Stop collecting Start closing
crackalgo is a free DSA sheet tracker and coding profile dashboard for software engineering interview prep. Keep the sheet you trust — we track everything around it.
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01//The dashboard
Live dataEvery platform you already grind on, pulled into one page — solved counts, active days, submission heatmap and contest ratings, without opening six tabs to find them.
My Progress
What you have ticked off inside crackalgo — daily consistency and per-sheet progress.
Detail Analytics
Where your time is actually going. Set a daily target and watch the streak hold.
Synced//Your stats, pulled from every platform you already grind on
LeetCode
CodeForces
CodeChef
GeeksForGeeks
HackerRank
CodeStudio
GitHub0
Companies covered
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DSA sheets tracked
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Interview questions
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Aptitude questions
02//The library
Your unfair
advantage starts here
Ditch the scattered tabs, half-finished playlists and endless bookmark lists. Five ways crackalgo replaces the mess with one dashboard that remembers exactly where you left off.
DSA Sheets
Curated sheets from the educators you already follow
Striver, Love Babbar, NeetCode, Blind 75 and more — every sheet in one place, with your progress ticked off problem by problem.
Company Wise DSA
Target the company you actually want
Question sets curated for 149 tech companies, from Google and Meta to the startup that just emailed you back.
Role & Stack
Practise by role, not just by topic
Frontend, backend, mobile, game, Web3, embedded — each role lists the topic areas an interviewer will walk through.
System Design
The rounds sheets usually skip
22 HLD and 10 LLD problems with the companies that ask them, plus full playlists for the fundamentals underneath.
Notes & Outreach
Study notes, ready to use
26 curated references — the canonical docs, books and handwritten guides for each topic.
03//How it works
From scattered tabs to one dashboard
No signup wall, no trial clock, no locked tier. Four steps and everything you do is tracked from then on.
Connect your profiles
Sync LeetCode, Codeforces, CodeChef, GeeksforGeeks, HackerRank and GitHub in a minute. Every stat updates itself from there.
Pick your sheet
Striver, Love Babbar, Blind 75, NeetCode 150 — or skip straight to company-wise or role-wise, whatever the next round needs.
Track it problem by problem
Every checkbox, streak and topic breakdown saves to your account and follows you across every device you open it on.
Walk in prepared
System design, core CS, aptitude, and HR questions — waiting for the rounds sheets don't cover.
04//Everything, already inside
No add-ons, no locked tiers
05//The difference
Same hours.
Far less friction.
Nothing here asks you to study more. It asks you to stop losing time to the admin around studying — the tab-hunting, the re-counting, the spreadsheet you abandoned in week three.
Without crackalgo
The scattered way
- Six tabs open just to see where you left off
- Progress tracked in a spreadsheet you stop updating
- Solved counts scattered across LeetCode, Codeforces, GitHub
- Grinding random problems and hoping they overlap
- System design, SQL and core subjects left to the week before
- Contest dates found out about the morning after
- Guessing which problem to do next, every single day
- Notes in one app, problems in another, bookmarks in a third
- Months of work with nothing to show for it but a screenshot
- Contest rating moves and you work out why days later
- Prep tools stop at the problem and leave you the job hunt
- Hitting a paywall the moment it gets useful
With crackalgo
One place, start to offer
- One dashboard that remembers, across every platform
- Sheet progress ticked off problem by problem, saved as you go
- Every profile synced into one page — counts, streaks, ratings
- Company-wise sets for 149 companies, and role-wise by stack
- HLD, LLD, SQL, DBMS, OS, CN, aptitude and HR in the same tracker
- A calendar for every judge, in one place
- A prep path built from your target company, role and timeline
- Custom sheets, notes and bookmarks in one workspace
- A live badge for your GitHub README that updates itself
- A rating predictor that shows the change before it posts
- Cold-email templates, off-campus openings and company research
- Free, no signup — all of it, permanently
06//Stories
Students who
cracked it with crackalgo
Aarav Sharma
SDE Intern · Amazon
“The company-wise sheet was the whole game. Three of the problems I revised the night before showed up almost verbatim in my loop.”
Divya Menon
SDE Intern · Adobe
“Role-wise questions meant I stopped grinding things my round would never ask. React, Node and a bit of design — exactly what came up.”
