OSMAnd supports OSM contributors with free Live Updates

Useful feature - install the OpenStreetMap editing plugin, link to your OSM account, and after a check that you are a regular contributor, OSMAnd will offer free Live Updates to maps which are otherwise a freemium paid feature.

In my second decade of OSM contributions, Garmin GPSr (e.g Oregon) have largely been replaced with a phone for maps and a dual-band GPSr watch (Foreunner 255) for GPX data collection. The large screen means you can get more situational awareness of what's nearby when out surveying ground-truth.

Has it really been that long since OSMAnd started and I first loaded it on a phone? Time flies...