To summarize my review: TTP is awesome!
I just had a couple of weeks to study using TTP because I had a due date on my second GMAT exam, but studying with TTP was an amazing experience, based on a few things:
1. It actually teaches you math.
I've seen other courses that teach you only a few tricks to get some questions right, but that is not sufficient to get a very high score. TTP has a methodology that ease the learning process to you, so those tricks are only ways to fasten the solving process of a problem that you'll definitely know how to solve if the trick is not enough.

2. It helps you to track your gaps.
After each exam you take, it clearly states what are your main problems, according to question type, theme, and difficulty level. It even conveniently lead you to themes that you should review before advancing on the study plan. After each test, you review your answers and the official solution, and you can mark why you got it wrong. It helps a lot to become more aware of the changes you need in you.

3. It has an "infinite" questions set.
Seriously, I wasn't even near finishing all the practice questions TTP could give me. In addition to questions grouped into themes, it even has a tool to generate customized tests with a lots of parameters for you to choose, such as difficulty, your average response time on related themes, only new/known questions, only questions that you got wrong before, etc.


4. It has an use experience that meets nowadays expectations
Seriously, why there are still courses that makes you use excel spreadsheets or things like that to track your progress? TTP gets that done easily! There's a pretty amazing dashboard that easily gives you the information you need to take the next steps.

5. The customer service is great!
I sent a few messages on the customer support chat and they answered me really fast, even on Sundays! Theses messages were all about my attempts to optimize my use of the tool because I was so short on time. I did not have any problem to use it.

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In fairness, I did not utilize the Target Test Prep software to it's full potential. I had already gained GMAT testing strategies from a different prep company and simply used this service to help identify some weaknesses. The user interface is very modern and by far the best of any company out there.
During our initial phone conversation, Scott at Target Test Prep seemed very caring and talked me through the mental hurdles of breaking score barriers.
I probably should've used this service as directed, but at the time, my needs were different than those of a beginner. Overall, it may be worth your while.

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Target Test Prep made a major difference to my GMAT Score overall, especially since I was aiming to obtain a high quant score. Before the course, I was mainly scoring around Q40, but I knew that if I were to improve I would have to prioritize this section since I was not scoring at a high percentile. I took other courses and managed to score a 620 on my first GMAT attempt (Q43, V 31). While my Verbal was not as high either, I knew that it was important for me to achieve a high quant score since I am looking to switch to a career that values quant highly. My goal was to reach at least Q47.

I initially began taking other courses that did cover the fundamentals, but non were as comprehensive as TTP. Several other courses I checked out focused mostly on techniques (i.e. smart numbers, testing answers), but I knew that understanding the algebraic approach initially would ultimately help facilitate my understanding of the problems to then apply these kinds of techniques. I believe TTP has the best dashboard and comprehensive modules overall, allowing you to customize your own plan depending on how much time you have before your test. Having failed to obtain my target score previously, I decided to take more time to study for about 3 months (the first two dedicated to TTP) until I felt prepared to score highly on my second try. I did study approximately 3 hours a day to go over TTP and I went through each Module twice, initially focusing on understanding the concepts and later focusing on time management for each test on every Module.

Since I started scoring between 47-49 on my practice CATs, I felt more confident but I did schedule a call with Jeff who gave me a couple of tips to make sure that I was ready for my test and immediately booked my exam for 2 weeks after that call. I found that a lot of times there were concepts I found difficult to grasp entirely, but the Must Know page was of great help to focus on what the most important concepts are for the test and relaxed my mind from stressing to have to know every single concept. Overall, I recommend going through each module at least once since I understand that not everyone has time and based on your performance in the diagnostics, focus on your weak areas that are thankfully displayed on the TTP dashboard. It took a while, but I was finally able to score above a 700 and I owe my thanks to TTP.

