Substify: Logic app for iPhone and iPad

Substify is a game of problem solving by transforming mathematical expressions.

The game consists of dozens of levels with mathematical logic problems.

At each level, you need to reduce the expression to the goal by a sequence of transformation steps.

Its simple:
• study the expression,
• click on the place in the expression you want to transform,
• select a substitution from the list of suitable ones for the clicked place,
• the expression is transformed automatically,
• cheers, youre one step closer to victory!

If something doesnt work, or you just want to leave feedback, you can find us here:
• VK group — https://vk.com/mathhelpergames
• site — https://www.mathhelper.space