Back in early summer 2014, I was full-on reaping the benefits of root on my first Android device. Of course, like any sane geek, I wanted to find was to speed it up. CyanogenMod was at that moment no an option due to some noob difficulties trying to install a custom recovery. I was stuck on the Samsung Touchwiz stock Jelly Bean ROM, which had a nasty issue where the more apps you install it becomes significantly slower (luckily later on CyanogenMod got rid of that cursed issue). I had already been using root boosters for various things by Gejos Enterprises, but the benefit was hardly noticeable. So I stupidly looked at the Play Store for a fix. I came across "Android Tweaker 2". I, naively believed the description, didn't look at reviews and downloaded it. I mess with a few low level settings that it instructed me how to change and how said changes would affect performance. I hit the reboot button in the app, and the tablet rebooted just fine. Next I played with a few settings that didn't require a reboot. I even found a nice setting that, if I increased it, it made Subway Surfers run noticeably smoother (and vice versa). After messing with some more crap and rebooting, my Galaxy Tab 2 7.0 (also my first Android device) refused to boot. At first I thought maybe a factory reset would fix it, but no it didn't. I then did all the necessary Googling and after a few stupid attempts like trying to desperately flash AOKP with the stock recovery knowing it wouldn't work. Then I got so sick my parents didn't even let me out of bed, so I was stuck with a soft bricked tablet for 2 weeks. Once I got better, I unbricked it by making an account on SamMobile and downloading the firmware, then flashing said firmware onto my tablet. I then proceeded to (with my dad's Google Account if that matters LOL) leave a review explaining what happened and how I fixed it. Also, I noticed that there were alot of people claiming they were stuck after two uses of the app with an unbootable phone. Thankfully, when I checked several months later, it disappeared from Google Play. So yeah, this is the WORST Android app ever.