FlowCode is described as 'Matrix Flowcode is an advanced graphical programming language for microcontrollers. Popular uses PIC Programming, Arduino Programming. Supports ARM, AVR/Arduino, PIC Micro' and is an app in the Development category. There are three alternatives to FlowCode for Windows, Linux, Mac and Online / Web-based. The best alternative is Scratch, which is both free and Open Source. Other great apps like FlowCode are LabVIEW (Paid) and FlowStone (Paid).
LabVIEW is a platform and development environment for graphical programming for measurement and automation. It is a development tool available for applications in test and measurement, data acquisition (DAQ), analysis, and instrument control (GPIB, VXI, and serial).