From a technology perspective it is a perfectly fine 17.3" Android tablet, the mount it comes with is the best part given it can be be collapsed allowing the rower to stand on end. The only negative for the tablet is the speakers don't get very loud, adding some external speakers such as the following works around that. From a workout perspective, the Ergatta platform being game based does motivate better than just the stats on the WaterRower monitor and also has open rows for some scenery.
https://www.amazon.com/gp/product/B09DJ1ZM5W/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
If you you have a WaterRower and like the Ergatta workouts then the upgrade package gets you there. Though you won't be able to easily do anything other than the Ergatta workouts with the upgrade package, there are ways to add NetFlix and some other apps but the tablet is too locked down to make it easy or be able to install any app.