The App Notifications are worse than PC, you dont even get 10 pages like PC players do. If youre posting trades your visitors are overwritten more often and you see less info over time playing in app version.
The app notifications are actually tricky. You can still get up to 60 notices, but a lot of times it will be less because the app does not list repeat visits from the same person, when a new visit and an old visit are both within the 60 notices on PC. So the app version will actually show more, if you have a very active neighborhood.