Travelling in the US: Top 20 Must-Have Apps in USA Make Your Life Smarter!

The must-have apps for travelling in the USA are Google Maps and Transit for getting around, Uber and Lyft for rides, ESTA Mobile and Mobile Passport Control for entry, the NPS App and Recreation.gov for national parks, and Yelp and OpenTable for food. A phone loaded with the right apps solves most of the small problems a visitor meets in the United States: getting from the airport without a car, finding a bus that actually runs on Sunday, paying for parking, booking a campsite months ahead or finding a decent meal at 10 pm in a small town. This list covers 20 must-have apps in the USA for international travellers, grouped by what they help you do, from the official border apps to the ones locals use for rides, food and national parks.

Planning more of the trip? Start with our guide to the most famous landmarks in the USA.

Every app here is free to download and works with a non-US phone number unless noted. A few common American favourites, such as Venmo and Zelle, are left off on purpose because they need a US bank account and phone number. If you are still at the planning stage, start with the United States travel page, then come back here before you pack.

How we chose these apps: We picked apps that solve a specific problem visitors face in the US, that are official or widely used nationwide, and that work for people with foreign phones and cards. Features and availability were checked against the developers' and government agencies' own pages in October 2026. App features change often, so read the store listing before relying on any one function.

• Apps covered: 20
• Official border apps: 2
• Park sites in the NPS App: 420+
• Emergency number: 911

Quick comparison of the best travel apps for the USA

The table gives each app's job and the main limit to know about. Tap a name to jump to its card.

20 must-have apps in the USA: full guide

The cards run roughly in the order you will need the apps, from planning and arrival to getting around, eating out and staying safe.

Google Maps

The default way most Americans find an address, and the most complete map of businesses, opening hours and transit routes across the country. It gives driving, walking, cycling and public transport directions, with live traffic that is genuinely useful on the freeways of Los Angeles, Houston or Atlanta, where a 30-minute drive can double at rush hour.

The feature visitors overlook is offline maps. Before driving into places with weak signal, such as Death Valley, the Utah canyon country or the roads around Yellowstone, download the area while on Wi-Fi. Navigation then keeps working with no data. Opening hours and "popular times" are helpful but come partly from business owners and users, so call ahead for anything that matters, like a museum on a public holiday.

• Coverage: All 50 states
• Cost: Free
• Works offline: Yes, for downloaded areas
• Platforms: iOS, Android

Every visitor needs this one. Save offline maps for each national park and rural drive before you set off.

Transit

Transit shows nearby bus, subway, light rail and commuter train departures in real time, using data from local transit agencies. In some cities it also sells tickets or shows bike-share docks. In places like Chicago, Boston, Washington DC or Seattle it often shows arrival times more clearly than a general map app.

Its strength is the home screen: open it and you see the next departures from every stop within walking distance, which is what you want when you are standing on a corner in an unfamiliar city. Coverage depends on what each agency publishes, so smaller towns may only show timetables. Core features are free; a paid tier adds extras.

• Coverage: Hundreds of North American cities
• Cost: Free, optional paid tier
• Tickets: In some cities
• Platforms: iOS, Android

If you are getting around big cities without a car, pair it with each city's own fare app or a contactless card.

Uber

Uber operates in most US cities and at nearly every major airport, where it uses marked pickup zones (follow the "Rideshare" signs). You can pay with a foreign credit card, see the price before you confirm, and share your trip status with someone else. The same app handles Uber Eats food delivery, useful on late arrivals when hotel kitchens have closed.

Prices rise with demand, so a ride from JFK into Manhattan during an evening rainstorm can cost far more than the same trip at 10 am. Compare with Lyft, a yellow taxi or the train before accepting. In smaller towns there may be only a few drivers, especially late at night, so do not count on a quick pickup in rural areas.

• Coverage: Most US cities and airports
• Cost: Fare shown before booking
• Payment: Foreign cards accepted
• Safety: Share trip, in-app emergency button

Airport runs and late nights are where Uber earns its place. Tip in the app afterwards; 15 to 20 percent is common for good service.

Lyft

Lyft is the second big ride-hailing service and covers the United States and Canada; since buying FREENOW in 2025 it also operates in parts of Europe under the FreeNow by Lyft brand. Having both apps lets you compare prices, which often differ by several dollars on the same route. In some cities Lyft also runs the local bike-share system, including Citi Bike in New York and Divvy in Chicago, so one account covers rides and bikes.

