[autoexec]

You have to take into account that a digital scale, especially one with an app, is going to be collecting endless amounts of data about you and selling it to anyone willing to pay. Your digital scale will end up costing you again and again for the rest of your life, every time someone uses that data against you. You'll just never be told when it's happening.

[ilyt]

...get one without WiFi ? My takes one CR2032 battery every ~7 years

[autoexec]

You're right that they're probably harmless if they're not connected to the internet and can't interact with a cell phone.