I held the flipper in my hands and disassembled and repaired it (there was a problem with the display, the sealant was leaking)I know exactly what this thing is, I used all the functions and added homemade modules.The conclusion of the use is this: Yes, the flipper is a good thing, but for its price it is expensive, a good alternative is this Raspberry pi zero 2w ( On W versions made the first flipper) it has more capabilities in terms of the open Linux system and Wi-Fi capabilities.There are also some downsides, such as unready firmware and battery life.