sorry for being a bit dumb but is GPS the same as SAT NAV? I want something to tell me where to go, not where I have been? Can Strava / Osmand / MapMyRide ect... do this?
GPS is the system of satellites that allows a device (phone, sat-nav etc.) to know where it is on the globe.
A Sat-Nav (either a phone app or standalone device) can use a GPS signal with a map to guide you to a destination.
The US government own and run the GPS satellites, TomTom make car Sat-Navs.
With navigation you have 2 main flavours. “Turn by Turn” like a car Sat-Navs, or rolling map (following a line on a map, your position always in the centre). On a bike I pre-plot me route taking in back lanes so prefer the rolling map (I use MotionX). If I need to just get somewhere I use “Turn by Turn” (I use the TomTom app in cycle mode, that way I don’t end up on a motorway like M25 man).
If you combine GPS with time then you can do speed and distance and also track/record where you have been.
Some apps do everything, some just some of the above. MotionX will navigate (not turn by turn), track my ride and work as a cycle computer. TomTom will just do navigation and speed. Strava will just track and cycle computer stuff.
It sounds like you’re asking for a turn by turn Sat-Nav app.
TomTom is very good but expensive. The plus is you can also use it as car sat-nav.