I tried once TouchGFX over 2 years ago, you can put some nice icons and buttons but it was pretty much all. I have seen some guy presenting on you tube how to display data from sensor but it was too complicated and limited. I did bunch of amazing projects using code provided with BSP, HAL, assembler. The idea is good but the package needs more work to be useful, you need to receive and display data, control other devices. I cannot see how to save some data to flash and to use extra RAM or just simple I2C or SPI communication with sensors with touch GFX. It is simply very limited to do anything.
tommax
Touchgfx is worst graphics tool. It takes moths or maybe years to learn.
Why touchgfx is not simple as nextion.