Calculation Booster: CrackIn30
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About this app
CrackIn30 — the Math Calculation Speed Booster for SSC, Bank, Railway and all one day exams.
CrackIn30 is the calculation booster app built to turn your math calculation speed into your biggest exam advantage. 1700 expert math calculation practice questions across 14 specialised calculation tests, plus a 291-question Mixed Practice Test. Every question is regenerated fresh on every attempt — pure speed math, mental math and quantitative aptitude drill.
━━ WHY CRACKIN30 ━━
If your exam is decided by who calculates faster — SSC CGL, SSC CHSL, IBPS PO, SBI PO, RRB NTPC, RRB Group D, CAT, UPSC NDA, AFCAT, Agniveer — this is the calculation speed booster you need. Top rankers don't just know the formulas, they crack calculations in seconds. CrackIn30 gives you the daily calculation practice that builds that edge.
━━ WHAT THIS CALCULATION APP DOES ━━
✓ 14 specialised math calculation practice tests — 1700 questions in total
✓ 291-question Mixed Practice Test — the ultimate math calculation game
✓ Daily Challenge — 25 questions, 12-minute timed sprint, 3 difficulty modes
✓ Per-question timer — find the exact step where calculation speed drops
✓ Topic-wise scoreboard — see SSC, Bank, Railway and CAT readiness improve
✓ Full test history — review every past attempt, question by question
✓ Daily Practice Streak — build the calculation habit toppers swear by
✓ Spin Wheel rewards, Daily Login coins, Premium Pass — stay engaged
✓ Global Leaderboard — Daily Challenge + practice all-time ranks
━━ 14 CALCULATION TEST CATEGORIES ━━
• Squares, Cubes, Square Roots, Cube Roots
• Multi-Digit Addition, Subtraction, Multiplication
• Fraction Operations and Mixed Fractions
• Division Techniques, Special Divisors, Decimal Division
• Percentage Calculations and Net Changes
• Recurring Decimals and Surds
• LCM, HCF, Simple Interest, Compound Interest
• Profit and Loss, Time and Work, Ratio and Proportion
• Divisibility Rules (7, 9, 11, 13, 17, 19 and more)
• Data Interpretation — Pie Charts, Tables, Bar Graphs
• Pythagorean Triplets and Algebraic Equations
• Approximation, Simplification and BODMAS shortcuts
• Vedic Maths shortcut tricks
• Number System, Averages, Mixtures
━━ THE 291-QUESTION MIXED PRACTICE TEST ━━
Drawn from all 14 calculation tests, mixed into a single 291-minute exam simulation. The closest practice possible to the calculation barrage in SSC CGL Tier-1, IBPS PO Prelims, RRB NTPC and similar competitive exams.
━━ KEY FEATURES OF THIS CALCULATION SPEED BOOSTER ━━
✓ Performance analysis — accuracy %, time per question, weak-topic flags
✓ Difficulty levels — Basic, Moderate, Hard, Auto-adaptive
✓ Fresh questions every time — anti-rote, exam-grade calculation games
✓ Calculation booster offline — practice tests run without internet
✓ Clean, fast UI — no clutter, no distractions, pure speed math
━━ WHO IS THIS MATH CALCULATION APP FOR? ━━
Aspirants preparing for SSC CGL, SSC CHSL, SSC CPO, SSC GD, SSC MTS, SSC JE, IBPS PO, IBPS Clerk, IBPS RRB, SBI PO, SBI Clerk, RBI Grade B, RBI Assistant, NABARD, LIC AAO, RRB NTPC, RRB Group D, RRB JE, RRB ALP, CAT, XAT, MAT, CMAT, UPSC CDS, UPSC NDA, UPSC CAPF, AFCAT, Indian Navy, Indian Army, Agniveer, CTET, State PSC, GATE aptitude, GMAT and GRE quant.
If your exam tests calculation speed, mental math, math calculation, simplification, approximation, BODMAS, data interpretation or any quant topic — CrackIn30 is the math calculation practice app you need.
Download CrackIn30 — the calculation pro every aspirant needs. Practice daily. Crack your exam in 30 days.
FREE to start — no credit card required.
START YOUR 30-DAY CALCULATION STREAK TODAY.
━━ DISCLAIMER ━━
CrackIn30 is an independent, private educational app. It does not represent or claim affiliation with any government entity or official exam board.
Official sources for exam information:
• SSC: https://ssc.gov.in
• UPSC: https://upsc.gov.in
• Railways: https://indianrailways.gov.in
CrackIn30 is the calculation booster app built to turn your math calculation speed into your biggest exam advantage. 1700 expert math calculation practice questions across 14 specialised calculation tests, plus a 291-question Mixed Practice Test. Every question is regenerated fresh on every attempt — pure speed math, mental math and quantitative aptitude drill.