Final Score 710; Q49; V38

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I was looking for an online course which could help me to refresh basic concepts, practice questions online, and analyse the mistakes. On top of it, the course had to be flexible per my schedule as I could spare time only on weekends or after office hours. I started looking for such offerings and stumbled upon TTP by luck. I read the reviews and found myself inclined to try it out. They had a $1 trial for 5 days and I immediately signed up for it. First I went through the courses I was lacking in and realised that I had improved my understanding of the concepts and the questions asked. Number theory, arithmetic in general, set theory in particular were my key takeaways from the course. It is very well structured with theory followed by three different levels of questions and multiple sets of practice sets. In my opinion, their course is good enough to get you past a Q48/49 easily. You could score a Q50/51 provided your accuracy is higher. To sum up, TTP helped me immensely to score well in quant.

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I took a live GMAT prep course over 9 weeks and took the exam a few days after the class ended, scoring a 690 (42 on both quant and verbal). A friend recommended Target Test Prep which I used solely for quant drills over about 6 weeks (signed up earlier than I actually started). I retook the exam and scored a 740 (47 on quant, 45 on verbal). The quiz lengths are perfect for quick study sessions and I was really amazed at how my score improved. The problem solutions were thorough and the site made it easy to track my progress. If you are looking to improve your quant score, I highly recommend Target Test Prep.

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Target Test Prep helped me a lot. It is very in-depth on quant topics and includes multiple hours of practice quizzes for each section. By going in-depth, you get to learn even edge-case questions well and complete them quickly on the GMAT exam.

The software is easy to use and contains useful analytics on your progress. You can also easily re-review problems you mark or get wrong.

Note that I studied over a long period (3+ months of prep time). I think TTP makes offerings for quicker study. But you should read other reviews to learn about that. I hit the books HARD and found TTP valuable for going in-depth, taking the slow route to assured victory. I took some tours of other courses. My impression is that TTP includes more deep explanations of rare questions/topics than other courses. I think this lends itself to in-depth study.

I generally went outside of TTP for test-taking strategy tips. I got that advice from friends and forums. I used TTP to understand and drill the material itself.

Overall, I believe this course was very useful towards my success on quant.

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I had about 7 weeks to study for the GMAT (a lot less time than I wanted, but I had upcoming deadlines and other responsibilities), and I definitely don’t consider myself a quant person. I took a practice GMAT and scored a 560, which was depressing, but it gave me a baseline to work from.

I initially tried the MGMAT books but felt that they lacked an interactive, multi-sensory component, so I dropped that in favor of Magoosh. Though I think Magoosh is an interesting program, it basically just throws example after example at you in the form of videos, and I don’t think the concepts get reinforced.

Frustrated, I decided to look at reviews on BeatTheGMAT and GMATClub, and that’s where I first heard of TTP (the reviews were quite compelling). Since they offered a free trial, I decided to give it a chance. At first, I was overwhelmed with just how massive the study plan is, but I quickly realized that the program is setup extremely methodically, from the very basics of addition all the way through to every testable concept on the quant section. The provided quick study notes and the 15 page formula guide were fantastic additions that helped reinforce the concepts of each chapter.

About halfway through my studying, I realized that there were still gaps in some of my foundational knowledge, so I hired Jeff, one of the heads of TTP, to do a couple of extended tutoring sessions. He was able to reinforce some of the concepts I was struggling with and exposed others that I thought I knew well — in reality, I had comprehension gaps in several areas, and Jeff pushed me hard to dig deeper and really understand the concepts in and out.

I decided to push my test back by a week and dug even deeper to give my all to studying. I took the test on the last possible day before an international work trip, and I was stunned to receive a 670… in less than 2 months, I’d improved my score more than 100 points!

Ultimately, I got in to Darden’s GEMBA program with a scholarship, and I owe a tremendous debt of gratitude to TTP and Jeff for taking me from completely quant-naive to confident in such a short period of time. I wholeheartedly recommend both TTP and Jeff.

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I'm a good test taker, but tried to study on my own the first time around and scored a 690, much below my goal of 730. I then sought a tutor and was put in touch with Target Test Prep/Jeff Miller.

