$3.99, iPad

10-up

Teaches: art, science, history, anatomy, Leonardo Da Vinci

$3.99, iPad, Android

5-up

Teaches: listening, language, speech, audio mixing

$1.99, iPad, iPhone

3-12

Teaches: opposites, classification, logic

$3.5, iPad, iPhone, Android

8-up

Teaches: reading, the elderly

iPad

3-up

Teaches: German, creativity

$750, iPad

5-up

Teaches: logic, spatial relations

$83, Smart Toy, iPad, iPhone, Android

8-up

Teaches: circuits, electricity, science, STEM, coding

$7.99, iPad, iPhone, Mac OSX

5-up

Teaches: A utility for writing, sketching and taking notes

$8, iPad, Android, iPhone

2-5

Teaches: spatial relations, problem solving

$8, iPad, Android, iPhone

2-5

Teaches: logic, creativity, spatial relations, christmas, Santa Claus