The instructions for the PIEL Survey are largely identical for iOS and Android devices.

This similarity simplifies the job of the researcher.

The instructions can be found in in the following sections. Differences are highlighted with a button to show the alternate instructions.


Plan your research project using the PIEL Survey app. This section will put into context all the other instructions.

Control File: Structure

The survey control file is a text file which controls the survey. It is easily read and edited but offers considerable flexibility in creating a survey. This section sets out the required syntax and method of saving the file.

Control File: Survey Information

The first major part of the control file is the survey information. This includes identifying data and how the survey behaves.

Control File: Survey Questions

The core part of the control file is the section which creates the questions and the branching logic.

Survey Setup

This section outlines how the participant imports the control file and manages the survey created from that control file.

Run Survey

Running a survey is intuitive for most users so only a brief explanation is required. In this section we also explain user actions when a survey ends. There is also a method of stopping a scheduled survey, but this should only be used if a mistake is made in starting the survey in the first place.

Export Results

The participant will need to take action to send back the data at the end of the survey. This can be easily achieved by email or file sharing. This section also outlines the structure of the data file.

Device Setup

This section is the most important for participants. By far the majority of devices will be set up to run the PIEL Survey with no setup of the device required but in some situations such as if a participant disables notifications or if using some older devices, some device information may be required. Please note that at this stage, the PIEL Survey app does not support Oppo devices for scheduled surveys.