Tezvyn: Tech Interview Prep
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About this app
You are not trying to learn everything. You are trying to crack one interview - fast.
Tezvyn cuts tech interview prep into 60-second cards - small enough to read standing on a metro, waiting in a queue, or in the ten minutes before the call.
Five minutes of dead time a day, instead of the evening you never actually get.
Every interview card answers three things
- What the question is really testing - the thing behind the question
- The answer that lands - a strong answer outline, not a wall of theory
- The red flag - the specific mistake that ends the conversation
Most interview prep hands you a question and an answer. Almost none of it tells you what quietly gets you rejected.
Four kinds of card, all pointed at the interview
Interview cards - real interview questions with model answers and the red flags that sink candidates.
Concept cards - the knowledge underneath, for the ideas you half-know and have never had to defend out loud.
Updates - what changed in your stack recently, because interviewers ask about the thing they read last week.
Quizzes - a question straight after the card, so it moves from recognised to remembered.
8,664 cards across 28 stacks
Frontend interview questions - React and Next.js; Vue, Angular and Svelte; CSS and Design Systems; TypeScript and Web APIs
Backend and databases - Python and FastAPI, Node.js and Express, Go and Rust, Databases and Architecture
AI and ML interview questions - LLMs and Generative AI, Computer Vision, MLOps and Infrastructure, Data Science and Analytics
Mobile - Flutter and Dart, React Native, iOS and Swift, Android and Kotlin
DevOps interview questions - Docker and Kubernetes, Cloud Platforms, CI/CD and Automation, Monitoring and SRE
Product manager interview questions - Product Strategy, Growth and Experimentation, Analytics and Metrics, Agile and Scrum
Design and UX - UI Design and Figma, UX Research, Design Systems, Content and Copywriting
Built for the gaps, not for an evening
- Works offline - one commute is enough
- Twenty cards a day free; swipe, don't study
- Search any stack you are about to be interviewed on
- Save what you keep forgetting and revise it the morning of
- Start reading straight away - no account needed
- Streaks and levels, so five minutes actually happens tomorrow too
Who it is for
Developers, data and ML engineers, mobile engineers, DevOps and SRE, designers and product managers preparing for interviews at startups, product companies and big tech. Whether it is your first developer job or your fifth, the hard part is the same: explaining something you already know, out loud, to someone deciding about you.
What it prepares you for
The round where an interviewer asks you to explain your own stack and listens to how you answer - depth, trade-offs, and the follow-up question after your first answer. Every card is written for that moment rather than for a syllabus.
Free and premium
Twenty cards a day free, no account needed. Premium removes ads and that daily limit: Rs 290 per month or Rs 2,400 per year, cancel anytime.
Every question on the site is free to read at tezvyn.com - the summary on all of them, plus ten full breakdowns a month - so you can check your stack is covered before installing anything.
Questions, or a card that reads wrong: support@tezvyn.com
Tezvyn cuts tech interview prep into 60-second cards - small enough to read standing on a metro, waiting in a queue, or in the ten minutes before the call.
Five minutes of dead time a day, instead of the evening you never actually get.
Every interview card answers three things
- What the question is really testing - the thing behind the question
- The answer that lands - a strong answer outline, not a wall of theory
- The red flag - the specific mistake that ends the conversation
Most interview prep hands you a question and an answer. Almost none of it tells you what quietly gets you rejected.
Four kinds of card, all pointed at the interview
Interview cards - real interview questions with model answers and the red flags that sink candidates.
Concept cards - the knowledge underneath, for the ideas you half-know and have never had to defend out loud.
Updates - what changed in your stack recently, because interviewers ask about the thing they read last week.
Quizzes - a question straight after the card, so it moves from recognised to remembered.
8,664 cards across 28 stacks
Frontend interview questions - React and Next.js; Vue, Angular and Svelte; CSS and Design Systems; TypeScript and Web APIs
Backend and databases - Python and FastAPI, Node.js and Express, Go and Rust, Databases and Architecture
AI and ML interview questions - LLMs and Generative AI, Computer Vision, MLOps and Infrastructure, Data Science and Analytics
Mobile - Flutter and Dart, React Native, iOS and Swift, Android and Kotlin
DevOps interview questions - Docker and Kubernetes, Cloud Platforms, CI/CD and Automation, Monitoring and SRE
Product manager interview questions - Product Strategy, Growth and Experimentation, Analytics and Metrics, Agile and Scrum
Design and UX - UI Design and Figma, UX Research, Design Systems, Content and Copywriting
Built for the gaps, not for an evening
- Works offline - one commute is enough
- Twenty cards a day free; swipe, don't study
- Search any stack you are about to be interviewed on
- Save what you keep forgetting and revise it the morning of
- Start reading straight away - no account needed
- Streaks and levels, so five minutes actually happens tomorrow too
Who it is for
Developers, data and ML engineers, mobile engineers, DevOps and SRE, designers and product managers preparing for interviews at startups, product companies and big tech. Whether it is your first developer job or your fifth, the hard part is the same: explaining something you already know, out loud, to someone deciding about you.
What it prepares you for
The round where an interviewer asks you to explain your own stack and listens to how you answer - depth, trade-offs, and the follow-up question after your first answer. Every card is written for that moment rather than for a syllabus.
Free and premium
Twenty cards a day free, no account needed. Premium removes ads and that daily limit: Rs 290 per month or Rs 2,400 per year, cancel anytime.
Every question on the site is free to read at tezvyn.com - the summary on all of them, plus ten full breakdowns a month - so you can check your stack is covered before installing anything.
Questions, or a card that reads wrong: support@tezvyn.com
Crack your tech interview fast: real questions, model answers, red flags.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
What’s new
Sharper answers to what you actually search:
• Search now matches whole words - searching a stack returns that stack, not lookalikes.
• Quiz answers show in full, one per row, however long they run.
• Onboarding starts you on engineering stacks, and the first card shows the card format instead of describing it.
• Sharing and invites open the app directly.
• Search now matches whole words - searching a stack returns that stack, not lookalikes.
• Quiz answers show in full, one per row, however long they run.
• Onboarding starts you on engineering stacks, and the first card shows the card format instead of describing it.
• Sharing and invites open the app directly.
App support
About the developer
Akash Jain
developinganera@gmail.com
O 161D, smartworld gems
sector 89
Gurugram, Haryana 122505
India
