I did a bunch of playing around with both last night, both the Mobile App and Tapatalk.
As far as browsing and reading they are both similar. Locating unread posts in both is just as easy.
The Mobile App is more like the full web site, just a bit more simplified. It is the best looking of the two.
Maybe because I am fairly used Tapatalk I found a few things easier. I like that I get phone notifications (and not email ones, that is shut off), which gives me instant access to the new posts in the thread. Posting and editing wise, I can do multi-quotes easy, and could not figure out how to do that on the Mobile App.
Basically, both work fine for the most part, and keep a fella connected on the go.
2017 Escape 5.0 TA (January 27)
2015 Ford F150 Lariat 3.5L EcoBoost
2009 Escape 19 (previous)
“Most folks are about as happy as they make up their minds to be.” — Abraham Lincoln