$2.99, iPad, iPhone

3-7

Teaches: math, counting, math facts

$7.99, iPad, iPhone, Android

4-9

Teaches: comparing quantities, addition, subtraction, measuring, interpreting data, counting, Mathematics

$2.99, iPad, iPhone, iPod Touch

2-up

Teaches: music, rhythm, melody, math, counting, computer sequencing

$1.99, iPad, iPhone, iPod Touch (iOS 8.0 or later)

5-8

Teaches: math, creativity, problem solving, logic, gears, physics, physical science, torque

$3.99, iPad, Android, Kindle

6-up

Teaches: logic, math, spatial relations, art, mechanics, optical illusions, simplified Chinese, Traditional Chinese

$2.99, Android, iPad, iPhone, Kindle

6-15

Teaches: problem solving, math, fractions, logic

Windows, Mac OSX

7-up

Teaches: programming, debugging, logic, math, science, STEM

$2.99, iPad, iPhone

5-up

Teaches: math, counting, logic, addition, clocks, angles

$2.99, *iPad, iPod touch, iPhone

3-up

Teaches: fine motor coordination, racing, classifying, counting, letter recognition, science, math, logic

$9.99, iPad, Android

6-up

Teaches: Geography, nature, maps, using a GPS, math, history