Fantastic app. My wife and I are gradually becoming able to recognise more and more birds by their call. This is great because the human ear is better than the app at rejecting environmental noise - so we can spot birds by their call even close to a noisy road when the app cannot.
The app, at least on my Pixel 6, struggles with very high frequency calls - e.g. long-tailed tits.
My best spot yet? A nightingale in Wimbledon.
I feel like we share interests and location. The long-tailed tits in Wimbledon present no trouble for Merlin my Samsung phone, but I've never seen a nightingale round here.
My best spot yet was also a nightingale in Spain. I imagine the UK is even better for bird spotting.
I find it great for familiar birds that only make certain calls when they are less visible and others out in the open. Let's you connect the variety of sounds throughout the day to specific species.