Whilst you can select any font available on your windows machine when designing your interface in our guiDesigner software, the only fonts that will work on your control device (your iPad, iPhone, etc) are ones which are preinstalled on the device.
When selecting a font in guiDesigner, you should use the “Device Font Chooser” selection button to choose your font to ensure the font selection will work on your mobile device within iViewer.
If the font selected is not available on your PC, you will see a message informing you that the preview in guiDesigner is not an accurate representation of the chosen font. Instead a generic font will be used in guiDesigner for preview purposes, but the real chosen font will be used on your mobile device when rendering the GUI.
For iOS devices, see this website for details on the available fonts: www.iosfonts.com