Best travel apps: maps, translation, transport and banking

Do this in the week before you fly, on home wifi, with your home phone number still active. Each step removes a specific failure later; the whole list is an hour's work at most, and often less (check).

First, install an offline map and download the areas you will visit. Download the whole city plus the airport corridor, not just the centre; the airport is where you most need directions and least have data. Second, install a translation app and download the language packs for every country on your route. Text and camera translation usually work offline once the pack is downloaded; live conversation mode often needs data.

Third, install the ride-hailing app that dominates your first city and complete registration, including any photo or phone verification. Do this at home, not in arrivals at midnight. Fourth, open your bank and card apps and check the foreign transaction fee, the daily ATM limit and how to unfreeze a card. Check your bank's current policy on travel notices; some banks ask for one, others no longer need it.

Fifth, decide your data plan. An eSIM can be bought before departure and activated on arrival, but activation steps and device compatibility vary by provider, so read the terms for the one you choose; a local SIM is often cheaper for long stays but needs a shop and a passport. Sixth, save offline copies of the essentials: boarding passes, the first night's address in the local script, your insurance policy number and a photo of your passport page. Seventh, pack a power bank and the right plug adapter for your destination.

Most of this is free. Maps, translation, ride-hailing and bank apps cost nothing to install and nothing to use beyond the data they consume. Paid tiers exist mainly to remove ads, add offline bulk downloads or raise translation limits; prices differ by app and change often, so check the current price in the app store rather than budgeting from a figure here.

The real cost is data. Travel eSIM prices and local SIM prices vary widely by region, allowance and provider, so compare current offers for your dates rather than assuming a band (check). A local SIM in much of Asia, Europe and Latin America is often cheaper per gigabyte but costs a shop visit and a passport copy. Roaming on your home plan is usually the most expensive option and the one most likely to produce a bill shock.

Time is the other cost. Setting everything up properly is an hour's work at home, not more (check). Doing it badly costs far more: an hour in an airport queue trying to verify an account, or a morning lost to a blocked card. Budget the hour.

Some countries block or restrict specific apps, and some services simply do not operate there. Ride-hailing coverage is patchy outside major cities, and in a few markets the dominant app is a local one you have never heard of. Check which app works in your first city rather than assuming the one you use at home is present.

Banking is the most common failure. A card can be declined by an automated fraud rule on the first foreign transaction, and unfreezing may need a code sent to your home number. If you have already swapped to a local SIM, you may not receive it. Carry a second card from a different bank, keep your home SIM reachable if your phone supports two lines, and know your bank's international collect-call number.

Translation apps handle menus and signs well and idioms badly. Camera translation struggles with handwritten signs and stylised scripts. For anything that matters, a medical appointment or a police report, use a human interpreter or a hotel desk rather than an app. And no app replaces a paper backup: a printed booking, a written address and a photocopy of your passport page still work when your phone does not.

Each job has a different failure mode, so judge each app on what happens when the network drops. Maps and translation can be made to work offline with preparation. Ride-hailing and banking cannot, which is why they belong to the arrival window when you should have data and battery.

For maps, the question is whether you can download a usable area and search it without a connection. For translation, it is whether the language pack covers text and camera offline, and whether conversation mode needs data. For transport, it is whether the app operates in your city at all and whether it accepts a foreign card. For banking, it is the fee, the limit and the unfreeze path.

If you only prepare one thing, prepare the offline map. It is the app you will reach for most often, it works with no signal, and it costs nothing but a download.

The questions below cover the short answer, who this applies to, and the cost and time involved.

This page is general information, not financial or legal advice. App availability, fees and data prices change often; confirm current details with your bank, your mobile provider and the app itself before you rely on them. Anything marked check on this page is a figure that moves and should be verified for your dates.