The app overall serves a general purpose and we can all get better using this app. But I have experienced some difficulties in my 48 hours of using 21 Trainer.I have had a problem looking at the high scores for myself and global.Once that is solved I would like to see the app include some features.For starters, I would like to be able to chance the time clock in increments of 15 seconds. This would help more experienced counters test themselves. Also it doesn’t show you the running count at the end if you were to have the wrong count. I also think they should add in what the true count in the shoe is. If these changes would be implemented in the application, it would be perfect.

I wrote a counting practice program for the pc but purchased this because I’m not an iOS coder. I have 2 problems. First, sometimes it shows the same card twice. I thought i hadn’t advanced to the next card so tapped again to advance the card. Consequently my count was off. It shouldn’t show the same card twice. Second, I think it counts the last card before showing it. Since the time is up. It asks for the count and never does show the last card. This should be fixed. Otherwise it’s a great practice app.

Not being able to see the last card on top after the thirty seconds is a HUGE problem. Often I will click for a new card as soon as the time is up and it takes the new card into account, even though I didn't see it, or if I did it was for a fraction of a second, ruining the test. Also not giving a sound que or visual que for a new card that is the same as the one before it often gets me mixed up because I think my tap didn't register leading me to skip a count.

So I like the simplicity of this. Try your best to count as many cards in 30 seconds. But like a lot of others mentioned on here, it needs to show how far you were off on the count, not just wrong. Cause I could swear I’m right sometimes and it just tells me I’m wrong. Makes me wonder if there is a bug in its count or maybe I’m messing up somewhere. Also it’s be nice if there was more ways to count them a single flip deck. Like if there was an actual poker table with hands and a dealer. May help to shift your eyes around.