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AI-driven prep for Indian competitive exams

AI that knows where you'll lose marks, before you do.

TestCrux generates personalized tests around your weak topics, explains every mistake step-by-step, and tracks your growth in real time. Built for SSC, Banking, UPSC, JEE, NEET, GATE and more.

10,000+ aspirants8 exams · growingAvg. score lift +18%
AI Insights
analyzing…updated 2s ago

Accuracy trend · last 7 weeks

78%+9%

+12% vs last week
80%60%40%
W1W2W3W4W5W6W7
78%

Overall

Accuracy

across 142 attempts

Topic strength

  • Quant82%
  • Reasoning71%
  • English65%
  • GK58%
  • You're 23% faster on Quant than last week.
  • Focus on Time-Speed-Distance. 4 weak topics detected.
  • Predicted percentile 86.4 if you keep this pace.

AI-generated test

20 Qs · tuned to your weak topics

Ready

160+

Exams Covered

8,000+

Mock & PYQ Tests

8L+

Practice Questions

100+

New Questions Daily

Fresh content added daily
Watch the demo

See how TestCrux works

A quick walkthrough of a full attempt: take a mock test, ask CruxAI for help on a question you are stuck on, then read the report that tells you exactly what to fix next.

More walkthroughs on our YouTube channel.

CruxAI · Available now

AI that helps you learn, not just hands you the answer

Get a gentle nudge when you are stuck. Finish a test and see a report made just for you. Then go back through every question with clear, step-by-step help. No shortcuts, no spoilers, just a study partner who wants you to actually get it.

In-test helper

Stuck? Tap a chip — never see the answer

Six structured prompts: Hint, Concept, Shortcut, Eliminate options, Mnemonic, Formula. Test Mode is locked — the AI literally cannot leak the correct option.

HintConceptShortcutEliminateMnemonicFormula
CruxAI hintNo answer leaked
CruxAI Report

A diagnostic that knows your test

Submit any attempt and get a full breakdown: topic mastery, time-vs-accuracy, your biggest leak, and a prioritized 3-step plan. Generated once per attempt — yours forever.

CruxAI ReportSSC CGL · Mock 04
Time & Work82%
Profit & Loss64%
Geometry38%
DI71%

Biggest leak: Geometry — −12 marks lost

Review mode

Walk through every wrong answer

In review, three chips replace the silent answer key: Review my answer, Explain the correct method, and Diagram for visual problems. Math, LaTeX and figures, rendered inline.

Review my answerExplainDiagram
Why your answer was wrong
  1. You used the diameter — formula needs radius
  2. Apply A = π r²
  3. Correct value: 154 cm²

See it in action

Watch CruxAI work, screen by screen

These are real screens from TestCrux — the same CruxAI you get on every question and after every test.

In-test helperAvailable now

Help on every question — while you're still solving

Stuck mid-test? Open CruxAI right on the question, tap a card, and watch a focused answer stream in — then dig in with a follow-up. In Test Mode it never reveals the answer.

  1. 1Tap "Ask CruxAI" on any question
  2. 2Pick a card — Hint, Explain the concept, Related formula, Eliminate options
  3. 3Read the streamed reply, then tap “Go deeper” or “Explain differently” to follow up
Animation of CruxAI answering a question and a follow-up, streaming the explanation in
CruxAI ReportAuto-generated per attempt

One report that reads your entire test

Submit any attempt and CruxAI writes a full diagnostic — an executive verdict, your strengths and watch-outs, topic mastery, time allocation, difficulty, and a prioritized roadmap.

  1. 1Finish and submit any mock or PYQ test
  2. 2CruxAI analyses every answer, topic, and time split
  3. 3Move through Verdict, Topics, Time, Difficulty and Roadmap — each with its own chart
CruxAI Report on mobile showing the executive verdict, strengths and watch-outs

Everything Included

The foundation CruxAI sits on

Real exam UX, time intelligence, and reliability — the essentials, done right.

Real Exam Interface

Exact NTA, TCS iON, and IBPS layout: 5-color question palette, section tabs, mark-for-review, and navigation. Exam day feels familiar.

Time Intelligence

Per-question time tracking, overtime alerts, and time-vs-accuracy plots. CruxAI flags questions where you spent too long on the wrong path.

Configurable Tests

Pick difficulty per section, filter topics, choose timed or practice mode, enable section locking, or let AI build it for you in one tap.

Bilingual by Default

Switch between English and Hindi mid-test without losing progress. Full bilingual coverage on questions, options, and AI explanations.

