1. TripIt: Travel Planner (Free):

• TripIt organizes all your travel plans, from flights to accommodations, into a single itinerary. It also provides real-time updates and notifications.

2. Google Maps (Free):

• Google Maps is an essential navigation tool for finding directions, exploring nearby places, and discovering local businesses and attractions.

3. Google Translate (Free):

• This app offers real-time translation for over 100 languages, making it easier to communicate and understand local text.

4. Duolingo (Free with in-app purchases):

• If you want to learn the basics of a new language before your trip, Duolingo is an effective language learning app.

5. Airbnb (Free):

• Use Airbnb to find unique accommodations, from apartments to villas, and connect with local hosts.

6. Booking.com (Free):

• Booking.com is a great app for booking hotels, hostels, and other accommodations worldwide.

7. TripAdvisor (Free):

• Get recommendations for hotels, restaurants, and attractions, and read reviews from other travelers.

8. Yelp (Free):

• Yelp provides reviews and ratings for local businesses, helping you find the best restaurants, bars, and more.

9. XE Currency (Free with in-app purchases):

• Convert currencies and stay up to date with exchange rates to manage your travel budget.

10. Rome2rio (Free): - Rome2rio helps you plan multi-modal journeys by providing options for flights, trains, buses, and more.

11. Uber (Free): - Uber offers a convenient way to book rides in many cities around the world, making transportation a breeze.

12. Skyscanner (Free): - Skyscanner is an excellent tool for finding and booking flights at the best prices.

13. Google Earth (Free): - Explore 3D imagery of various locations worldwide, offering a unique perspective of destinations.

14. Citymapper (Free): - Citymapper provides public transportation options, real-time transit updates, and navigation in many cities.

15. Pocket (Free with in-app purchases): - Save articles, web pages, and travel guides to read offline during your journey.

16. Weather Underground (Free with in-app purchases): - Check local weather forecasts and conditions to plan your activities accordingly.

17. Maps.me (Free): - This app allows you to download offline maps for navigation without an internet connection.

18. Trail Wallet (Free with in-app purchases): - Track your travel expenses and stay within budget with this handy expense tracking app.

These apps cater to various aspects of travel, from planning and navigation to translation and finding local attractions. Be sure to check data connectivity and roaming options when traveling internationally to ensure these apps work seamlessly during your trip.