Google Maps, though it mentions "speed camera ahead", it does not show speed cameras on the map nor tell you the distance where it's located. Also it doesn't even alert you to each camera on your route. Waze, ditched that years ago because it keeps sending me on the longer alternative route unnecessarily, especially when there is no congestion. Apple Maps... meh... recent experience was poor. Didn't bother to tell me to stay on left/right lane as I approached the first junction on a motorway, then decided to tell me "after 10 miles, stay in the right lane" (effectively ignoring that the fact that there are 3 or 4 junctions before that). TomTom Go has been pretty good whilst I had that 3-year free subscription, shows almost every active speed/traffic light camera as well as average speed (in average speed zones). However, the app lacked a lot of the features that the old TomTom UK-Ireland app had on the iPhone. I personally find it difficult to swallow the £15-20 yearly subscription for just speed camera updates. They probably only update once every other month at most.
Probably because if you use it everyday for work, you want the best navigation with updated speed cameras which TomTom has. The other apps are fine for occasional use
If you have built-in nav with TomTom there is not much choice (at least for some).
I'm surprised there's still a market for these things up against Google Maps and Waze
Fair point, I paid one-off £17.99 for the android app version. My tomtom one is standalone dedicated sat nav.