Set up the account at home, since verifying a new phone number abroad can be slower. Coverage is thinner than Uber's in some rural areas. Both services use the airport pickup zones, which at large hubs such as LAX can mean a shuttle ride to a separate lot.

• Coverage: US, Canada, parts of Europe
• Cost: Fare shown before booking
• Extras: Bike-share in some cities
• Platforms: iOS, Android

Keep it next to Uber to compare fares, and use the same login for bikes in New York and Chicago.

Amtrak

Amtrak is the national passenger railroad. Its app sells tickets, stores e-tickets and shows train status. The busiest and most useful corridor for visitors is the Northeast, linking Boston, New York, Philadelphia, Baltimore and Washington DC, where the train is often faster than flying once airport time is counted.

Long-distance trains such as the California Zephyr (Chicago to the San Francisco Bay Area) or the Coast Starlight (Seattle to Los Angeles) are slow but scenic, with sleeper cars for overnight legs. Fares rise as trains fill, so book early for popular dates. Outside the Northeast and a few regional lines, service is infrequent and delays are common, so do not plan tight connections.

• Coverage: National rail network
• Cost: Dynamic fares, cheaper in advance
• Tickets: E-tickets in app
• Best use: Northeast corridor, scenic long-distance trips

Use it between Boston and Washington, or for a slow scenic crossing. Check the long-distance schedule, as some routes run once a day.

FlightAware

Domestic flying is how most visitors cover the long distances between US regions, and FlightAware shows live positions, delays and gate changes for flights in and out of US airports. It often reports the inbound aircraft for your flight, which tells you whether a delay is coming before the airline announces it.

Use it alongside your airline's own app, which handles check-in, boarding passes and rebooking. During winter storms in Chicago, Denver or the Northeast, a quick look at the airport's delay map can help you decide whether to rebook early.

• Coverage: Worldwide, strong US data
• Cost: Free, paid extras
• Alerts: Delay and gate notifications
• Platforms: iOS, Android, web

With several domestic legs on one trip, it saves a lot of guesswork. Book flights through our flight search, then track them here.

ESTA Mobile (CBP)

The official US Customs and Border Protection app for applying for an ESTA, the travel authorization that citizens of Visa Waiver Program countries need before flying to the United States. You scan your passport chip, take a photo and pay the government fee in the app ($40 since 30 September 2025, as of October 2026). CBP has proposed making the app the only way to apply, so check the official ESTA site for the current position.

Because many unofficial websites charge extra to submit the same form, using the official app is the simplest way to avoid paying more. It only applies to eligible passports; if yours is not in the program, you need a visa from a US embassy instead.

• Who: Visa Waiver Program nationals
• Cost: Government ESTA fee only
• When: At least 72 hours before travel
• Publisher: US Customs and Border Protection

Visa Waiver travellers should download it only from the official store listing published by CBP.

Mobile Passport Control (MPC)

MPC is a free CBP app that lets eligible travellers submit passport details and a selfie before reaching the immigration desk, then use a dedicated, usually shorter line. It is open to US citizens, permanent residents, Canadian visitors and returning Visa Waiver Program travellers with an approved ESTA.

It works only at participating airports, seaports and preclearance locations, so check the list for your arrival point. First-time ESTA visitors and most visa holders still use the regular queue. The app does not replace your passport, which the officer will still check.

• Where: Participating ports of entry
• Cost: Free
• Who: Returning ESTA travellers and others listed by CBP
• Publisher: US Customs and Border Protection

Second-time ESTA visitors gain the most. Submit only after landing, when the app prompts you.

MyTSA

The Transportation Security Administration app answers the question travellers ask at the packing stage: "Can I bring this?" Type in an item, from a power bank to a jar of honey, and it tells you whether it goes in cabin or checked baggage. It also shows airport security information and crowd-reported wait times.

US security rules differ from some other countries in small ways, for example on liquids in quantities and certain food items, so it is worth checking before a domestic flight. Wait times are estimates submitted by other passengers; arrive early anyway at large airports during holidays.

• Coverage: US airports
• Cost: Free
• Key feature: "Can I bring?" item search
• Publisher: Transportation Security Administration

Open it whenever you are unsure about an item before a domestic flight.

