We are interested in developing a navigation app for Android and iOS based on OSM. While looking into SDKs, we came across Sygic and HERE but both of them donot use OSM. Our main requirements include
TTS for Navigation in multiple Languages
Offline Region wise Maps
Vehicle Customized Configuration (eg Waight, Height, Width, ADR Tunnel Codes specially for trucks)?
Traffic Incidents Different Measurement Units (kmph, mph)
Coorinates (Compass with multiple units e.g. degree, minutes)
Route Planning (e.g. Route with Tolls, without tolls, local route vs highway, fastest, most economical),
Are there SDKs with good documentation for IOS and Android that use OSM and provide the above features?