Yes. Multiple SwitchBot Meters can be used on the same SwitchBot App, with the same account logged in.
In fact, a lot of customers use more than one Meter in a wide variety of ways.
There's no limit to the number of Meters you can pair with a single mobile device. Users can connect multiple Meters simultaneously on the same cellphone. Also, a single Meter can be paired to multiple cellphone at the same time.