Travel apps get smart

For Irish holidaymakers, the smartphone has replaced every guide book and unwieldy map that used to be standard fare while travelling.

The switch however has come at a cost as, despite action by the European Union, roaming charges are still a big expense for many users.

Developers are working around this issue with many apps, such as translation tool Word Lens, not requiring a data connection to operate.

The most crucial aspect, however, ...