Terminal by Bra@y++ is described as 'Terminal is a simple serial port (COM) terminal emulation program. It can be used for communication with different devices such as modems, routers, embedded uC systems, GSM phones,... It is very useful debugging tool for serial communication applications' and is an app in the OS & Utilities category. There are four alternatives to Terminal by Bra@y++ for Mac, Windows, iPad, iPhone and Linux. The best alternative is Zterm, which is free. Other great apps like Terminal by Bra@y++ are CoolTerm (Free), Get Console (Paid) and goSerial (Free).
CoolTerm is a simple serial port terminal application (no terminal emulation) that is geared towards hobbyists and professionals with a need to exchange data with hardware connected to serial ports such as servo controllers, robotic kits, GPS receivers, microcontrollers, etc.
Get Console is the first ipad and iphone serial port terminal application providing serial terminal connectivity without jailbreaking. The app store description advises it works on network devices, but offers a standard VT100 emulation.