GMAT 610 to 700 in 1.5 months with TTP

I started revising for the GMAT using all the free programs I could get my hands on, manhattan, magoosh, kaplan, veritas, and GMAT club itself, naively thinking I could master this with zero investment. Regardless of the vast amount of free material and questions, I was really struggling to piece it all together and really get my arms around the full "curriculum". After about one month I took the GMAT at a test centre and got 610 (Q39, V35, IR7), which I wasn't happy with.
Three days before doing the test, I had discovered TTP and thought it looked great, so I signed up for the flexible plan. It turned out to be exactly what I needed, but somehow I discovered it too late! So after the first exam I decided to continue studying and followed the quant and verbal material in TTP. I completed all the quant and roughly half the verbal material in about one month, and moved on to doing practice questions and embedding the knowledge. 1.5 months later I did the GMAT online, and achieved 700 (Q46, V40, IR3). I could not have improved so much in so short a time without the structure provided by TTP. (I screwed up the IR section on the 2nd test by getting stuck in an MSR question, and also set up my desk poorly such that by the time I was in the IR section the sun was shining directly in my face...something for online test takers to bear in mind!!).
All in all, it's a powerful resource that was well worth it for the couple of months that I needed it.
The only downside I can think of is that they don't cover reading comprehension or IR yet, but I know RC is on its way to TTP soon at least.
Highly recommend.