One full-length and four sectional mocks — together they cover every section type, every difficulty band, and the full GMAT Focus timing model. No payment. No trial expiry on the mocks you've started.
The GMAT Focus changed scoring, sections, and question mix. Most "mocks" are still pre-Focus content with a new label. SIGma-X is built from scratch on the new spec.
Difficulty steps up or down with every question, exactly like the real GMAT Focus — not section-level switches like most other mocks.
Scoring algorithm trained on 5,000+ real GFE score reports — including the exact percentile curves released by GMAC for the Focus Edition.
Every question is tagged by topic, sub-type, difficulty, and pacing. Get a ranked list of what's actually leaking your score — not generic "review verbal" advice.
Two-part analysis, multi-source reasoning, graphs & tables, data sufficiency — every DI sub-type is represented with Focus-grade difficulty.
Built by Payal Tandon — the #1 ranked GMAT instructor in the world. The scoring engine is accurate enough that students targeting 735+ can take any SIGma-X mock and reliably predict their real GFE score.
Bookmarking, the new review screen, per-section break — all simulated so test-day doesn't surprise you. Practice the format as well as the content.
Every mock generates three views — your overall score, a sub-section deep dive, and a question-by-question attempt log. Click between them.
Your predicted GFE score is 645 (62 %ile), which is 90 points lower than your target of 735 (99 %ile). The gap is concentrated in Verbal Reasoning and Data Insights.
Below is your percentile ranking based on the most recent 5 years for Data Sufficiency vs. Graphs & Tables vs. Two-part analysis vs. Multi-source reasoning sub-sections within Data Insights.
| Q# | Topic | Level | Result | Time | |
|---|---|---|---|---|---|
| 1 | NP | M | 01:34 | ||
| 2 | WP | M | 02:25 | ||
| 3 | NP | M | 00:50 | ||
| 4 | ALG | MH | 01:30 | ||
| 5 | NP | MH | 01:45 | ||
| 6 | WP | MH | 01:41 | ||
| 7 | ALG | M | 02:32 | ||
| 8 | ALG | M | 02:09 |
We trained our scoring engine on 5,000+ real GMAT Focus score reports. The result: when our predicted score says 735, your real-test-day score is overwhelmingly between 715 and 755.
Every percentile in the prediction model is benchmarked against GMAC-released Focus Edition score distributions, then validated against student score reports.
Most mocks tally raw scores. SIGma-X simulates question-by-question adaptive routing similar to the real GMAT — so a "hard correct" counts properly.
Every percentile in our model is re-calibrated each quarter against GMAC's published Focus Edition distributions — so a 99th-percentile prediction means 99th today, not on a 2023 curve.
Every question is tagged. Every miss has a reason. Walk away from each mock with a ranked, specific plan — not vague advice.
The Focus Edition routes you through increasingly hard questions as you get them right. Knowing where your accuracy collapses — at Medium-Hard? at Hard? — is the difference between a 605 and a 715.
Within each section, SIGma-X Map breaks down time vs. accuracy by question type and difficulty — so you see exactly where to fix pacing and where to fix concepts.
Your 5 free mocks are bundled with the rest of the e-GMAT free trial — sample lessons, 500+ practice questions, and the same diagnostic engine you'll use on the mocks.
Adaptive, scored within ±20 of your real GFE. Includes full question-level diagnosis.
Across Quant, Verbal, and Data Insights — taught by 99th-percentile instructors. Same format as the full course.
Across every section, every difficulty band — with full explanations and concept tagging. Plus 500+ mixed-quiz items inside the mocks dashboard.
Personal diagnosis across Quant, Verbal, and Data Insights — refreshed after every mock.
Payal is the #1 ranked GMAT instructor worldwide — co-founder of e-GMAT, the world's most-watched GMAT prep platform, and the company behind more 700+ scorers from India than any other prep brand. Over the last 18 years she has built the teaching practice used by 100,000+ students across 50+ countries.
SIGma-X is the same closed-loop pedagogy — concept-first teaching, rolling-mastery practice, root-cause review — retuned for the GMAT Focus Edition's new scoring, sections, and 64-question adaptive engine. Every mock question is reviewed against GMAC's official Focus Edition patterns, and the scoring engine is accurate enough that anyone aiming for 735+ can reliably predict their real test-day score from these mocks.
We don't believe in tricks. We've taught GMAT from first principles for nearly two decades — what each concept means, where students break, how to reason out the right move on test day. The Focus Edition rewards exactly that.
— Payal Tandon, Co-Founder, e-GMATWhat happens when the prediction is honest? Students fix the right things. Then their real score moves.
“SIGma-X mocks are a little harder than the OG, which makes them more accurate to the test center. My SIGma-X score was exactly what I got on test day. That's the score you want to see — so you actually know when to book your test.”
“I wasn't sure if my SIGma-X mock score was a real predictor of test day. After discussing my mocks with the team, they told me it would be — and that's exactly what happened. I felt a lot better walking in.”
“I was getting good practice scores but couldn't replicate them on my first attempt. SIGma-X gave me harder-than-official difficulty to train against, and the analysis between attempts is what let me replicate — and exceed — those mock scores on the real exam.”
Across the largest independent GMAT community in the world, students rated SIGma-X #1 for prep effectiveness — based on more than 2,900 verified reviews.
Most free mocks predict your score with a lookup table. Here's how SIGma-X stacks up on the things that actually matter.
Showing SIGma-X vs. industry average. Scroll on desktop for full comparison.
Yes — one full-length mock and four sectional mocks are completely free, no credit card required. The catch (such as it is): they're bundled with our free trial, so you'll also get access to 25+ sample lessons and 500+ practice questions. You can use them and never upgrade.
The scoring engine is trained on 5,000+ real GMAT Focus score reports. We benchmark our adaptive routing against GMAC's published percentile distributions, and we recalibrate as new official score data is released. The result: when SIGma-X predicts 735, our students' real test-day score typically lands within ±20 points of that.
"Accuracy" isn't a marketing claim — it's the R² between our predictions and verified score reports. It's currently 0.94.
Yes — question-by-question adaptive, not section-by-section. Every answer you give shifts the difficulty of the next question, just like the real exam. That's why the score prediction works so well: you're being tested the same way the GMAT tests you.
The dashboards work well on any device. For taking a mock, we strongly recommend desktop or a tablet with a keyboard — the real GMAT Focus is delivered on a computer, and you want your practice conditions to match test day.
You get 15 days from signup. The full-length mock takes 2h 15m end-to-end; each sectional is 45 minutes. Most students complete all 5 mocks plus the diagnosis review within the first week.
Especially then. The two official mocks give you a score but minimal diagnosis. SIGma-X tells you exactly which sub-section is costing you points (Two-part Analysis? Hard-band Quant?) and gives you a ranked, specific plan for closing the gap. That's the difference between knowing you scored 645 and knowing how to get to 715.
40+ authors, all scoring in the 99th percentile on the GMAT Focus Edition, designed SIGma-X for students aiming for 735+ scores.
SIGma-X is built by Payal Tandon — the #1 ranked GMAT instructor in the world on GMAT Club. Across the 120+ instructors reviewed and rated globally on GMAT Club, the top 4 are all e-GMAT experts, with Payal at #1. Every question is reviewed against GMAC's official Focus Edition patterns, and the scoring engine is accurate enough that anyone aiming for 735+ can reliably predict their real test-day score from these mocks.
1 full-length mock + 4 sectionals + 1,000+ free practice questions + 25 sample lessons — all free, no credit card.
Start free — 5 GMAT Focus mocks