How is PocketCode different from Termux?

Short answer

Termux is a terminal emulator — a Linux shell where you install and run command-line tools yourself. PocketCode is a full IDE: a graphical code editor with LSP, a visual database manager, an API tester, Git and AI, plus its own terminal and ready-to-run language interpreters. Use Termux for the command line; use PocketCode to write and build with a UI.