flipper zero is just a small device with an SMT32 MCU, flipper one is a whole bloody linux computer, with an rp2350
I suppose the idea is it combines workflows you'd use a flipper zero + pc for into one device. Neat in idea, im not certain who it's truly for in practice. A flipper zero 2 with wifi built in and some minor improvements would have been much more welcome in my eyes.
The wifi board works fine with the zero, integrating it into the device is a pain in the ass, far from a 'minor' improvement.
I used it instead if needing to have a pocketful of access keys and garage/gate remotes. Also the remote control was great for random AC units or muting the sound on the airport lounge newsmax horror television.
but it broke too much and I found a better solution