MikiLab
The bottega suitcase
Everything MikiLab knows about you (favourites, starter, medals, oven, notes, tools) lives on your phone. Change phone and you lose it. Here you pack it in a suitcase and unpack it on the other side. No server in between: you keep the file.
Pack
There are 9 things to save on this phone. The file is called mikilab-valigia-<date>.json: send it to yourself (email, Drive, WhatsApp) or save it.
Unpack
On the new phone: open mikilab.de, come here, choose the file. Suitcase items replace matching ones; the rest stays.
The file holds only your settings and notes, with the nickname if you set one. No passwords, no server data. Keep it where you keep your things.