· Education · 5 min read
How to Revise a Science Chapter in 30 Minutes
A 30-minute routine for revising any Class 10 Science chapter, worked through on Chemical Reactions and Equations.
Lagnever AI
Available on AndroidPhoto kheencho, doubt solve karo. Step by step, in Hinglish.
Lagnever AI is an AI doubt solving app for Class 10 students in India. Photograph any question and see the method one step at a time, ask an AI tutor on a voice call, and revise with exam summaries and flashcards.
- Downloads on Google Play
- 10K+
- Rating from 194 reviews
- 4.2★
- Languages
- Hinglish + English
Google Play figures as of 16 October 2026.
Inside the app
Ask, listen, revise: what the app looks like
Photo se doubt solve 
AI voice call tutor 
Exam summary 
Flashcards
Screens show sample Class 10 questions. Wording in the app can differ.
What it does
Everything a Class 10 student needs to clear a doubt and revise
- Photo se doubt solve
- Take a photo of a question from your textbook, notebook or a sample paper. Lagnever AI reads it and shows the solution one step at a time, in Hinglish or English, so you can follow the method and write it the same way in your exam.
- AI voice call tutor
- Start a voice call and ask your doubt out loud, the way you would ask a teacher. The tutor answers by voice, and the conversation is saved as a transcript to read later.
- Exam summaries
- Short revision notes for a chapter, organised around what is usually asked in board papers. Useful the night before a test, or as the first step of a revision session.
- Flashcards
- Turn a topic or your own notes into flashcards for active recall. Testing yourself is what makes revision stick, and saved cards can be reviewed offline.
- Hinglish, the way you think
- Many students understand a concept faster when it is explained in the mix of Hindi and English they speak every day. Every answer can be given in Hinglish or in English.
- Built around the syllabus
- Content follows NCERT and state board syllabi for Class 9 to 12, with a focus on Class 10 board exam preparation in Maths, Science and Social Science.
Example
What a step-by-step answer in Hinglish looks like
A typical Class 10 trigonometry question: if sin A = 3/5, find cos A and tan A.
The answer is broken into short steps, each doing one thing, and ends with a check. This is the same layout board examiners give step marks for. The example on the right shows the style; wording in the app can differ.
- sin A = opposite / hypotenuse = 3/5. Matlab opposite side = 3 aur hypotenuse = 5.
- Adjacent side Pythagoras se nikalo: √(5² − 3²) = √(25 − 9) = √16 = 4.
- cos A = adjacent / hypotenuse = 4/5.
- tan A = opposite / adjacent = 3/4.
- Check karo: sin²A + cos²A = 9/25 + 16/25 = 1. Answer sahi hai.
Getting started
From install to your first doubt in a few minutes
Install from Google Play
Lagnever AI is on Android. Download it from Google Play and sign in.
Tell it your class and board
A short setup asks for your class, board and subjects so answers match your syllabus.
Start the 7-day trial for ₹2
Pay ₹2 to unlock every feature for seven days. After the trial the plan continues as a monthly subscription; the price is shown on the payment screen before you pay.
Ask your first doubt
Photograph a question, type it, or start a voice call. Read the steps, then close the app and solve it again on paper yourself.
Price
Try everything for 7 days for ₹2
Lagnever AI has one plan with every feature: photo doubt solving, the voice tutor, exam summaries and flashcards. New students start with a 7-day trial for ₹2. After the trial the plan continues as a monthly subscription with autopay. The monthly price is shown on the payment screen before you pay.
Payments are processed by Razorpay. See the refund policy for how cancellations and refunds work.
FAQ
Questions students and parents ask
Is Lagnever AI free?
No. The app is free to download, but using it needs a plan. New students can start a 7-day trial for ₹2, which unlocks every feature. After the trial it continues as a monthly subscription, and the price is shown before you pay.
Can I ask a doubt by taking a photo?
Yes. Photograph the question and Lagnever AI shows the solution step by step. You can also type the question or ask it on a voice call.
Does it explain in Hinglish?
Yes. Answers can be in Hinglish or English, whichever is easier for you to follow.
Which classes and boards does it cover?
It is built around NCERT and state board syllabi for Class 9 to 12, with most of our work going into Class 10 board exam preparation.
Is it on iPhone?
Not yet. Lagnever AI is available on Android through Google Play.
Will it just give me the answer to copy?
It shows the method one step at a time, so you can see where you went wrong. We recommend reading the steps, closing the app and solving the question again on paper. Our guide on solving Class 10 Maths questions step by step shows how.
Who runs Lagnever AI?
Lagnever AI is a product of Lagnever Technologies Private Limited, based in Rajouri, Jammu and Kashmir. Payments, refunds and data requests are handled through the support and grievance pages on this site.
From the blog
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· Education · 5 min read
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A five-step method for any Class 10 Maths question, with worked examples from quadratic equations, arithmetic progressions and trigonometry.
· Education · 5 min read
How to Make a Study Timetable for Class 10 Board Exams
A simple way to build a Class 10 board exam timetable you can actually follow, with a sample weekly plan and a revision schedule.
Who runs it
Operated by Lagnever Technologies
Lagnever AI is a product of Lagnever Technologies Private Limited. Questions about accounts, data or payments are handled through the support page, and formal complaints through the grievance page. The app also has its own site at lagnever.ai.
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