I'm new to cycling. I currently use my main phone for routing (Google Maps and sometimes Komoot). I stop and take the phone out of my pocket when needed. I have Garmin watch that I use to track my ride. But I don't actively use Garmin watch while riding, since it is on my wrist and a bit small. I do get the stats after the ride.

I have several older iPhones that I can use on bike. I'm interested in doing that. It will be offline mode (no cellular). If it works well, I can get cellular, which will cost me $10 per month.

But I'm not sure which apps are useful, before I spend money on mount and app. From this thread:

• SuperCycle (free) and Cyclemeter Elite (paid) for cycling computer app.
• Osmand for offline map. But it seems that I cannot make route planning on computer browser (like Komoot). In 10 minutes, I have not successfully made a route on phone yet. It will generate a route, but I cannot change the route take bike path detour thru parks. Am I using Osmand correctly? Is there pro/con of using Osmand, Komoot, or RideWithGPS?