Not worth the $
Looks appealing but lacks many features other apps possess. No ability to customize, does not re-set or give instructions once a task completed, no praise or reward for task completion ( if thats important to you), lacks verbal instruction, tiny "back" button makes it difficult for toddler to use without help. Way way way overpriced for whats offered. Try grasshopper apps for montessori apps-More affordable and far better design.
HPs mama about
Montessorium: Intro to Math, v1.3