Tube Map: Before you leave the UK you may well have to navigate the London Underground. For novices this can be a daunting prospect, especially with family and luggage in tow. Tube Map makes negotiating the tube a doddle. If features a full colour map of all lines, a search engine and a route planner that generates easy-to-follow maps.
For: iPhone, iPad and Android (free)
Hailo: If you'd rather travel overground through London, a taxi might be the best option for transporting your luggage. Hailo gives you a live map showing the location of cabs near you. Simply press the 'Pick Me Up' button and the next available cab will receive your request and head over.
For: iPhone and Android (free)
New York Subway: Like the London Underground, New York's sub is pretty complicated and daunting for newbies. This app provides maps, search and route planner utilities, as well as an augmented reality mode that uses your device's camera to overlay nearby stations onto your streetview display.
For: iPhone (£0.69) and Windows Phone (£0.79)
AlpineQuest GPS Hiking: Climbing can be a dangerous pastime, especially if you are alone and unfamiliar with the territory. This map will ensure your safe return, using GPS technology to pinpoint your location and provide a detailed topographical map to help you find your way.
For: Android (£3.99)
HopStop: Public transport is a great way to get about, but getting to grips with an unfamiliar system can be tricky. HopStop does all the hard work for you, providing a stop-by-stop itinerary for the public transport systems in 68 countries all over the world.
For: iPhone, iPad, Android and Windows Phone (free)
Speaking the Lingo
Word Lens: Using your device's camera, Word Lens scans foreign text and instantly translates it into your preferred language, making reading street signs and menus an absolute breeze.
For: iPhone and iPad (free, but with in-app charges of up to £6.99)
Better Translator Pro: Rated the best Android translator, this app supports over 50 languages in text-to-text mode, plus 11 languages in voice recognition mode, meaning you'll never be lost for words while you're away.
For: Android (£1.95)
Lost in Translation: With 36 languages supported, this app is considered the best translator for the Windows platform. It does not yet include a voice recognition mode, but allows for quick and easy searching of its massive database.
For: Windows Phone (free)
Staying in Touch
WhatsApp Messenger: Keeping up with the goings on at home can be pricey while you're abroad, with data roaming charges and fees on calls and text messages. WhatsApp Messenger solves this problem, allowing you to exchange data in text, image, video and audio format internationally and with no additional charges.
For: iPhone, Android and Windows Phone (free)