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One app for your placement.

Learn on video with a tutor you can interrupt and ask questions, clear the online test, optimize your resume, then rehearse the interview. All on one LogicWiz account.

Start free No card needed · works in your browser

LogicWiz is a company based in Bengaluru, India, run by Pooja Goenka, its founder and director. It helps engineers get ready for technical interviews. Its courses in Generative AI, DSA, System Design and Low-Level Design are free, with no card needed. Most lessons have a lab that runs in your browser. When you want to practise out loud, LogicWiz Interviews has free AI mock interviews. About LogicWiz

LogicWiz Tutor

Stuck on a video? Just ask it.

Every lesson is taught on a whiteboard by a real voice. The tutor inside it knows the exact step you paused on.

  • Press D or tap Ask, then say or type your doubt.
  • It answers out loud and draws on the same board.
  • Check-in questions mid-lesson: a wrong try gets a hint, not the answer.
  • Ask in English or Indian languages, and hear the answer in yours.

Everything placement season asks of you.

Learn · logicwiz.ai

Code it in the browser

DSA, Generative AI, System Design, Low-Level Design and Python. Every lesson ends in code you run, judged as you type.

Browse courses
The Code Arena for Course Schedule II: the problem statement, a JavaScript editor and sample test cases.

Exams · exams.logicwiz.ai

Clear the online test

Quant, reasoning, verbal and code-output questions, a Daily 10, timed company-style mocks and a test built from any job description.

Take today’s Daily 10
A Daily 10 question on LogicWiz Exams with four options, a timer and a question grid.

Interviews · interviews.logicwiz.ai

Rehearse with Aria

An AI interviewer for coding, design, behavioural and AI rounds. She follows up on your answers and ends with a scored report. Resume Optimizer tailors your CV to each job.

Practise with Aria
Mock interviews by track on LogicWiz Interviews: AI Readiness, Backend, Behavioural, Data Engineering, DevOps and SRE, Distributed Systems.

FAQ

Questions engineers ask first.

Is LogicWiz free?

Yes. Every lesson in every track is free: Generative AI, DSA, System Design and Low-Level Design, with the in-browser labs and AI hints included. No card is needed. Optional paid plans, Ace at ₹149 a month and Wizard at ₹999 a month, are described on the pricing page and add more practice tests and AI interview practice; they are not required for any lesson. The GenAI certification exam is free.

Which track should I start with?

They are independent, so start with the interview you are preparing for. Coding rounds test Data Structures & Algorithms, so start with the DSA track. AI engineer and GenAI roles ask you to build and reason about agents, RAG, and evals, so start with the Generative AI track. Design rounds ask you to design a system or a set of classes, so start with System Design or Low-Level Design. Many people do more than one.

Do I need to install anything or bring an API key?

Nothing to install. The DSA playground runs and auto-judges JavaScript and Python in your browser, and the Python chapters of the Generative AI course run there too. In the later chapters the labs make real model calls with your own API key: a free NVIDIA key works for most labs, and the embedding and RAG steps need an OpenAI key.

What does the Generative AI track cover?

A growing library of lessons, from Python basics to the current stack: large language models, prompt engineering, tools and memory, the agent loop, retrieval-augmented generation (RAG) with embeddings and chunking, LangChain pipelines and evals, multi-agent systems with LangGraph, conversational and multimodal AI, and the Model Context Protocol (MCP) and A2A agent protocols.

What does the DSA track cover?

A growing library of curated problems across arrays, hashing, two pointers, sliding window, linked lists, stacks and queues, trees, searching and sorting, recursion, dynamic programming, and graphs, each with visual simulations, an in-browser playground with auto-judging, and AI hints tuned to your code.

What do the System Design and Low-Level Design tracks cover?

System Design has lessons on scaling, storage, caching, queues and trade-offs, worked design problems, and a whiteboard that checks your design. Low-Level Design has lessons on OOP, UML class diagrams, SOLID and design patterns, worked problems, and a class diagram designer that exports Java and Mermaid. Both have AI mock rounds on LogicWiz Interviews.

Is LogicWiz only for learners?

logicwiz.ai is the learning product. Your LogicWiz account also works on LogicWiz Interviews (interviews.logicwiz.ai), where you practise mock interviews with Aria and optimise your resume; sign in once and you are signed in on both, and one membership (Spark, Ace or Wizard) covers both. Interviews also serves companies hiring engineers. Exams for institutes runs separately on exams.logicwiz.ai.

Who runs LogicWiz and where is it based?

LogicWiz is a company based in Bengaluru (Bangalore), India. It is run by Pooja Goenka, its Founder & Director. The About page has the details and the company's official profiles.

Is LogicWiz the same as Logic Wiz, the Sudoku app?

No. The Logic Wiz Sudoku and puzzle apps at logic-wiz.com are a separate product. LogicWiz at logicwiz.ai makes a free Generative AI course, LogicWiz Interviews and LogicWiz Exams.