Is Google maps more accurate than other geolocation apps?

I'm trying to record way points to locate features in open areas. Ideally, I'd use an app like GPS Waypoints, where the waypoints can be tabulated and exported. However, I've done a bit of testing and it seems like Google Maps can achieve better accuracy. Is that because it 'snaps' your location to features on the map (e.g. road)? Does is use location data more effectively than other apps (by incorporating wifi signals etc)? Or is location calculated by the operating system (android), and all apps simply use that (meaning all apps should have the same accuracy)? Thanks!