Never Lose Progress

Auto-save every 15 seconds, crash recovery, and offline resilience. Close your browser mid-test and pick up right where you left off.

Verified Question Bank

Previous-year papers, expert-curated mocks, and AI-generated practice, all reviewed by subject experts before they reach you.

The Difference

Why Aspirants Choose TestCrux

Most platforms give you a score and move on. TestCrux runs an AI diagnostic on every attempt, so every test is a learning opportunity, not just a number.

“Other platforms say: Score 156/200”

TestCrux AI says: “156/200. Your Data Interpretation accuracy dropped 18% vs last test. You lost 12 marks to negative marking on easy questions. I've generated a 20-question DI bar-chart drill. Start it now.”

FeatureTestCruxOthers
AI-personalized tests around your weak topics
Step-by-step AI solutions for every wrong answer
Real exam interface (NTA / IBPS layout)
Topic-wise heatmap with priority ranking
Per-question time tracking & analysis
Negative marking impact breakdown
Crash recovery & auto-savePartial
Hindi + English bilingual tests

CruxAI Pro

Coming soon

What Pro will unlock for serious aspirants

These are the features we are building to turn your mock scores into real rank confidence. They are not live just yet. Get CruxAI Pro now and each one unlocks for you the moment it is ready.

Exam PredictorPro · Soon

Your projected score, before the exam

After 3+ mocks, CruxAI projects your real-exam score band, safe-pass cut-off, and the exact mark gain you need to clear top colleges.

SSC CGL · projectionLikely qualifies
Projected score
142 – 154/ 200
Cut-off · 138You · 142–154Target · 160
+6 marks to reach top 10%
AI Doubt SolverPro · Soon

Step-by-step solution for any question

Tap any PYQ or mock question and get a worked solution — every step explained, every shortcut shown, every common trap flagged.

Question · Algebra
x⁴ − 5x² + 4 = 0
1Identify: this is a quadratic in disguise
2Substitute t = x² to linearize
3Solve for t, back-substitute, verify±2, ±1
Personalized PracticePro · Soon

A new test for whatever you're weak at

One tap generates a focused drill — weak topics, formula recall, chapter booster, or a speed/accuracy challenge built from your last attempts.

Weak topics3FormulasChapter boostSpeedAccuracyCustom
Today's drill: Geometry
Start →
Topper BenchmarkingPro · Soon

See exactly where toppers pull ahead

Topic-by-topic percentile, your gap from the top 10%, where the toppers spend their time, and what you should change next.

Score distribution · 12,418 aspirants
You · 62%
Top 10%
Toppers spend 2.1× longer on DI — and gain 18 marks there

Plus: Much higher daily mock & PYQ limit · Higher AI helper limits · Smart Test Analysis · Curated PYQ sets · Custom test with CruxAI guidance · Priority support chat.

Pricing

Free is genuinely free. Pro is genuinely powerful.

Get full exam access, daily AI help, and a daily in-depth report on the Free plan. Upgrade to Pro when you want a much higher daily limit, deeper analytics, and a personalized practice engine.

Free

Daily AI included

Real prep, real AI — zero card details.

₹0/ forever
  • Full access to every exam & test in the catalogue
  • 1 test per day
  • CruxAI chat · 25 questions per day (Hint, Concept, Shortcut)
  • 1 CruxAI Report per day with in-depth analysis
  • Custom test generation · by topic, section & exam
  • Multilingual support · English + regional languages across all exams
  • Multilingual CruxAI chat & reports
  • Score, percentile & basic analytics
  • Enhanced report features · coming soon, still free
Start free
Save 40%

CruxAI Pro

Built for serious aspirants chasing rank.

₹299₹499/ 12 months

Everything in Free, plus:

  • Much higher daily mock & PYQ limit
  • Comprehensive CruxAI · all 6 chips (Hint, Concept, Shortcut, Eliminate, Mnemonic, Formula) with high daily limits
  • 10 CruxAI Reports daily
  • Personalized Practice Engine · drills built from your topics & past report analysis
  • Advanced custom tests · CruxAI-guided by weakness, formula, speed & accuracy
  • Curated PYQ sets · hand-picked, weighted by exam pattern
  • Smart Test Analysis · percentile prediction & rank projection
  • Exam Predictor · projected score band & improvement target
  • Fast support · for any query or suggestion
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Frequently asked

Everything you wanted to know

Still curious? Reach out any time. We read every message and love hearing from aspirants.

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