It has been on Android phones for a while, but now Field Trip is available for iOS devices.At least, that's the theory. The reality is that the app is designed for the smaller screen. So if you try and download for an iPad, you'll get the app, but far from ideal for the larger screen.But for the iPhone, it's just great. It is also what Google describes as 'your guide to the cool, hidden, and unique things in the world', running in the background and notifying you when any of those things are in your area. If you have a headset or bluetooth connected, it can even read the info to you, if that's what you prefer.Everything from local history to the latest and best places to shop, eat, and have fun are listed and curated via a plethora of publications and websites. The downside is its current bias - the US is obviously the biggest source right now, along with key cities. If you are sat in a town in the north of the UK, there's little chance of anything being flagged up just now.But it should be useful as you travel around, with the app letting you know if you happen to be walking or driving past anywhere interesting. It should be invaluable if you happen to be planning a jaunt to somewhere like New York too.Best of all, the app is free and available in the app store right now.