Rahul Verma
Analyst · Accenture
“Coming from a non-CS background, the notes broke every fundamental down into something I could actually hold in my head.”
Fatima Khan
SDE 1 · Cognizant
“The HR sheet is underrated. Sixty-odd questions sorted by type, with sample answers — I walked into the round with nothing left to improvise.”
Arjun Nair
SDE Intern · Swiggy
“One coding round, one technical, done. The graph and BFS/DFS set covered it end to end.”
Pooja Gupta
Data Analyst · HCL
“I spent most of my prep in the SQL sheet — window functions and CTEs were exactly what they drilled me on.”
Karan Malhotra
SDE Intern · Flipkart
“The OS and DBMS crash notes saved me twice — once in the written test, once when the interviewer went off-script.”
Neha Iyer
SDE 1 · Zoho
“I liked that it wasn't just LeetCode links. The pattern write-ups meant I actually recognized the shape of a new problem.”
Vikram Rao
SDE Intern · Paytm
“System design basics for interns is a section most sheets skip. It's the reason I didn't freeze when they asked me to design a rate limiter.”
Aarav Sharma
SDE Intern · Amazon
“The company-wise sheet was the whole game. Three of the problems I revised the night before showed up almost verbatim in my loop.”
Divya Menon
SDE Intern · Adobe
“Role-wise questions meant I stopped grinding things my round would never ask. React, Node and a bit of design — exactly what came up.”
Rahul Verma
Analyst · Accenture
“Coming from a non-CS background, the notes broke every fundamental down into something I could actually hold in my head.”
Fatima Khan
SDE 1 · Cognizant
“The HR sheet is underrated. Sixty-odd questions sorted by type, with sample answers — I walked into the round with nothing left to improvise.”
Arjun Nair
SDE Intern · Swiggy
“One coding round, one technical, done. The graph and BFS/DFS set covered it end to end.”
Pooja Gupta
Data Analyst · HCL
“I spent most of my prep in the SQL sheet — window functions and CTEs were exactly what they drilled me on.”
Karan Malhotra
SDE Intern · Flipkart
“The OS and DBMS crash notes saved me twice — once in the written test, once when the interviewer went off-script.”
Neha Iyer
SDE 1 · Zoho
“I liked that it wasn't just LeetCode links. The pattern write-ups meant I actually recognized the shape of a new problem.”
Vikram Rao
SDE Intern · Paytm
“System design basics for interns is a section most sheets skip. It's the reason I didn't freeze when they asked me to design a rate limiter.”
07//Answers
Frequently asked
questions
More questions about how your data is stored or where the numbers come from? Visit the Help Center.
08//Inside
Everything you need
in one place
DSA sheets, tracked in the browser
51 curated sheets — Striver A2Z, Love Babbar 450, Blind 75, NeetCode 150, CP-31 and more — totalling 6,899 problems. Tick a problem and it stays ticked, with no account and nothing behind a paywall.
Browse DSA sheetsCompany-wise interview questions
Question sets for 149 companies, from Google, Amazon and Meta to TCS, Infosys, Flipkart and Zomato. Each one is grouped by the patterns that company leans on most, so the first sections are the ones worth your time.
Browse company-wise questionsThe 22 patterns behind almost every problem
Sliding window, two pointers, monotonic stack, graphs, dynamic programming and the rest — each with a written guide covering when it applies, the template that solves it, and the mistakes that cost people the round.
Explore the 22 DSA patternsCore CS subjects and topic question banks
DBMS, Operating Systems, Computer Networks and OOPS, plus banks for JavaScript, React, Python, Java, Kubernetes, Docker, AWS and twenty more — the theory round that candidates strong at DSA routinely lose.
Browse interview question banksSystem design, SQL and role-specific prep
HLD and LLD problems worked end to end, a SQL sheet with solutions, and question sets organised by role for frontend, backend, data, DevOps, SRE, mobile and ML engineers.
Open the system design sheetPlacement guides for the process itself
The half of interview prep that is not technical: how placement drives actually run, off-campus strategy, the TCS NQT, service-based versus product-based companies, and what to expect from AI-assisted coding rounds.
Read the placement guides