I started brain training with NeuroNation.
There's three tiers of mounting brain training challenge
I've gone through all the brain training tasks and they are pretty challenging and focus intensive. My favorite games have to be the mathematics tasks. The base effectiveness tasks I found overly simplistic so going forward I think devote my time to the high and maximum effectiveness tasks.
At this point it seems quiet similar to Lumosity, the games themselves last less than 2 minutes and then you switch to a different game.
At this point I still find Dual N-Back a more effective mindfulness tool