Every Day Math (En)

This is a software to do math that's used daily. Currently, this software includes popular unit conversions such as length/distance units, weight/mass units, area units, capacity/volume units and temperature F/C conversions. A simple health index BMI computation is also included.
There is one corresponding Chinese version.

Come join YPK Android Software on FaceBook. Any positive suggestions are welcomed. I mostly will post updates of the program on this FB page.
If you like the program, please tell others. If you find a bug or problem, please let me know: don't just post an error here. That's nicer. thx.

1.10 add (sqlite)database capabilities. It can help you record your personal (math) data, such as such as: personal health index/info and credit card monthly payment, autoloan, mortgage, student loans, personal loans, etc. Also, little numbers such as state tax rates, loan rates, etc.
1.13 Now, you can add MathNote(s). It indeed can be a Note Database for any text; here, Math related note is best suited (for this App).
1.14 Fixed a bug in BackUp/Restore. Search functions are important, but the implementation will be delayed until users' demands. Users probably can just use 10 notes to handle daily notes.