All-in-one Interview Prep Platform

Land the
<tech job>
you've earned.

One platform for everything — curated DSA sheets, company prep guides, creator roadmaps, video tutorials and prep with friends with a full progress tracker.

Start for Free Explore Tracker

500+DSA Problems

20+Prep Guides

15+Creator Sheets

200+YouTube Tutorials

30+Company Prep

1.0k+Prep with Friends

Today's Progress

62%

Topics done

+12% this week

DSA Tracker3/5 done

Two SumArray

Binary SearchSearch

Merge SortSorting

LRU CacheDesign

Word LadderBFS/DFS

Problem Solved!

Binary Search · Easy

🔥 5 day streak

Platform Features

Everything you need
to land the offer

No more juggling between tabs. Every tool, every resource, in one focused platform.

Core Features

30+

Companies

450+

Problems

Track Progress

DSA Tracker

Interactive progress dashboard covering Arrays, Trees, Graphs, DP and every core topic. See exactly where you stand with topic-level completion rings and daily streaks.

Open Tracker

450+

Problems

Topics

Daily

Streaks

100%

Trackable

Topic-wise progress rings
Daily goal tracking
Favorites & notes
Multi-topic roadmap

Always Available

StackMastery AI

An AI coding assistant available on every page — DSA tracker, creator sheets, company prep, and interview planner. Ask questions, get explanations, understand concepts instantly.

Available on every page
Context-aware responses
Explains DSA, algorithms & design
Expandable full-screen mode

Try the AI

Interview Ready

Interview Prep Guides

Company-wise interview playbooks for Google, Amazon, Microsoft, and 30+ top companies. Role-specific guides with must-know topics, round structures, and insider tips.

Company-wise playbooks
Role-specific guides
Round-by-round breakdown
Trending interview topics

Browse Guides

Curated Content

Creator Sheets

Top problem sets by Striver, Love Babbar, Padho with Pratyush and more — directly embedded as interactive trackers so you can mark progress without leaving the platform.

Striver A2Z & SDE Sheet
Love Babbar 450
Custom creator trackers
Linked problem solutions

Start a Sheet

Targeted Prep

Company Prep

Complete interview systems for Amazon, Microsoft, and top product companies. Get a custom roadmap, company-specific question banks, and AI mock interviews.

Company-wise roadmaps
Curated question banks
Voice AI Mock Interviews
Readiness scoring

Cracking Now

Learn by Watching

Video Tutorials

Hand-picked YouTube playlists from the best creators, organized by topic and difficulty. Resume where you left off with per-video progress tracking.

Curated YouTube playlists
Per-video completion
Resume watching
Topic-organized library

Watch Now

Collaborative

Prep with Friends

Join study rooms, tackle daily challenges together, and climb live leaderboards. Stay accountable and motivated with your prep squad.

Shared study rooms
Daily challenge sets
Live leaderboard
Real-time activity feed

Join a Room

AI-Powered

Interview Planner

Tell the AI your company, role, and weak spots — it generates a full day-by-day prep schedule with study, mock, and revision sessions tailored to your interview date.

Plan My Interview

How it works

Set Your Goal

Company, role & date

AI Builds Plan

Day-by-day schedule

Daily Practice

Guided study sessions

Land the Offer

Arrive fully prepared

AI-generated day-by-day scheduleMock interview & revision daysDaily email reminders at 8 AMProgress tracking per plan

AI-Powered

AI Mentor

A personal senior mentor and mock interviewer that remembers your goals across sessions. Get adaptive teaching, resume and career coaching, and realistic mock interviews tailored to your target role and skill level.

Meet Your Mentor

What it does

Remembers your profile & goals

Realistic mock interviews

Adaptive teaching by skill level

Saved chat history

Complete Interview System

Not just practice —
a complete system

Company Prep gives you a personalized roadmap, curated question banks, Voice AI mock interviews, readiness scoring, and smart guidance — all in one place.

Phase 1 — Prepare

Choose Company

Pick from Amazon, Microsoft, TCS, Infosys, Accenture — see interview rounds, difficulty & focus topics.

Personalized Roadmap

Get a custom study plan with topics, order of study, and estimated completion timelines.

