Designing a simple android app

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
We are looking for a developer to develop an android application with the main features included. The application will have a simple UI which has 4 buttons (sensors, data, e-mail, dropbox).

Application Features:

1- Sensor
-shows x,y,z axis readings
-shows graph of the readings (while still logging data) (important!)
-recording data (record data on a text file)

-Gyroscope (same with accelerometer)
-Magnetometer (same with accelerometer)

2- Data
-Text Files (must be able to delete them)

3- E-mail
-able to see all text files
-select one and automatically attach the selected file to email
-use phones email to send the email

4- Dropbox connection
-dropbox provides some API
-authentication needed
-uploading files to dropbox

Skills required:
Android, Mobile Phone
About the employer:
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$ 200
in 5 days