Navionics boating app [1] is free and 1 year daily map updates for Mediterranean Sea costs 20 eur.
It is really cheap and improves safety a lot on board. Even without any navigational experience they can use this app, same can't be said about most nav systems.
I am not saying you should only rely on it, but it is great addition where even passangers can use when main navigator gets injured/is sleeping/...
There have been multiple occasions where I would've ran aground if I had trusted Navionics' charts.
Granted, I sail in Finland which has one of the rockiest waters in the world but in my situation, their products are simply inadequate for any serious use.
But yeah, I could see a use case for it in some situations
It is really cheap and improves safety a lot on board. Even without any navigational experience they can use this app, same can't be said about most nav systems.
I am not saying you should only rely on it, but it is great addition where even passangers can use when main navigator gets injured/is sleeping/...
[1]: https://www.navionics.com/fin/apps/navionics-boating