NPS App

The official National Park Service app covers more than 420 park sites, from Yosemite and the Grand Canyon to battlefields and historic houses. It includes maps, self-guided tours, amenities, accessibility details and park alerts such as road closures.

Most parks have little or no phone signal, so the key step is to download each park for offline use before you arrive. Once saved, the map shows your location without service. Content depth varies: the large parks are well covered, while some smaller sites are still being filled in.

• Coverage: 420+ NPS sites
• Cost: Free
• Offline: Per-park download
• Publisher: National Park Service

Before any park visit, download it at the hotel the night before.

Recreation.gov

Recreation.gov is the federal booking system for campsites, cabins, tours, wilderness permits and timed-entry tickets at many national parks and other public lands. Some popular parks have used timed entry or vehicle reservations at busy times, and those slots are sold here.

Popular campgrounds in Yosemite or Zion are released months ahead and can fill within minutes. Create your account early, know the release date, and check the "scan and pay" option offered at some sites. A small booking fee applies to many reservations.

• Coverage: Federal lands nationwide
• Cost: Free app; booking fees apply
• Book: Often months ahead
• Run by: US federal agencies

Campers and anyone heading to a park with entry reservations will need an account. Check each park's page before you go.

AllTrails

AllTrails lists trails across the country with length, elevation gain, difficulty and recent reviews from other hikers. Recent reviews are the useful part: they tell you whether a trail is icy, closed by fire or overgrown before you drive an hour to the trailhead.

The free version is enough for finding and reading about trails. Offline maps and wrong-turn alerts require the paid tier. For anything remote, carry a paper map or a downloaded park map too, and check official park alerts, which take priority over user reports.

• Coverage: Nationwide
• Cost: Free, paid tier for offline
• Key feature: Recent condition reports
• Platforms: iOS, Android, web

Day hikers get the most use from it, and our USA road trips guide pairs well with it.

GasBuddy

Fuel prices in the US vary widely between states and even between stations on the same street. GasBuddy shows user-reported prices so you can fill up at the cheaper station. On long desert or mountain drives it also helps you see where the next station is.

Fuel is sold by the US gallon (about 3.8 litres). Many pumps ask for a US ZIP code when you pay by card; foreign cards often fail at this step, so pay inside with the cashier. Prices are reported by users and can be out of date.

• Coverage: Nationwide
• Cost: Free
• Units: Prices per US gallon
• Platforms: iOS, Android

On a road trip, never let the tank drop below a quarter in remote areas.

ParkMobile

Many US cities use app-based payment for street parking and municipal lots, and ParkMobile is one of the most widely used. You enter the zone number shown on the sign or meter, choose a time and pay by card, with a reminder before it runs out.

Each city picks its own provider, so check the signs: some use other apps or pay stations. Parking rules can be strict, with street-cleaning days and rush-hour tow zones, and a ticket or tow costs far more than the parking.

• Coverage: Many US cities
• Cost: Parking fee plus small service fee
• Alerts: Expiry reminders
• Platforms: iOS, Android

City drivers should read every sign on the pole, not only the top one.

Yelp

Yelp is the best-known US review site for restaurants, bars and local services such as laundromats, pharmacies and car repairs. It is especially useful in small towns, where it often lists diners, barbecue joints and taco trucks that are missing from international booking sites.

Read recent reviews and look at photos of the menu to get a sense of price. Ratings can be skewed by a handful of loud reviewers, so look for the pattern across many reviews. Many listings include a "waitlist" or reservation option.

• Coverage: Nationwide
• Cost: Free
• Useful extra: Menu photos
• Platforms: iOS, Android, web

Small-town food is where Yelp helps most, and our guide to traditional US dishes tells you what to order.

OpenTable

OpenTable handles reservations for a large share of sit-down restaurants in US cities. Popular places in New York, San Francisco or Chicago can be booked out for weekend dinners weeks ahead, and the app shows real-time availability.

Some sought-after restaurants use other platforms such as Resy or Tock, so check the restaurant's own website if it is missing. Cancel through the app if your plans change; some places charge no-show fees on the card you used to book.

• Coverage: Major cities and suburbs
• Cost: Free
• Book: Weekends fill early
• Platforms: iOS, Android, web

For a special dinner on a Friday or Saturday, book before you fly.

