We have been using this test tool in our office since 2012, I can confidently say that even though they started as an independent developer (in Poland) later acquired by google with big capitalization -it has remained one of their best products! They constantly improve all features so users are always getting new tools which help them do effective tests faster than doing everything manually or just guessing what would work better from trial-and error approach alone :)I like only few small things but nothing really important because we use almost any feature available out there ;)And i love also how good support team at splitForce gives us after sales service without hesitation when needed ;).We actually used AB testing functionality quite regularly while writing code until now; It helps you find your ideal customer very quickly thanks its ability create multiple variations automatically within couple minutes instead trying different approaches each time before realizing if something works well enoughtOr not :)) The best thing about this software is that you can compare two versions of the app with ease. It also helps you understand your users behavior and what they like or dislike about the app. I have not found anything to dislike so far. They do a good job at keeping their customers happy. This tool has helped us improve our mobile apps by having more data on how people use them. We are able to make changes in an app without having to wait for weeks.