Question Bank

40–60 handpicked DSA questions per company with difficulty, topic tags, and why it matters.

interview phase begins

Phase 2 — Interview

Voice AI Interview

Speak with an AI interviewer that asks DSA questions, dynamic follow-ups, and runs on a live timer.

Score Dashboard

Get scored on communication, problem-solving, and optimization. See your strengths and weaknesses.

Next Step Guidance

AI tells you exactly what to do next: "Practice 5 Graph problems + 2 mock interviews to be ready."

Free vs Premium

Companies1 onlyAll 5

Question Bank10–15 questions40–60 per company

AI Mock Interviews1 per dayUnlimited

Readiness ScoreBasic onlyFull insights

Feedback Analysis—Deep breakdown

Next Step AI—Personalized guidance

FreePremium

🚀

Ready to crack it?

Join thousands of engineers who used this system to land offers at top product companies.

Start Free View Premium →

No credit card required for free plan

Collaborative Learning

Prep together, win together

Stop prepping alone. Join study rooms with friends, compete on live leaderboards, and stay accountable with daily challenges.

Study Rooms

Join admin-managed rooms and grind alongside your squad with shared daily goals and invite codes.

Daily Challenges

Tackle curated problem sets every day. Problems unlock sequentially — keeping competition fair.

Live Leaderboard

+10 pts per problem solved, +20 bonus for finishing the full daily set. Climb the ranks.

Activity Feed

Real-time updates as friends complete problems, hit milestones, and join the room.

Join a Room Browse Rooms →

DSA Grind Squad

4 members · 3 problems today

LIVE

ChallengesLeaderboardFeed

🥇Arman A.3/3ALL ✓340pts

🥈Zaweel A.2/3280pts

🥉Jayash B.2/3250pts

#4You1/3200pts

Today's Challenges

✓

Two SumEasy

✓

Longest Substring Without RepeatingMedium

Binary Tree Maximum Path SumHard

+20 pts bonus!

Ready to stop prepping solo?

Create or join a room — it's free for everyone.

Daily

Challenges

Live

Leaderboard

Free

To Join

Get Started Free

Community Feedback

Loved by top engineers

Join thousands of developers who have leveled up their careers with StackMastery.

Rahul Sharma

@rahul_codes

"The Voice AI Mock Interview felt like a real recruiter grilling me. After 3 weeks on this platform I cracked my Amazon SDE-1 interview. Highly recommend it."

SDE-I @ Amazon

Sneha Patel

@sneha_dev

"StackMastery is the most structured DSA prep I've used. No more juggling random YouTube links — everything is in one place with proper roadmaps."

SDE @ Google

Arjun Mehta

@arjun_swe

"The company-specific playbooks are genuinely accurate. The Microsoft round breakdown matched my actual interview experience almost exactly."

SDE-II @ Microsoft

Divya Nair

@divya_builds

"Prep with Friends changed how I study. Having a live leaderboard with my college friends made grinding Leetcode actually enjoyable."

Backend Engineer @ Flipkart

Rahul Sharma

@rahul_codes

"The Voice AI Mock Interview felt like a real recruiter grilling me. After 3 weeks on this platform I cracked my Amazon SDE-1 interview. Highly recommend it."

SDE-I @ Amazon

Sneha Patel

@sneha_dev

"StackMastery is the most structured DSA prep I've used. No more juggling random YouTube links — everything is in one place with proper roadmaps."

SDE @ Google

Arjun Mehta

@arjun_swe

"The company-specific playbooks are genuinely accurate. The Microsoft round breakdown matched my actual interview experience almost exactly."

SDE-II @ Microsoft

Divya Nair

@divya_builds

"Prep with Friends changed how I study. Having a live leaderboard with my college friends made grinding Leetcode actually enjoyable."

Backend Engineer @ Flipkart

Rohan Gupta

@rohan_gupta

"The System Design section is solid gold. LLD and HLD are explained better here than any paid Udemy course I've bought. Worth every rupee."

Software Engineer @ Razorpay

Ananya Reddy

@ananya_tech

"I love the clean UI — it actually makes you want to sit and study. The dark emerald theme is so easy on the eyes during long prep sessions."

Frontend Dev @ PhonePe

Karan Joshi

@karan_joshi

"The Job Board is a brilliant addition. I go from revising a DP problem to applying for a relevant opening without switching tabs. Saves so much time."