After 4 months of working through the TTP Quant Flex program, I was scoring in the mid 700s on practice tests. I really contribute my improvement to 1) how comprehensive the quant course was -- it really forces you to learn each chapter and ingrains the information into your memory and 2) my tutoring sessions with Jeff, in which he introduced me to challenging questions that often came up on my practice tests/the real test, and helped explain solutions in ways that weren't conveyed through textbooks/courses.

Although due to the adaptive nature of the test, it didn't necessarily feel easier to me while taking it, my significantly higher scores after getting through the quant program were proof of how much I had learned and my improved ability to recognize and confidently solve a wide variety of problems. I would definitely recommend taking the Flex course supplemented with tutoring sessions from Jeff to focus on your weaknesses.

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Jeff was a great help in regards to increasing my quant score on the GMAT. I had an ambitious goal of raising my score 30 points in one month. I had been using a self-paced study plan with another firm and was struggling to get my score higher. Just a few hours with Jeff taught me things that greatly helped my score. I was able to improve my quant score by 5 points (42 to a 47)! If I could have started my studying over, I would have just hired Jeff and used his program from the beginning. Jeff was incredibly responsive throughout the entire process. I also found the Target Test Prep course to be incredibly helpful.

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I cannot recommend Target Test Prep enough.

I come from a non-traditional background (Musical Theater), and, when applying to MBA programs, knew I would need to perform at a competitive level in my quant and IR scores in order to make a mark in my applications.

I'm stubborn and cheap and didn't want to sign up for an in person class or one-on-one training (also very uncomfortable failing in front of people, and I knew there would be a lot of failure as I relearned all the math I'd forgotten since high school). I initially used a different program-a long set of books that gave me a good refresher on conceptual knowledge with basic questions about each chapter just enough to cover the basic principles. Even though I spent two months with these books and countless hours studying, my first sitting at a real test was a disappointment. I scored a 39 (37th percentile) for quant and a 6 (70th percentile) for IR. I knew these scores would not prove to an admissions team that I was ready for their business oriented programs. And what was worse, I knew that I was capable of a better performance. I just didn't have the right tools.

I looked around online forums for programs specifically geared towards raising your quant score and Target Test Prep seemed to be the best course content for the best price. I loved the idea of the monthly subscription, as I was registered to take the test again two and a half weeks later, and didn't want to spend a ton of money on something I would (hopefully) only use for a couple of weeks. And with the awesome week free trial, I really would only be using the subscription for a week and a half. The week free trial let me test drive the software and see that it was the kind of guided progression that I was missing out on from my resistance to not take an in person class. It provided a structure that made sense and felt interactive and engaging. The dashboard, study plans, and chapter tests, are invaluable tools. The hundreds of practice questions littered throughout the study guides really drill typical test formats into your study process. Where I had learned conceptual knowledge from the previous program, Target Test Prep teaches operational knowledge that is of real use when approaching the GMAT.

Admittedly, I did not follow the study guide to the letter, as I only had two and a half weeks to use the software. I did make sure to work through all of the study guides and take most of the "easy" level chapter tests. Then I moved on to the mixed review tests. I love that there is always a timer for the tests that counts down two minutes and that the scoring of each test tells you whether a question was easy, medium, or hard. I knew I was ready when the only questions I was getting wrong were "hard" level questions. I also felt confident looking at the dashboard, seeing that I had answered 500+ questions with 80% accuracy.

On the day of my second test, I experienced some major differences in my performance due to using Target Test Prep: I was more comfortable with all question types, I had working knowledge of all quant principles and knew what kinds of problems each question was asking immediately and what formulas to use, I was much speedier and my internal clock told me when two minutes was about up and it was time to move on, and, maybe most importantly, I could immediately identify questions that were simply too tough for me or on insanely difficult subject matter not even explicitly covered by Target, allowing me to quickly guess and move on, buying me time for other questions and saving me the stress of wondering if I could have ever answered it correctly.

With just two and a half weeks of studying with the Target Test Prep software, I raised my quant score from 39 to 46 (60th percentile) and my IR from 6 to 8 (93rd percentile). My verbal section also improved drastically due to having less stress over the quant section (I didn't study any verbal between test 1 and test 2).

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