━━ WHY CRACKIN30 ━━
If your exam is decided by who calculates faster — SSC CGL, SSC CHSL, IBPS PO, SBI PO, RRB NTPC, RRB Group D, CAT, UPSC NDA, AFCAT, Agniveer — this is the calculation speed booster you need. Top rankers don't just know the formulas, they crack calculations in seconds. CrackIn30 gives you the daily calculation practice that builds that edge.
━━ WHAT THIS CALCULATION APP DOES ━━
✓ 14 specialised math calculation practice tests — 1700 questions in total
✓ 291-question Mixed Practice Test — the ultimate math calculation game
✓ Daily Challenge — 25 questions, 12-minute timed sprint, 3 difficulty modes
✓ Per-question timer — find the exact step where calculation speed drops
✓ Topic-wise scoreboard — see SSC, Bank, Railway and CAT readiness improve
✓ Full test history — review every past attempt, question by question
✓ Daily Practice Streak — build the calculation habit toppers swear by
✓ Spin Wheel rewards, Daily Login coins, Premium Pass — stay engaged
✓ Global Leaderboard — Daily Challenge + practice all-time ranks
━━ 14 CALCULATION TEST CATEGORIES ━━
• Squares, Cubes, Square Roots, Cube Roots
• Multi-Digit Addition, Subtraction, Multiplication
• Fraction Operations and Mixed Fractions
• Division Techniques, Special Divisors, Decimal Division
• Percentage Calculations and Net Changes
• Recurring Decimals and Surds
• LCM, HCF, Simple Interest, Compound Interest
• Profit and Loss, Time and Work, Ratio and Proportion
• Divisibility Rules (7, 9, 11, 13, 17, 19 and more)
• Data Interpretation — Pie Charts, Tables, Bar Graphs
• Pythagorean Triplets and Algebraic Equations
• Approximation, Simplification and BODMAS shortcuts
• Vedic Maths shortcut tricks
• Number System, Averages, Mixtures
━━ THE 291-QUESTION MIXED PRACTICE TEST ━━
Drawn from all 14 calculation tests, mixed into a single 291-minute exam simulation. The closest practice possible to the calculation barrage in SSC CGL Tier-1, IBPS PO Prelims, RRB NTPC and similar competitive exams.
━━ KEY FEATURES OF THIS CALCULATION SPEED BOOSTER ━━
✓ Performance analysis — accuracy %, time per question, weak-topic flags
✓ Difficulty levels — Basic, Moderate, Hard, Auto-adaptive
✓ Fresh questions every time — anti-rote, exam-grade calculation games
✓ Calculation booster offline — practice tests run without internet
✓ Clean, fast UI — no clutter, no distractions, pure speed math
━━ WHO IS THIS MATH CALCULATION APP FOR? ━━
Aspirants preparing for SSC CGL, SSC CHSL, SSC CPO, SSC GD, SSC MTS, SSC JE, IBPS PO, IBPS Clerk, IBPS RRB, SBI PO, SBI Clerk, RBI Grade B, RBI Assistant, NABARD, LIC AAO, RRB NTPC, RRB Group D, RRB JE, RRB ALP, CAT, XAT, MAT, CMAT, UPSC CDS, UPSC NDA, UPSC CAPF, AFCAT, Indian Navy, Indian Army, Agniveer, CTET, State PSC, GATE aptitude, GMAT and GRE quant.
If your exam tests calculation speed, mental math, math calculation, simplification, approximation, BODMAS, data interpretation or any quant topic — CrackIn30 is the math calculation practice app you need.
Download CrackIn30 — the calculation pro every aspirant needs. Practice daily. Crack your exam in 30 days.
FREE to start — no credit card required.
START YOUR 30-DAY CALCULATION STREAK TODAY.
━━ DISCLAIMER ━━
CrackIn30 is an independent, private educational app. It does not represent or claim affiliation with any government entity or official exam board.
Official sources for exam information:
• SSC: https://ssc.gov.in
• UPSC: https://upsc.gov.in
• Railways: https://indianrailways.gov.in
Updated on
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What’s new
What's New:
- Expanded compatibility across more devices for smoother performance
- Implemented 16 KB page alignment
- Fixed question rendering issues
Clean, stable, and more reliable than ever.
- Expanded compatibility across more devices for smoother performance
- Implemented 16 KB page alignment
- Fixed question rendering issues
Clean, stable, and more reliable than ever.
App support
About the developer
Hemant Kumar Singh
aravsinghrajput51@gmail.com
gayatri Mandir Road,Sudna, P.O-Sudna, P.S-Daltonganj, Sundna, PO: I. E. Sudna, DIST: Palamu, Jharkhand - 822102
Daltonganj, Jharkhand 822102
India