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Your smartphone is your most important travel tool in Japan. With the right apps installed, you can navigate the complex train system, translate menus written entirely in kanji, find restaurants that locals love, and communicate with people who speak no English. But you need to download and set up these apps before your trip — preferably while you still have your home Wi-Fi connection and plenty of time to configure offline features.
Here is our curated list of essential apps for Japan, organized by category. All are either free or have free versions that are more than sufficient for travel.
Prerequisite: All of these apps require an internet connection to work at their best. Make sure you have your connectivity solution sorted before you arrive — an eSIM is the quickest way to get online.
Navigation Apps
Google Maps
Free | iOS & Android
Google Maps is exceptionally accurate in Japan and should be your primary navigation tool. It provides real-time walking directions, driving routes, and — most importantly — detailed public transit directions including platform numbers, transfer instructions, and real-time delay information. In Japan, Google Maps can tell you exactly which exit to use at a subway station, which car to ride for the fastest transfer, and even estimates walking time between platforms.
Pre-trip setup: Download offline maps for the regions you will visit (Settings > Offline maps > Select your own map). While online maps with transit data are better, offline maps are a crucial backup if you lose connectivity.
Japan Travel by NAVITIME
Free | iOS & Android
A Japan-specific navigation app that sometimes provides more detailed transit information than Google Maps. It is particularly good for finding the cheapest route (vs. fastest), showing JR Pass-eligible routes, and providing indoor navigation for large stations. The free version covers most needs; the premium version adds features like offline search.
Transportation Apps
Suica / Mobile Suica
Free | iOS (built into Apple Wallet) & Android (Suica app)
Mobile Suica turns your phone into a rechargeable transit card. Tap your phone on station gates and bus readers instead of buying individual tickets. It works on virtually all trains, subways, and buses across Japan. On iPhone, add Suica through Apple Wallet (Wallet app > tap "+" > Transit Card > Suica). On Android, download the Suica app from the Play Store. You can load money from your credit card directly in the app.
Set up Mobile Suica before arriving in Japan. You can add money to it from any international credit card. Physical Suica cards are currently difficult for tourists to obtain, so the mobile version is strongly recommended.
Jorudan (Norikae Annai)
Free | iOS & Android
Japan's most popular transit planning app among locals. Enter your departure and arrival stations, and Jorudan shows you every possible route with precise times, fares, and transfer details. It is especially useful for Shinkansen trip planning and comparing prices between different express trains.
Translation Apps
Google Translate
Free | iOS & Android
The single most important app for non-Japanese speakers. Its killer feature is camera translation — point your phone camera at a menu, sign, or label, and the app translates the text in real time through your screen. It also handles voice translation (speak English, hear Japanese), text translation, and handwriting recognition. Download the Japanese language pack for offline use.
Pre-trip setup: Open Google Translate > tap the download icon next to "Japanese" to save the offline translation package (about 50 MB). This ensures translation works even without internet.
Papago
Free | iOS & Android
Developed by Naver (the Korean tech company), Papago often produces more natural translations for Asian languages than Google Translate. It is an excellent secondary translation app. Its conversation mode is particularly smooth for face-to-face communication — you speak English, the app speaks Japanese, and vice versa.
Food and Dining Apps
Tabelog
Free | iOS & Android (English version available)
Tabelog is Japan's most trusted restaurant review platform — far more reliable than Google Reviews or Yelp for finding quality food in Japan. Ratings above 3.5 indicate an excellent restaurant; above 4.0 is exceptional. The app shows photos, price ranges, hours, and whether reservations are needed. The English version has improved significantly and covers most tourist areas.
Gurunavi
Free | iOS & Android
Another popular Japanese restaurant guide with good English support. Gurunavi is particularly useful for its reservation system — you can book tables directly through the app in English, which solves one of the biggest challenges for foreign visitors (many popular restaurants require reservations and staff may not speak English on the phone).
SmartNews Japan
Free | iOS & Android
While not strictly a food app, SmartNews aggregates coupons for many Japanese restaurant chains and convenience stores. It can save you 10–20% at places like Matsuya, Sukiya, and other popular chain restaurants that budget travelers frequent.
Communication Apps
LINE
Free | iOS & Android
LINE is Japan's dominant messaging app — used by over 90 million people in Japan. While WhatsApp and iMessage work fine for communicating with fellow travelers, LINE is essential if you want to communicate with Japanese people, businesses, or hotels. Many restaurants, shops, and even tourist information centers communicate via LINE. Some hotels send check-in instructions through LINE. It also has a built-in translation feature for Japanese-English conversations.
WhatsApp / iMessage
Your usual messaging apps work perfectly with your eSIM data connection. Use them to stay in touch with family and friends back home. With an eSIM, you have data-based messaging from the moment you land.
Practical Tools
XE Currency Converter
Free | iOS & Android
Quickly convert yen to your home currency while shopping or dining. At current rates, 1,000 yen is roughly $6.50 USD. Having a converter handy helps you make quick decisions about purchases and tipping situations (remember: no tipping in Japan). Set up your home currency before the trip.
Pocket / Notion / Apple Notes
Save restaurant recommendations, hotel addresses, and travel tips from blogs and guides into a note-taking app. Having key information saved offline means you can access it even without internet. Save your hotel address in Japanese characters — essential for showing taxi drivers where you need to go.
Visit Japan Web
Web app (no download needed)
Japan's official immigration and customs pre-registration system. Complete your registration at vjw.digital.go.jp before your flight. You will receive QR codes for immigration and customs that speed up the arrival process significantly. Bookmark this site and have it accessible on your phone.
Weather App (Tenki.jp)
Free | iOS & Android
Japan's most accurate weather app. While your default weather app works fine, Tenki.jp provides hyper-local forecasts, rain radar, and typhoon tracking that are more precise for Japanese locations. Particularly useful during rainy season (June) and typhoon season (August–October).
Before your flight, make sure you have downloaded: Google Maps (with offline maps), Google Translate (with Japanese offline pack), Suica/Mobile Suica, Tabelog, LINE, and your eSIM profile. These six items cover 90% of your daily needs in Japan.
The key to getting the most from these apps is setting them up before you leave. Download language packs, offline maps, and transit data while you are on your home Wi-Fi. And of course, all these apps work best with a reliable data connection — check our complete Japan guide for more preparation tips.
Power your apps with reliable data
All these apps need internet. Get your Companion Mobile eSIM for fast, affordable data across Japan.
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