How does the mobile app work?

The mobile app works on smartphone and tablet. Click here to go to the guidelines for the web app.

Start of the time diary

After opening the mobile app you can click on the three horizontal lines to open the main menu and adjust your settings or log out. When you click on settings and then on the pencil you can edit your preferred language. The three horizontal lines bring you back to the main menu. When you click on researches, you will find the time diary for this study. Click on the time diary to get started.

Click on the SETTINGS to edit your name, email address, or preferred language. Click on LOGOUT to sign out. Click on RESEARCHES to go to your time diary.
Select your preferred language and click on OK.

The first time you start your time diary, you will see an empty screen. Click on the plus sign (+) to register your first activity.

Click on the plus sign (+) to start registering your first activity.

For every new activity, you register when it took place, what you did, if you did anything else at the same time, where it took place or what mode of transport you used, with whom you were, and how you experienced the activity.

You register a new activity whenever the activity or the context of the activity changes (e.g. what else you were doing or where of with whom you were).


Every new activity is registered by clicking on the plus sign (+). The very first activity starts at 4 am. It is not possible to change the start time of your first activity. You can change the end time in function of the duration of your first activity.

Overview of start time and end time when you start the time diary.
You can change the end time of the first activity by clicking on the time display.

For every next activity that you register, you can adjust the start time and and end time in a similar way. Your time diary always suggest the end time of the previous activity as the start time of the next activity. You can change the start time. If this causes any time gaps in your registration, you will receive a notification (see further).

Experienced users can use the time tracker. The moment you activate the time tracker serves as the start time of your activity. The moment you turn off the time tracker serves as the end time of your activity.

Use the time tracker to register activities that are ongoing.

What you did?

Click on next when you have set the start time and end time and/or activated the time tracker. You will enter the screen that allows you to select what you did. There are two ways to do this. You can use the tree structure to select your activity. First, choose a main category (e.g. Paid work). Next, choose a subcategory (e.g. Paid work (all paid work)). Finally, choose the detailed activity.

Choose your activity using the tree structure.

You can also use the search function to find your activity by typing in a keyword in the search field Search category. Based on your keyword, you will get suggestions from which you can select your activity. Once selected, you can check the box Add to favorites below the list. This saves the activity in your favorites and makes it easier to use again. More experienced users can also search on the activity codes. For example, if you search on “400” you will find the activity 400. Sleep at night/daytime rest.

Select your activity from the suggestions and add to your favorites.
Switch from List to Favorites to see select from your favorite activities.

What else did you do?

After selecting your main activity, you will be asked to select a secondary activity. A secondary activity is an activity that took place at the same time as your main activity. For example, eating (main activity) while watching television (secondary activity). Select your secondary activity in a similar way as your main activity.

If you did not do anything else, select I did not do anything else.

Select your secondary activity. If you did not do anything else, select I did not do anything else.

Where and with whom?

After every activity, you will be asked to register where and with whom you were. The only exception is when you travelled. In that case you will be asked to register your mode of transport and with whom you were. You can only choose one option for location and mode of transport. You can choose multiple options when registering the presence of others (unless you were alone at the moment of the activity).

If the context changes (e.g. where, with whom, or mode of transport), we ask you to register this as a new activity.

The additional questions ask you to register where the activity took place (see image), with whom you were, or which mode of transport you used when registering travel.

Other context

For some activities you will be asked to answer, for example, how much you enjoyed the activity.

Example of additional question gauging your enjoyment of the activity.

Your timeline

After registering start time and end time, main and secondary activity, and activity context, click on OK. Your activity will appear in your timeline.

After clicking on OK, your activity will appear in your timeline.

You can see the details of your activity when clicking on the arrow >. This overview also allows you to change any of the details by clicking on the respective elements. You can delete your activity by clicking on the trash icon. Click on the backwards arrow < to go back to your timeline.

Overview of your activity.

In your timeline, you can register a new activity by clicking on the plus sign (+).

Your final activity

The app will automatically close your time diary when you completed the final day of your registration period. You can return to your time log by clicking on RETURN TO TIMELINE. Finalize your time diary by clicking on SUBMIT.

The final screen of your time diary. Click on SUBMIT to finalize.

The app helps you

When registering your activities, notifications may appear on your screen. These notifications help you by recording your time diary. Notifications might point out to overlapping start times and/or end times, registering activities in the future, time gaps in your timeline, or missing answers on the activity context questions. These notifications will disappear when you edit your activity.

Pop up message notifying you that your end time falls before your start time.
Pop up message notifying you that your activity takes place in the future.