser lesson, not an MP4 download; voice support depends on your device.
2x + 4 = 10
2x = 6
Your question. Clear steps. Your pace.
Sign in or create your account to ask a question.
Sign in or create an account, then choose a credit pack.
Buy a credit packSign in to start studying.
Create an account or sign in, then choose a paid credit pack. After that, submit your question to see your explanation here.
AI can make mistakes. Check the method and key facts with your textbook.
One successful answer uses one credit. Your explanation is saved in your account for revision.
SIMPLE PAY-PER-QUESTION PRICING
Buy a one-time credit pack. One successful answer uses one credit. See the price and credits before paying. No subscription or auto-renewal.
15 answer credits
Step-by-step answers with diagrams, hints, attempt checks, revision plans, practice questions and flashcards with notes. No automatic renewal.
Choose this pack ↗100 answer credits
Step-by-step answers with diagrams, hints, attempt checks, revision plans, practice questions and flashcards with notes. No automatic renewal.
Choose this pack ↗250 answer credits
Step-by-step answers with diagrams, hints, attempt checks, revision plans, practice questions and flashcards with notes. No automatic renewal.
Choose this pack ↗One successful AI response uses one credit. Failed requests restore the credit. No scheduled credit expiry while the service operates.
A question credit covers one successful AI response. Failed requests restore the credit. Payment and credit details are available in your account.
KNOW DOUBTPAY BETTER
DoubtPay AI is an online doubt solving service for two kinds of learners: school students of Class 6 to 12, and aspirants preparing for competitive exams — board exams, CUET, JEE, NEET, and government job exams like SSC, banking and railways. Instead of a costly monthly subscription, you buy a small pack of question credits and use one credit for each answer. You type the exact question from your book, previous year paper or mock test, and the AI explains it in simple steps, in the language you choose — Hindi, Hinglish, English, Bengali, Marathi, Tamil, Telugu, Gujarati, Kannada, Malayalam, Punjabi or Odia. Where a picture helps, it draws a labelled diagram in the answer, the way a teacher draws on a notebook — a geometry figure, a graph, a ray diagram, a circuit or a simple flow.
Getting help takes three simple steps. First, create your free account and choose a small credit pack — payment happens through a secure checkout, and your credits are added as soon as the payment is confirmed. Second, go to your study space, pick your class or exam, subject and answer language, and type your question or your own attempt. Third, choose how you want help: a full step-by-step explanation with a diagram, a small hint so you can solve it yourself, a check of your attempt, a revision plan for the time you have, a set of practice questions, or flashcards with quick notes and a mind map of the topic. Your answer appears on screen and stays in your account history for 90 days, so you can revise it before an exam.
Competitive exam preparation gets stuck on single questions: one previous year problem you cannot crack, one mock test question the answer key does not explain, one reasoning puzzle that eats your time. DoubtPay is built for exactly that moment. Paste the question, tell it your exam, and it walks you through the formula or the shortcut, the steps, and a diagram where it helps. Ask for a revision plan and it fits your available minutes; ask for practice questions and it gives you exam-style questions with answers. To be clear about what DoubtPay is not: it is a doubt solver, not a test series or a mock test platform — it works best alongside your books, coaching material and question banks.
Many students think in their mother tongue but study from English books, and the doubt gets lost in translation. DoubtPay explains in 12 Indian languages — Hindi, Hinglish, English, Bengali, Marathi, Tamil, Telugu, Gujarati, Kannada, Malayalam, Punjabi and Odia — so the concept lands in the language your brain already uses. Ask in whichever language is comfortable, choose your answer language, and read every step, reason and label the way your own teacher would say it.
Understanding a doubt once is not enough for exams — you need to recall it later. Choose the flashcards mode and DoubtPay turns any topic into revision material in one credit: short notes you can revise in two minutes, question-and-answer flashcards to test yourself, and a mind map diagram that shows the whole topic on one screen. Everything stays in your account history for 90 days, so the night before the exam your revision is already prepared.
Most doubt apps push you into a subscription you may not use fully. DoubtPay is different: you pay per question, and unused credits simply wait in your account with no scheduled expiry while the service operates. If an AI request ever fails, your credit comes back automatically. The focus is on understanding, not copying — every step carries a short reason, hints and attempt checking help you learn the method, and the built-in focus timer helps you finish your study session without distraction. And because many students think in Hindi or Hinglish, DoubtPay explains in the language that feels natural to you.
