The Best Apps That Still Work When You're Offline Abroad
Outside the EU's roam-like-at-home zone, mobile data still costs real money. The big American carriers charge roughly ten to twelve dollars a day for international passes, and old-fashioned pay-as-you-go roaming can run to several dollars per megabyte in the wrong country. Even travellers who buy a cheap local eSIM hit long stretches with no signal at all: mountain trails, rural train lines, ferries, and the middle seat of a nine-hour flight.
The apps that earn their keep abroad are the ones that keep working when the bars disappear. Plenty of the most-used Android apps handle offline mode surprisingly well, but nearly all of them need setting up before you leave, on home Wi-Fi, while you still have unlimited data and some patience.
Offline maps come first
Getting lost is the failure mode that actually ruins a day, so start here. Google Maps lets you download an offline area by searching for a city and choosing Download, or by drawing a rectangle over a whole region. Offline, you still get search and turn-by-turn driving directions; walking, cycling and transit directions need a connection, which surprises people at the worst moments. Downloaded areas update themselves on Wi-Fi and expire if they sit stale too long, so refresh them a day or two before departure. We cover the feature's quirks in our Google Maps review.
If your trip involves trails rather than streets, download hiking regions in komoot instead. Its offline maps include the paths, elevation profiles and turn-by-turn voice cues that Google simply does not have for the backcountry; see our komoot review for how its region pricing works before you assume everything is included.
Downloads for the flight
Netflix remains the best-behaved offline video app on Android. Most of its catalogue can be saved for offline viewing, and Netflix's own downloads guide spells out the fine print: you can keep up to 100 downloaded titles on a device at once, some licensed titles expire 48 hours after you first press play, and a few can only be downloaded a limited number of times per year. Smart Downloads will quietly fetch the next episode whenever you touch Wi-Fi, which is exactly what you want mid-trip. More in our Netflix review.
Music is stricter. Spotify only allows offline listening on Premium, where you can store up to 10,000 songs on each of five devices, and you must go online at least once every 30 days or the downloads lock. The free tier streams only. If you are on the fence about paying, a long trip is the strongest argument for it; our Spotify review breaks down where the free tier ends.
Keep learning without a connection
A holiday is when most people finally have time for the language app they installed in January. Duolingo can download upcoming lessons for offline use, but only for Super subscribers; free users need a connection for every lesson, which is easy to forget until you are on the plane. If you want the streak to survive the flight, sort the download out beforehand. Our Duolingo review covers what else Super does and does not buy you.
What your messages do while you are offline
Messaging apps cannot work magic without a network, but knowing how they fail is useful. WhatsApp queues anything you write offline and sends it automatically the moment a connection returns, and messages sent to you while unreachable wait on WhatsApp's servers for up to 30 days before being discarded. In practice that means you can compose replies on the train and forget about them. One habit worth adopting: tell frequent contacts you will be intermittently offline, so a single grey tick does not read as being ignored. Details in our WhatsApp review.
The pre-departure checklist
Every one of these features fails silently if you skip the preparation, so do it two or three days before you fly, not in the departure lounge:
- Download early, on Wi-Fi. A large offline map area or a season of video can run to several gigabytes; hotel and airport Wi-Fi is where downloads go to die.
- Check your free storage first. Downloads fail quietly when a phone is nearly full. Clear space before you start, not after three failed attempts.
- Test in airplane mode. Ten minutes with airplane mode on at home tells you exactly which apps actually kept their promises.
- Carry an eSIM as backup. Offline features cover the gaps, but a travel eSIM bought before departure is usually far cheaper than carrier roaming when you do need to get online.
Download now, thank yourself later
None of this is difficult; it is just easy to postpone. The pattern behind every section above is identical: the app works fine abroad if, and only if, you spent five minutes on it at home. Put map downloads, a playlist, a few episodes and a lesson pack on the phone the same evening you pack your bag, run the airplane-mode test, and roaming charges become something that happens to other people.