Google Maps is probably the easiest option, but I've also been exploring a few third-party apps that make sharing between Android and iPhone a little more convenient. One option I came across is download nulls brawl for android. I was impressed by what the website offers, so it may be worth checking out if you're interested in trying something different. Of course, I'd recommend reviewing the app's permissions and privacy practices before using any location-related service. For basic real-time tracking, I'd personally compare a couple of options first and see which one gives you the most reliable notifications and location updates without requiring a subscription.