Turn-by-turn navigation on imported routes for iphone

[pinifarina]

Hi there!

I´m planning a motorcycle trip to the Alps so i´m looking for a gps software for my iphone 5s.
But the more i read, the more i get lost as each software has upsides and downsides.

So, can someone please help me on this?

I need a gps software for my iphone that:
- Allows offline navigation (maps on the iphone and using only internal gps antena)
- Allows to import tracks/routes pre-planned on my laptop
- That does not re-calculate the imported tracks/routes from laptop (very important - i want it drives me exactly through the course i planned on my laptop)
- Allows turn-by-turn navigation for imported tracks/routes
- If i get out of the course (by some reason), it can drive me back to the original course (to the point where i got out of the course or even to the nearer point of the original course).

Btw, a friend can borrows me a Garmin NUVI 2545 LM (Europe).
Does this device allows the above needs?

Anyone, please?

Thanks!

[sussamb]

The 2545 will do most of that I believe, although with any GPS there is a possibility it may reroute depending on the map it uses, and the avoidance and routing settings on the device itself.

This can be minimised by using Garmin's Basecamp program and ensuring you plan the routes using the same maps as on the device itself, and setting avoidances and routing to match the device as closely as possible.

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