You can remove the Jobulator app in the same way that you would uninstall any Android app.
Please note that deleting the app would not cancel your recurring payment profile, and removing the app does not automatically cancel your Jobulator account.
Uninstalling Jobulator
Open Settings on your device and tap Apps or Application Manager. (The terminology may differ, depending on your device.)
Touch the Jobulator app that you would like to uninstall and select the Uninstall option.