Was giving a friend a lift home the other day. She's one of those people who seems to have her phone permanently stuck to her hand. Several times during the journey she informed me of her DH's whereabouts ("he's in X so should be home in 20 mins" etc). She then announced he'd stopped off at his mum's, less than 5 mins from where we were, so asked if I'd drop her there instead. We approached his mum's road just in time to see him pulling out of it so had to follow him flashing my lights so he'd stop and let my friend jump in. I initially thought it strange that he'd leave knowing his wife was just around the corner & about to be dropped off when the penny dropped that she'd been tracking him the whole time using an app and hadn't communicated with him at all!
I get that these apps could be handy for keeping tabs on your kids or if someone was suspected of being up to no good (which I seriously doubt in this case). Otherwise, AiBU to think this is weird, controlling behaviour?