價格：免費
更新日期：2013-11-03
檔案大小：361k
目前版本：2.0
版本需求：Android 2.2 以上版本
官方網站：http://about.me/tiagoduarte
Email：ftlcd@sapo.pt
This aplication calculates, through the "Rule Of Three", the value of a fourth element, based on knowing the values of three other related elements.
The fourth element can be in any of the four available boxes.
Supports decimal points and displays appropriate error messages, where applicable.