You are considering whether to buy a product. You look at the reviews. Would the following review decrease or increase the chances of you buying the product? Review title: My Navman GPS suddenly stop working Product review: Problem: I used to have this product for 4 years. Time to time, it requires to activate Software. Suddenly, software is no longer able to be activated. Navman Tech support said my software (SMART ST 1.90) is outdated and their servers do not recognize it. They said that I should purchase latest software in order to continue using this product. I do not understand why my GPS suddenly stops working until I buy new software. I am not downloading/adding any new feature from server.Conclusion: My Navman GPS is suddenly not working without any notice, and Nanvam company asks me to purchase upgrade software. And, even though I purchase upgrade software, I might use it only for a while.
decrease

You are considering whether to buy a product. You look at the reviews. Would the following review decrease or increase the chances of you buying the product? Review title: A must have if you want a baby Product review: I bought this to help me conceive more quickly. The first month I used it I got pregnant. After having that baby I used it a couple of times more to try to get pregnant and both times I fell pregnant the first month using it but miscarried. This is a lot cheaper than going to the fertility doctor and works great. There is no need to be guessing or waiting for smiley faces this monitor is great and easy to use. I spent over 6k at a fertility specialist trying to get pregnant and didn't and I spend $150 on this monitor and got pregnant on the first try.
increase

You are considering whether to buy a product. You look at the reviews. Would the following review decrease or increase the chances of you buying the product? Review title: Riveting Book Product review: As usual, Gena Showalter outdid herself. Her book is no less than riveting. One page and you are hook. It is thanks to her stories that I love these kinds of adventures. She makes you part of her world and you are lost until the end. Great job and can't wait for the other books .

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
increase