To open google maps on ios, you need to use a specific URL scheme (for each application, if provided), for example, the following calls will display google maps:
comgooglemaps://?daddr=%f,%f&saddr=%f,%f&mrsp=0&ht=it&ftr=0", contactPosition.latitude, contactPosition.longitude, myPosition.latitude, myPosition.longitude
and this wil open waze:
waze://?ll=37.331689,-122.030731&navigate=yes
In both cases, the user obviously needs to install applications for this to work.
source share