add 3 features in the application simple calculator.

Component

calculator with basic functions and widgets can be adjusted. you can copy results or formula to clipboard with long Press. text color widgets can be adjusted, as well as color and Alpha background. Press results or formula widget to open the application. contains no ads or permission unnecessary. this fully open source, providing the color that can be adjusted. this application is just one of a series of a larger application. you can find it the
http://www.simplemobiletools.com

Proposal

Suggestions for this app, please add some features.

1. Please add volume conversion feature.
2. Please add speed conversion feature.
3. Please add temperature conversion feature.

Mockups / Examples

Display Before adding some features. Can be seen below.

Example of display after adding some features by developer.

1. Users can convert volume.
   (Examples of views from other apps)
   

2. Users can convert speed.
   (sample views from other apps)
   

3. Users can convert temperature.
   (sample views from other apps)
   

Benefits

Easy users when converting volume, speed, and temperature enough with the features as above. Users no longer need to download the conversion app in the play store.