價格：免費
檔案大小：30.6 MB
版本需求：需要 iOS 6.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
Extremely detailed animated and verbal exploration of income and substitution effects.The Income Effect and Substitution Effect are each developed separately in multiple cases, then they are combined and developed in several cases.
Jump forward or back by segment, or to different graphs
Swipe left/right for next/previous segment
Swipe down/up for next/previous graph
Controls fade when not in use
支援平台：iPhone, iPad