WhatsApp

Americans mostly use SMS and iMessage, but WhatsApp remains the easiest way to keep in touch with home over Wi-Fi or data, with free calls and video. It is also how many tour operators and small hotels catering to international guests communicate.

If you buy a US SIM or eSIM, you can keep WhatsApp on your home number. Hotels, coffee shops and libraries generally offer free Wi-Fi, though quality varies.

• Coverage: Worldwide
• Cost: Free over data or Wi-Fi
• Calls: Voice and video
• Platforms: iOS, Android, desktop

Family at home will reach you here. Set up an eSIM before departure so you have data on landing.

Google Translate

English is used almost everywhere in the US, but Spanish is common in many regions, including California, Texas, Florida and New York. Google Translate helps with signs, menus and conversations, and its camera mode translates text instantly.

Download your language pack in advance so it works without data. It is handy for medical or pharmacy visits, where precise wording matters.

• Coverage: 100+ languages
• Cost: Free
• Offline: Yes, with downloaded languages
• Camera mode: Instant sign and menu translation

If English is not your first language, save key phrases for allergies or medicines.

Wise

Paying by card is normal across the US, and contactless payment is widely accepted. A multi-currency account such as Wise lets you hold US dollars and spend with a debit card at the exchange rate shown in the app, often with lower fees than many home banks charge for foreign transactions.

Availability and fees differ by country of residence, so check what applies to you. Carry a second card from a different bank as a backup. Some petrol pumps and transit machines reject foreign cards, so keep a little cash for those moments.

• Use: Card payments, ATM withdrawals
• Cost: Fees vary by country
• Currency: Hold USD
• Platforms: iOS, Android, web

Order the card weeks before travel to keep foreign-transaction fees down.

FEMA

The Federal Emergency Management Agency app sends weather alerts from the National Weather Service for locations you choose, and offers advice on what to do in hurricanes, tornadoes, wildfires and floods. These hazards are seasonal and regional: hurricanes in Florida and the Gulf Coast (roughly June to November), tornadoes across the central plains, wildfires in the West.

Phones on US networks also receive Wireless Emergency Alerts automatically. For any emergency, call 911 from any phone.

• Coverage: Nationwide
• Cost: Free
• Alerts: Up to several locations
• Publisher: Federal Emergency Management Agency

In hurricane or tornado season, add each city on your route as you go.

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How to set up your phone for a trip to the USA

Do the setup at home, on your own Wi-Fi, a week before you leave. Several apps above send verification codes by SMS, and receiving them is easier while your home SIM is active.

Data is the next decision. You can use roaming from your home provider, buy a US eSIM online before departure, or buy a prepaid SIM from a US carrier store after landing. An eSIM is the simplest for most modern phones because it works the moment you land, and you keep your home number for WhatsApp and bank codes. Check that your phone is unlocked and supports eSIM first.

Next, download offline content: Google Maps areas for each region, NPS App parks, Google Translate languages and any boarding passes. A power bank (check MyTSA for cabin rules) keeps everything running on long sightseeing days. Finally, add a US emergency contact and your accommodation addresses to your phone notes, since border officers and rental desks ask for them.

Tips for using travel apps in the US

Set up logins and offline maps before you need them. Use an authenticator app so you can still sign in if SMS codes stop arriving abroad, download maps because coverage disappears in many parks and on desert highways, and carry a power bank in your cabin bag, since navigation drains batteries fast.

• Turn on two-factor login. Use an authenticator app where possible, so you can still log in if SMS codes stop arriving abroad. Check before you fly whether your bank sends codes only to your home number.
• Carry a power bank. Navigation and photos drain batteries fast. Power banks go in cabin baggage, never in checked bags. Airlines also cap power bank capacity, so check your carrier's limit.
• Download before you drive. Mobile coverage disappears in many parks and on desert highways. Offline maps keep navigation working.
• Expect ZIP code prompts. Fuel pumps and some kiosks ask for a US ZIP code. With a foreign card, pay inside.
• Check the final fare. Ride apps show a price before you book; tolls and tips can change the final amount. At airports, follow the in-app signs to the marked rideshare pickup zone.
• Use official apps for official tasks. ESTA, arrivals and park permits should go through government apps or sites, never lookalikes.

Planning a trip to United States? Read our United States travel guide, compare hotels in United States or search flights.