It supports the old system, making it more convenient to browse Twitter information on older systems

Introducing Tweetx, an all-new generation Twitter client for iPhone, iPad and Mac. It also supports older iOS systems up to 12.1, allowing users on older systems to experience the new Twitter features as well.

There are 2 ways to unlock the APP Pro, choose either one based on your own situation:
PRO page location: Left Side —-> Settings—-> Pro

Method 1:
APP lifetime buyout mechanism, one-time purchase,