The 10 best travel apps

1. Travel Zoo

Free, iPhone

Get the inside track on all the latest travel deals with Travel Zoo, which checks out the best reductions, then gives you a "top 20" list. A great way to discover off-beat events.

2. Currency Exchange

69p, iPhone, Android, BlackBerry

Don't fuss around trying to figure out if you've been short-changed. This app tracks currency changes around the world in real time. Useful if you're on a budget.

3. Kayak

Free, iPhone, Android

Kayak is so simple to use: you enter your starting point, destination and dates and Kayak will search airlines, local and international, to find the cheapest possible option.

4. Lonely Planet City Guides

£3.99, Android, iPhone, Nokia

The Lonely Planet apps offer 125 easy-to-use city guides, which include expertly chosen sights and attractions, and city maps that work when your phone is offline.

5. Off Exploring

Free, iPhone

If you're off on a long trip, you'll want to let everyone know what you're up to. This app allows youto type up a blog post, add a location and photographs.

6. Lonely Planet Phrase Book

£5.99, Android, iPhone, Nokia

Forget about buying weighty phrase books, download the Lonely Planet's superb app instead. The interface "speaks" phrases and also displays them phonetically.

7. Cool Places

£1.99, iPhone

This series of 30 apps focuses on one specific area. Just download a city app and you get expert-picked highlights split into "see & do", "eat & drink" and "sleep".

8. Weather Pro

£2.49, Android, Nokia, iPhone, Blackberry

Some weather apps are not much use if you're off the beaten track. Weather Pro gives forecasts for everywhere from Tring to Taipei.

9. Trip Advisor

Free, Android, iPhone, Nokia

Although it's taken a knocking in recent months, Trip Advisor remains the must-have app for user-generated reviews of hotels and tourist attractions.

10. Worldmate

Free, Android, BlackBerry, iPhone

You can use this app to book hotels, flights and car hire. Then simply forward the confirmation details to the app and it creates a detailed itinerary.