Hello.
I am a GIS(Geographical Information System) expert and Web&Mobile(iOS&Android) developer.
Since 10 years before I have been developing GIS applications.
I graduated GIS special education course and I have rich experiences for development Desktop,Web and Mobile GIS applications.
as a GIS developer, I can develop any kind of GIS application based on ArcGIS,GeoServer and GoogleMaps,OSM,MapBox, Cesium, Potree and PointClouds, OpenLayers,PostGIS and PostgreSQL and MS SQL, Sqlite/Spatialite.
I checked your requirement and I am very interesting in your project.
I am not familiar with Phonegap, I am a native app developer.
I have rich experience on the offline map app development but I have not seen any phonegap app for this.
And what is offline map file format?
Mbtiles? mmpk? tpk?
If you are interesting in my profile, please contact me.
I would like to heard from you.
thank you.