What is subsidizing? Subsidizing is instantly being able to identify how much is in a set. Usually people can "see numbers" to 5 quickly in a line and up to 6 if arranged like dice.
The ability to see numbers quickly is a huge stepping stone to a child being fluent with numbers and math facts.
These two apps are amazing. They were created by the same company but the graphics are different.
Arithmaroo 1: A Counting Math Game for Kids by Icanology LLC
MathGirl Number Garden by Icanology LLC
Tens Frame Snap by BHAD Games
MathTappers: Find Sums – a math game to help children learn basic facts for addition and subtraction by HeavyLifters Network Ltd.