Any map prepared with MapTiler can be loaded and used offline (without Internet connection) on iPad or iPhone. You will see your actual GPS position on the top of such map. All you need is MapTiler, Google Drive account and app GeoEditor for MapTiler. You can download it from:
Tutorial in steps
1. Process your map in MapTiler
On your computer, turn on the MapTiler and choose Standard tiles. For devices with Retina Display, we strongly recommend to check the HiDPI / Retina tiles option (available in MapTiler Plus / Pro)
Drag and drop the image inside and confirm suggested coordinate system. If the image contains geographical location, it is picked up automatically. Otherwise you can assign location visually, define the bounding box or load it from external file. Georeferencing tutorial shows the Assign location visually option.
On the format chooser screen choose Mobile device option. This will process your image for mobile devices.
Wait until your map is processed.
In next step, you will upload your map to Google Drive. Click on Start upload button to start.
Map is ready now, preprocessed and prepared in your Google Drive to load into GeoEditor.
2. Open in mobile device
On your iPad/iPhone, download GeoEditor for MapTiler from AppStore and Launch MapTiler App by clicking on the icon.
You can see base layer in app, now we need to add your layer from Google Drive.
In top left corner is hamburger menu. Open it and choose Manage layers. Now click to add layers button. This will open add layer dialog. Here you can add layers from remote resources.
Switch to Google Drive card and connect your account.
Now you can see layers in your Google Drive prepared for your app. Tap to layer and download it to a mobile device.
Now go to a map screen and you can see your map.