SDE @ Atlassian

Pooja Iyer

@pooja_iyer

"OOPS and DBMS guides here are the best free resource I found for core subject rounds. Cracked Infosys SP and got a Wipro offer in the same month."

Software Engineer @ Infosys

Rohan Gupta

@rohan_gupta

"The System Design section is solid gold. LLD and HLD are explained better here than any paid Udemy course I've bought. Worth every rupee."

Software Engineer @ Razorpay

Ananya Reddy

@ananya_tech

"I love the clean UI — it actually makes you want to sit and study. The dark emerald theme is so easy on the eyes during long prep sessions."

Frontend Dev @ PhonePe

Karan Joshi

@karan_joshi

"The Job Board is a brilliant addition. I go from revising a DP problem to applying for a relevant opening without switching tabs. Saves so much time."

SDE @ Atlassian

Pooja Iyer

@pooja_iyer

"OOPS and DBMS guides here are the best free resource I found for core subject rounds. Cracked Infosys SP and got a Wipro offer in the same month."

Software Engineer @ Infosys

Frequently asked questions

Everything you need to know before you start your prep journey.

Yes — core features including the DSA tracker, roadmap, prep guides, and curated problem sheets are completely free. No credit card required.

LeetCode gives you problems. StackMastery gives you a system — structured roadmaps, company-specific playbooks, progress tracking, daily goals, and curated sheets all in one place so you always know what to study next.

You can explore the roadmap and browse content without an account. Creating a free account unlocks progress tracking, daily goals, favorites, and personalized prep sheets.

We cover top-tier companies including Google, Amazon, Meta, Microsoft, Apple, and many more. Each company prep guide includes frequently asked topics, role-specific patterns, and recent interview insights.

Topics are sequenced from fundamentals to advanced — arrays, strings, hashing, two pointers, sliding window, trees, graphs, dynamic programming, and beyond. Each topic links directly to curated problems and explanations.

Absolutely. StackMastery is fully responsive and works great on mobile, tablet, and desktop — so you can review concepts or check off problems from anywhere.

We continuously update problem sheets, company guides, and prep content based on recent interview reports and community feedback so you're always preparing with current, relevant material.

Start Today — It's Free

Your next offer is one prep session away

Join thousands of developers using StackMastery to prepare smarter, track their growth, and crack interviews at top companies.

Start Learning Now Explore First

10k+Developers

500+DSA Problems

30+Companies

FreeCore Features

No credit card required · Free forever for core features

StackMastery

Land the<tech job>you've earned.

Everything you needto land the offer

DSA Tracker

StackMastery AI

Interview Prep Guides

Creator Sheets

Company Prep

Video Tutorials

Prep with Friends

Interview Planner

AI Mentor

Not just practice —a complete system

Choose Company

Personalized Roadmap

Question Bank

Voice AI Interview

Score Dashboard

Next Step Guidance

Free vs Premium

Ready to crack it?

Prep together, win together

Study Rooms

Daily Challenges

Live Leaderboard

Activity Feed

Loved by top engineers

Rahul Sharma

Sneha Patel

Arjun Mehta

Divya Nair

Rahul Sharma

Sneha Patel

Arjun Mehta

Divya Nair

Rohan Gupta

Ananya Reddy

Karan Joshi

Pooja Iyer

Rohan Gupta

Ananya Reddy

Karan Joshi

Pooja Iyer

Frequently asked questions

Your next offer is one prep session away

Everything you needto land the offer

DSA Tracker

StackMastery AI

Interview Prep Guides

Creator Sheets

Company Prep

Video Tutorials

Prep with Friends

Interview Planner

AI Mentor

Not just practice —a complete system

Choose Company

Personalized Roadmap

Question Bank

Voice AI Interview

Score Dashboard

Next Step Guidance

Free vs Premium

Ready to crack it?

Prep together, win together

Study Rooms

Daily Challenges

Live Leaderboard

Activity Feed

Loved by top engineers

Rahul Sharma

Sneha Patel

Arjun Mehta

Divya Nair

Rahul Sharma

Sneha Patel

Arjun Mehta

Divya Nair

Rohan Gupta

Ananya Reddy

Land the
<tech job>
you've earned.

Everything you need
to land the offer

Not just practice —
a complete system

Everything you need
to land the offer

Not just practice —
a complete system