MockSentry tracks every weak answer across every session and targets those exact gaps next time. Not a question bank. A persistent AI coach.
DSA · HR · System Design · Resume-based · 20+ companies · Fundamentals for all roles.
No credit card · 3 sessions free every week · Cancel anytime
Given an array of integers, find two numbers that add up to a target sum. Return their indices. What is the optimal approach and its time complexity?
⟳ Targeting your weak area: Hash maps — you missed this concept 2 sessions ago
Use a hash map to store each number as you iterate. For each element, check if (target - num) exists in the map. If yes, return both indices. This gives O(n) time and O(n) space...
Live Evaluation
Overall Score
7.9/10
Weak area updated
Hash maps → improving ↗
The problem
You practice for weeks. But in every session — on every platform — you encounter the same concepts you struggled with last time. Because the tools have no memory. They reset. You're starting from zero every single session.
LeetCode tells you a solution is wrong. It doesn't tell you why you keep getting it wrong, or make the next session harder in exactly the right places.
No memory between sessions
Every tool resets. Your weak spots are invisible to it.
No answer evaluation
Most tools tell you right/wrong. Not what was missing from your explanation.
No round-type context
HR questions evaluated the same way as DSA. That is wrong.
No personalised questions
Questions have nothing to do with your résumé or actual experience.
What makes us different
The only mock interview platform where your history doesn't disappear when you close the tab.
Step 1
You answer
Your answer is submitted. The AI evaluates it on 6 dimensions in seconds.
Step 2
It gets embedded
A 1536-dimension vector of your answer is stored in pgvector. Every session. Every answer.
Step 3
Next session adapts
The AI retrieves semantically similar past weak answers and injects them as session context. You cannot avoid your blind spots.
Weak spots are automatically promoted to improving when you score above 6, and marked resolved when you consistently score ≥ 7 across 3+ evaluations. The daily session stops asking resolved topics automatically.
Platform features
Built specifically for interview preparation — not adapted from a generic quiz tool.
Every answer you submit is embedded into a 1536-dimension vector using Gemini Matryoshka embeddings and stored in pgvector. The next session retrieves your semantically weakest past answers and injects that context directly into the AI's question-selection prompt.
→ You cannot repeat the same mistake undetected.
Every morning at 2 AM, Gemini writes 6 fresh questions targeting your active weak spots. Appears on your dashboard. Zero setup.
Upload your PDF résumé. Gemini parses every project and internship. Questions reference your actual work — by name.
Not just right or wrong. Every answer scored on Correctness (30%), Depth (25%), Clarity (20%), Communication (15%), and Completeness (10%). Displayed as a radar chart in your debrief.
Speak your answers. Web Speech API with Groq Whisper fallback. Switch between voice and typing mid-answer without losing content.
HR · Technical · System Design · Complete. Each evaluated differently. The AI knows which round you're in.
Narrative summary, radar chart, score timeline, 3-item action plan, and model solutions per question — what you missed, why, and how to fix it.
Your overall placement readiness score as a percentage, calculated from session history, weak spot resolution, and streak. Download as a PNG and share on LinkedIn. Weekly email reports every Sunday morning.
MockSentry
Placement Readiness
78%
Four ways to practice
All four entry points feed the same evaluation pipeline and contribute to your weak spot profile.
24 companies across Indian product & service companies and FAANG. Card-based progression — finish Card 1 to unlock Card 2. Progress tracked per company per round.
Universal fundamentals every engineer should know — regardless of role or company. OS, DBMS, Computer Networks, OOP, clean code principles.
Upload your résumé → AI reads your actual projects → asks you about what you built. The most realistic simulation of a real technical interview you can get.
A fresh 6-question session every morning, written by AI specifically targeting your top 3 active weak spots. Resolved topics stop appearing automatically.
The process
Six steps from signup to placement-ready.
Sign up and onboard
Tell us your role target, experience level, and placement month. Takes 90 seconds.
Your profile drives how questions are selected and how progress is measured.
Pick your session type
Company-specific card, Interview for All, resume-based, or daily AI session.
All four entry points feed the same evaluation pipeline.
Answer — type or speak
The AI asks questions and natural follow-ups. Type your answer or speak it.
Voice input supported with real-time transcription. Code block toggle for DSA.
Get scored instantly
6-dimension evaluation by Gemini within seconds. Follow-up questions if you score < 6.
Correctness 30% · Depth 25% · Clarity 20% · Communication 15% · Completeness 10%
Review your debrief
Full session narrative, radar chart, action plan, and model solutions per question.
Debrief generates in background — available within 30 seconds of session end.
The AI adapts
Your answers are embedded and stored. Next session targets exactly what you missed.
Topics are resolved automatically once you score ≥ 7 across 3+ evaluations.
Why MockSentry
Here's exactly what makes the difference.
Free
₹0
3 sessions/week, always
Pro
₹199
/month · unlimited sessions
Placement Pack
₹499
one-time · 3 months
No paywalls on day one. Full free tier available. All purchases are final — try free first.
See full plan comparison →Questions
Honest answers to everything before you start.
The persistent RAG memory. Every answer you submit is converted into a vector embedding and stored. Before your next session, the system retrieves your semantically weakest past answers and tells the AI to target those exact patterns. No other mock interview tool does this.
SDE Fresher, SDE Experienced, Data Analyst, Frontend Developer, and DevOps/Cloud. Round types: HR, Technical, System Design, and Complete. You can also do "Interview for All" — universal CS fundamentals that apply regardless of company or role.
Built with Indian placement patterns in mind, but the platform is useful for anyone preparing for technical interviews. It covers FAANG-level system design and DSA alongside service company patterns.
Powered by Google Gemini. Evaluates on 6 dimensions with round-type awareness. HR answers are never scored on time complexity. System design answers are judged on architecture and trade-offs. The evaluation is tuned specifically for interview context, not just grammar.
"Interview for All" contains universal CS fundamentals — Operating Systems, DBMS, Computer Networks, OOP, and DSA basics — that every engineer is expected to know regardless of company or job role. These questions are not tied to any specific company.
Gemini parses your PDF résumé and extracts every project name, tech stack, internship, certification, and achievement. Your interview session then references your actual work — "Walk me through the caching layer you built in your e-commerce project." It is the closest thing to a real technical interview.
3 sessions per week, basic debrief (scores only), and access to all session types. No credit card required. The free tier is intentionally generous — use it to fully evaluate the platform before deciding to upgrade.
All purchases are final because a full-featured free tier is available before you commit. If you believe there was a technical error or duplicate charge, email anuragkr8651@gmail.com and we review every case individually.
Start today
3 free sessions, no credit card, and an AI that remembers every answer you've ever given. Most people are improving by session 3.
Free forever tier available · No card required · Cancel paid plans anytime