Visit this Page with your Phone and use the following Link to install the App.
For iPhone
For Android
1. After downloading the app, accept its installation. Click "install".
2. Navigate to System Settings > General > Profiles&Device Management (Auf Deutsch: Einstellungen > Allgemein > Profil)
3. Click on "Appix AG"
4. Click on "Trust Appix AG" (Auf Deutsch: Appix AG vertrauen)
5. Click on "Trust" (Auf Deutsch: "Vertrauen")
6. Now navigate back to the Home Screen. The Sarna-Granol App should be ready to run.