Too many ads
There are just too many ads. It becomes very annoying. You can’t even do the math properly because every time you click next there’s an ad every time you go back there is an ad.
Bad Soft!!!
I paid for an in-app purchase in this app to cancel the advertising banner, however, the app in Chinese tells me that the app has not been purchased and the banners continue to appear, and there is not a single contact in the system for communication and the feedback button simply does not work =((((
Show more
Abacus Math
It’s very nice!!!!!
