You have been given an ECG Recorder (Holter) to record your heart rhythm. You are also asked to record your activities and complaints in a diary. With the Hartis App you can easily keep track of your diary. All you have to do is tap the activity and complaint(s) that are bothering you. The Hartis App fills in the date and time itself.How does it work?START•Download & install the Hartis Diary via the App Store on your smartphone;•Then scan the QR code that you receive from your doctor;•You can use the Hartis App immediately.ENTER• You open the Hartis App by tapping the icon;•Tap on new entry and you will see four buttons: date, time, activity and complaint;•Date and time, you do not have to fill in. The Hartis App does this itself;•Tap the activity button. Tap the activity you want to enter;• Then tap the complaints button. Tap on the complaint(s) you want to enter;SAVE•After entering your activity(s) and complaint(s), tap save;•You will now see an overview of your personal diary;•If necessary, press new entry to enter more activities and complaints.