It teaches the way you need to understand things. Not the way a textbook explains to everyone.
| 00:00 | You | Why does ice float on water? My teacher just said density but I still do not get it | |
| 00:04 | Tcher | Water is one of the only things on earth that expands when it freezes. Think of liquid water molecules like people in a crowded market, packed close. Ice molecules are those same people sitting in fixed chairs in a pattern, taking up more space even though there are the same number of them. liquid water → freezes → ice lattice → less dense → floats | Calibrated: Grade 9 Real-life anchor |
| 00:31 | Tcher | Now try this: if ice sank instead of floated, what would happen to fish in a frozen lake? | Checks the concept landed |
| 00:32 | You | Awaiting your answer ▍ |
Not because you are not smart. Because no explanation was ever built for you, at your level, with examples from your world. Every textbook and every video was made for everyone, which means it was made for no one in particular.
“I spent an hour watching videos and still do not understand it. The teacher explained it so fast and moved on.”
You know the content cold. What you need is the entry point that creates genuine curiosity, the exact place this grade will stumble, and the correction that actually works. That knowledge lives in decades of classroom experience.
“I always know what to teach. I do not always know the best way to teach it to this particular group today.”
Tcher becomes a different teacher depending on who is asking. Same engine, six calibrations.
Explains like a smart older sibling. Starts from what you know, uses examples from your daily life.
Knows your branch and semester. Examples from your domain. Builds from first principles, never definitions first.
Your teaching partner. The perfect lesson opener, where students will stumble, and the correction that works.
Peer-level dialogue. Pedagogical research, assessment design intelligence, and current industry connections.
JEE, NEET, and Board Exam prep. Timed practice, pattern-based questions, speed and accuracy under pressure.
Campus placement and technical interview prep. Think-aloud practice, real company patterns, gap analysis.
Two modes, eight features, one platform that knows who you are: grade, branch, and semester.
Explains any concept at your exact level. Starts from what you know, builds to what you need. Real examples from your world.
Hear any explanation spoken aloud in English, Hindi, Kannada, Tamil, Telugu, Marathi, or Malayalam. Switch languages mid-session without losing context. More languages coming soon.
Scenario-based questions that test understanding, not recall. Wrong answers trigger a targeted explanation before the next question.
Revision-ready notes from your session, enriched with full topic knowledge. Built for the night before an exam.
Real-world tasks requiring genuine thinking. Domain-anchored, with a rubric that defines what excellent work looks like.
Names the exact misconception behind every error. Tells you what your answer reveals and gives one precise next step.
Get an alternative perspective by switching between AI models mid-session. Same question, different reasoning style.
After every quiz and assignment, Tcher analyses your pattern of errors and generates personalised study tips built from your actual performance data.
Your grade, branch, and semester. 30 seconds at signup. Everything from that point is calibrated to you.
From this point on, every explanation uses CS examples at Sem 6 depth.
A concept that does not click. A question from your textbook. A topic you need to teach. No special formatting needed.
I do not understand OS deadlock detection. My exam is next week.
Gap: conceptual. Urgency: exam in 1 week. Aligns to: VTU 22CS61 Module 3.
A real-life hook, a clear explanation built from first principles, and a question back to check the concept actually landed.
Think of Zomato assigning delivery agents. If two agents wait on each other to free a zone, neither moves. That is a deadlock.
Take a quiz that finds your exact gap. Generate revision notes. Go deeper on anything that needs it.
In Banker's algorithm, a system is in safe state if a safe sequence exists. Which condition does this prevent?
Starvation
Most AI tools answer your question. Tcher does something harder: it makes sure you actually understood the answer.
Grade 8 and 4th-semester engineers get fundamentally different responses to the same concept. Different depth, different examples, different expectations.
A CS student learns through Zomato's system. A school student learns through cricket scores. Your world, every single time, not a textbook's generic world.
Every explanation can be spoken aloud in seven Indian languages: English, Hindi, Kannada, Tamil, Telugu, Marathi and Malayalam. If reading is not working, listening might. Switch languages without leaving the session.
Every response ends with a question back to you. Not to test you, but to make sure the concept moved from words on screen to something you can actually use.
Feedback from students and teachers during our early testing phase across India.
I asked about Newton's third law and it compared it to pushing a wall during a basketball game. I finally got it. My textbook never once mentioned basketball.
The part where it tells me exactly where my students will get confused is genuinely useful. I have been teaching 11 years and it still showed me angles I had not considered.
It knew I was in CS 6th semester and explained OS deadlocks using Zomato delivery agents. That was the first time the concept actually made sense to me.
Start free and learn any concept at your level. Upgrade when you are preparing to clear an exam. Bring Tcher to your whole institution with Pro Plus.
For individual learners. Everything you need to actually understand your subjects.
For serious exam preparation. Everything in Light, plus the tools to clear the exam.
For schools, colleges and coaching institutes. Everything in Pro, for your entire institution, with full teacher and admin control.
Pro pricing is being finalised. Free during beta, no credit card required.
Every feature, mapped across the three plans.
| Feature | LightFree | ProIndividual | Pro PlusInstitutions |
|---|---|---|---|
| Learning | |||
| Adaptive AI tutor (all personas) | ✓ | ✓ | ✓ |
| Get Explanation: teaches, not reads | ✓ | ✓ | ✓ |
| Text-to-speech, localised tone | ✓ | ✓ | ✓ |
| Indian languages (7, more soon) | ✓ | ✓ | ✓ |
| Download explanation as MP3 | ✓ | ✓ | ✓ |
| Automated follow-up questions | ✓ | ✓ | ✓ |
| Study Tools | |||
| Save responses as notes | ✓ | ✓ | ✓ |
| Generate notes (full conversation) | ✓ | ✓ | ✓ |
| Generate quizzes | ✓ | ✓ | ✓ |
| Generate assignments | ✓ | ✓ | ✓ |
| Generate question papers | ✓ | ✓ | ✓ |
| My Workspace | ✓ | ✓ | ✓ |
| Exam Preparation | |||
| Previous years’ question papers | – | ✓ | ✓ |
| Mock examinations | – | ✓ | ✓ |
| Answer keys for question papers | – | ✓ | ✓ |
| Pro tips (quiz & assignment) | – | ✓ | ✓ |
| Mock interviews (Engg & MBA) | – | ✓ | ✓ |
| Priority access to higher, faster models | – | ✓ | ✓ |
| Competitive exam tracks (JEE, NEET) | – | ✓ | ✓ |
| AI-generated surprise challenges | – | ✓ | ✓ |
| Institution | |||
| Admin & teacher logins | – | – | ✓ |
| Class, subject & student mapping | – | – | ✓ |
| Syllabus mapping & completion tracking | – | – | ✓ |
| Teacher-created assessments | – | – | ✓ |
| Student performance tracking | – | – | ✓ |
| Start free | Go Pro | Book a demo |
Free during beta. Takes two minutes. Tcher calibrates to your exact grade, branch, and level from the moment you sign up.