DoubtPay is designed to be simple and transparent for families. There is no auto-renewal — every pack is a one-time purchase, and the price is shown clearly before payment. Students under 18 should use the service with a parent or guardian's permission, and answers are meant to support school work, not replace it. AI can make mistakes, so we openly encourage every student to verify important steps with their textbook, official material or teacher.
STUDY SMARTER
Read conditional probability from a two-way table without using the wrong total. Follow a school-club example and three practice questions with solutions.
Read article : Conditional Probability from a Two-Way Table: Choose the Right TotalConvert standard deviation when units change using SD(ax + b) = |a|SD(x). Understand shifts, negative scales and variance with worked practice questions.
Read article : Standard Deviation After a Unit Conversion: Why Shifts Do Not Change SpreadCalculate population variance from values and frequencies. Follow a complete squared-deviation table, distinguish the divisor, and try worked practice.
Read article : Population Variance from a Frequency Table: A Small Worked CalculationMEDICAL BLOG · REPORT GUIDES
Read about common lab tests, report terms and questions to ask your clinician. General education, not a diagnosis.
Compare venous and capillary blood samples, understand why a finger-prick reading is not always directly comparable, and prepare useful questions.
Read article : Venous vs Capillary Blood Samples: Why a Finger-Prick Result May DifferQNS means quantity not sufficient for a laboratory test. Understand missing results, sample-volume requirements and questions about repeat collection.
Read article : QNS on a Blood Test Report: Quantity Not Sufficient ExplainedLearn why a laboratory may describe a blood sample as lipemic or lipaemic, how cloudiness can interfere with testing, and what questions to ask.
Read article : Lipemic or Lipaemic Blood Sample: Why Cloudiness Can Affect a TestBEFORE YOU BEGIN
A simple study space should be simple to understand, too.
DoubtPay AI is a pay-per-question AI doubt solver for school students of Class 6 to 12 and for competitive exam aspirants. You type your question and get a clear, step-by-step answer with a labelled diagram where it helps, in Hindi, Hinglish or English. You can also ask for a hint, get your own attempt checked, get a revision plan, or get practice questions.
DoubtPay covers Class 6 to 12 (CBSE, ICSE and State Boards), board exams, CUET, JEE, NEET, and government job exams like SSC, banking and railways. Subjects include Maths, Physics, Chemistry, Biology, Science, English, Social Studies, Reasoning and Aptitude, and GK. Because you type the exact question you are stuck on, it works with any book or paper.
DoubtPay explains in 12 Indian languages: Hindi, Hinglish, English, Bengali, Marathi, Tamil, Telugu, Gujarati, Kannada, Malayalam, Punjabi and Odia. Write your question in the language you are comfortable with — or tap the mic on Chrome and speak it — then choose your answer language from the list. You can also tap Listen to hear your answer read aloud.
There is no subscription. You buy a small one-time credit pack, and one successful AI answer uses one credit. The price and credit count are shown clearly before you pay, and packs never renew automatically.
Yes. Paste a previous year question, a mock test doubt, or a reasoning problem, select your exam, and DoubtPay explains the formula or shortcut, the steps and a diagram where it helps. It can also build a revision plan for your available time and give exam-style practice questions. It is a doubt solver, not a test series, so use it alongside your books and coaching material.
Yes. Choose the flashcards mode and one credit gives you short revision notes, 5 to 8 question-answer flashcards, and a mind map diagram of the topic. It stays in your account history for 90 days, ready for revision before the exam.
If a request fails, the credit is automatically restored to your account. You only spend credits on successful answers.
No. Credits are added only after the payment is confirmed on the server. A reference number or screenshot is not proof of payment. Direct UPI payments, if enabled, need the owner's bank verification before credits are added.
DoubtPay needs an account and a confirmed payment before questions can be asked, and you should keep personal details out of your questions. Students under 18 should use DoubtPay with a parent or guardian's permission, and use the help in line with their school's rules.
AI can make mistakes. Check the calculation, compare important facts with your textbook or official material, and ask a teacher if something looks unclear. For GK and current affairs, always verify recent facts from a newspaper or official source. Use the explanation to learn the method, then write your own answer.
It helps you focus for your chosen number of minutes, and your time choice also helps shape a revision plan. The timer does not measure payment processing or guarantee how quickly an answer arrives.