11 November 2026 · GoFlyLo Blog
Your phone is now the most important thing in your bag. It is your map, your translator, your ticket wallet, your bank, and your way to call home. But with thousands of travel apps out there, which ones are actually worth installing? This guide picks the best free apps for the four things every traveller needs: maps, translation, mobile internet, and money. Install them before you fly, set them up at home on Wi-Fi, and your trip will be much easier.

Maps: Google Maps with offline maps downloaded before you fly.
Translation: Google Translate — download the language and use the camera to read signs and menus.
Internet: an eSIM app — Airalo for the biggest choice, Saily for the simplest setup, Yesim if you need a phone number.
Money: Wise or Revolut for fair exchange rates.
Flights: the Aviasales app for price alerts.
Google Maps is still the best all-round map app. Before you fly, download the offline map of your destination: search the city, tap the name, and choose “Download offline map”. Then you can navigate, search for restaurants and find your hotel even with no internet at all.
Maps.me is a good backup — its offline maps work well for walking and hiking, and it marks footpaths that Google Maps sometimes misses. For big cities,
Citymapper is excellent: it shows the fastest route by metro, bus, tram or walking, with live times and the exact platform to use. Citymapper works in London, Paris, Berlin, Amsterdam and many more European cities.
Tip: save your hotel, the airport and the main sights as favourites before you travel, so you can find them in one tap.
Google Translate is free and it is the one translation app you need. Download the language of your destination before you fly — then it works offline too. The best feature is the
camera: point your phone at a menu, a sign or a ticket machine, and the translation appears on the screen in English. It is not perfect, but it is good enough to order food, buy a ticket and ask for directions. The
conversation mode lets you speak in English and shows your words in the local language, then translates the reply back. Learn ten basic words before you go — hello, please, thank you, how much, where is — and people will be much friendlier. For longer trips, the
Duolingo app is a fun way to learn the basics of a language before you travel.
Internet: do not pay roaming charges. Buy an eSIM in an app before you fly —
Airalo has the biggest choice of plans for Europe from around $5,
Saily is the simplest app with plans from around $3.99, and
Yesim is best if you also need a phone number for calls and bank codes. Install the eSIM at home on Wi-Fi. Read our full eSIM comparison for Europe to pick the right one.
Money: your normal bank card works abroad, but banks often add a 3–4% fee on every payment, plus a bad exchange rate. Wise and Revolut give you a card with fair exchange rates and low fees — you top up in your own currency and spend in euros, pounds or any currency.
Both apps let you freeze the card instantly if you lose it, which is a useful safety feature. Keep a small amount of cash for markets and small cafes, but pay by card for almost everything else.
And for flights, install the Aviasales app and set a price alert for your route — it tells you when the price drops. Read our Aviasales guide to learn how it works.
Google Maps with the city map downloaded before you fly. Maps.me is a good backup for walking and hiking routes.
No — download the language in the app before you travel and it works offline, including the camera translation.
Airalo is the best overall choice — 39 countries, plans from around $5. Saily is the simplest, and Yesim is best if you need a phone number. See our eSIM comparison.
Yes, but your bank may charge 3–4% on every payment. Wise or Revolut give fair exchange rates and lower fees, and you can freeze the card in the app if you lose it.
Best eSIM for Europe Travel 2026 · Airalo — Full Guide · Saily — Full Guide · Aviasales — Full Guide
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