Ads suck Hard to learn when ads continue to pop up. I rather pay for an ad free app instead of this. The app has potential
Hate the pop up ads Too many ads popping up, fix that and I would give 5 stars
Get rid of pop up ads Every three numbers or letters you get a pop up ad, too much interruption for leaning
Ads Add make it worthless make a paid version
Too many ads Do a ad free, paid version.
Numbers I LIKE this app