What are the main pieces for every trip? Passport, money, cell phone – well, this is the Holy Trinity for each traveler. The functionality of the first two is evident and cannot be changed. But there are several apps to optimize the work of the smartphone and to make it not just a brick in your pocket, but a useful device. As you have already spent a lot of money to organize a trip, we found 6 free apps, that will definitely simplify your journey:Continue reading 6 free smartphone applications (+1 as a bonus) you cannot travel without