roubaixtuesday
self serving virtue signaller
No technology needed, a few OS maps of your area is all you really need, you'll soon memorise the routes and roads. Sit at home with a cup of tea and look at the map in peace, put it in your pocket on rides for reference.
I prefer the laminated OS Explorer.
£10 each from Dash4it
https://dash4it.co.uk/act-5-the-english-lakes-north-easter..html
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The OS app is great as a back up particularly if you're in one of those locations you'd otherwise need four of them.