No sirve necesitan arreglarlo se frisa .

Great for figuring just about anything concrete related. Did everything long hand for a longtime. This saves me time and money and is much more accurate. Great to have on the phone so I don't have to carry my real calculator around. Thanks, I would recommend this.

I was so happy to find this app for my iPhone. I have been using this concrete calculator (the actual calculator) for over 15 years. I have never had any problems with any kind of calculation problems. Best concrete calculator I've ever known of/best app for my business!!

If you are a professional be careful, it will not give you the proper amount of concrete bags. I don't think that this thing realizes that there is .0222 yards in 1 80 lb. bag. Example: 5x5 at 4" deep is 13.9 bags, this calculator insists that it is 12.5 bags. I am glad I am not using this in the field. I would be really screwed and you don't want to be short. All of the Construction Master series has the same problem. I have them all and they are all wrong.

Great app! Best part, one less object to carry

Love it!! Works great