Quick Answer: The single most important app for living in Japan is LINE — used by virtually everyone for personal and professional communication. Beyond that, PayPay (mobile payments), Google Maps or NAVITIME (navigation), and Google Translate (camera translation) form the essential toolkit for daily life as a foreign resident.
Communication
1. LINE (Free)
LINE is Japan's dominant messaging app — equivalent to WhatsApp in other countries, but even more deeply integrated into daily life. Your workplace, school, landlord, hospital, and friends will all expect to reach you via LINE. Features include text chat, voice/video calls, group chats, official accounts (businesses, government), and LINE Pay.
Tip: Set up LINE early — many services (banks, government, shops) offer LINE official accounts for notifications and customer service.
2. WhatsApp (Free)
While not widely used among Japanese people, WhatsApp remains essential for staying connected with friends and family in most other countries. Keep both LINE and WhatsApp installed.
Navigation & Transit
3. Google Maps (Free)
Works well for walking, driving, and general navigation. Train/bus transit directions are accurate but sometimes miss the cheapest route or platform details.
4. NAVITIME or Yahoo! Transit (Free with premium options)
For transit specifically, Japanese navigation apps often provide more detailed information: exact platform numbers, which train car to board for the quickest transfer, real-time delay information, and fare comparisons between routes. NAVITIME offers English support.
Translation
5. Google Translate (Free)
The camera mode is invaluable — point your phone at Japanese text (menus, signs, letters) and see instant translation overlaid on the image. Also supports conversation mode for real-time speech translation. Download the Japanese language pack for offline use.
6. DeepL (Free with premium option)
Generally provides higher-quality Japanese-English text translation than Google Translate, particularly for nuanced or formal text. Useful for translating official documents, emails, and complex instructions.
Money & Payments
7. PayPay (Free)
Japan's most widely accepted QR code payment app. Accepted at convenience stores, supermarkets, restaurants, taxis, vending machines, and small shops. Setup requires a Japanese phone number and bank account or credit card.
8. Suica / PASMO (via Apple Pay or Google Pay)
Transit IC cards for trains and buses, now available digitally on your phone. Tap to ride trains, pay at convenience stores, and vending machines. Can be charged via credit card in the wallet app.
Payment Apps Comparison
| App | Type | Acceptance | Best For |
|---|---|---|---|
| PayPay | QR Code | Very wide | Shops, restaurants, online |
| Suica/PASMO | NFC (tap) | Very wide | Transit, konbini, vending machines |
| iD | NFC (tap) | Wide | Post-pay linked to credit card |
| QUICPay | NFC (tap) | Wide | Post-pay linked to credit card |
Recommendation: Start with PayPay (widest acceptance for QR payments) and Suica (fastest for transit and convenience stores). Add iD or QUICPay later if your credit card supports them.
Daily Life & Shopping
9. Uber Eats / Wolt (Free)
Food delivery services. Uber Eats has wider restaurant coverage. Wolt (acquired by DoorDash) is popular in cities with curated restaurant selection. Both have English interfaces.
10. Amazon Japan (Free)
amazon.co.jp — same Amazon experience, delivered quickly. Most product pages can be translated in-browser. Create a Japanese Amazon account for fastest delivery.
11. Mercari (Free)
Japan's largest peer-to-peer marketplace. Great for finding used electronics, clothing, furniture, and household items at deep discounts. The interface is in Japanese but navigable with translation tools.
Government & Official Services
12. My Number Portal (マイナポータル) (Free)
If you have a My Number Card, this app provides access to government services including tax filing, benefit applications, and certificate issuance. Gradually expanding functionality.
13. Nenkin Net (ねんきんネット) (Free / Web-based)
Check your pension payment records and estimated future benefits. Important for foreign residents who want to track pension contributions for refund or totalization agreements.
Emergency & Safety
14. Safety Tips (Free)
Official disaster alert app by Japan Tourism Agency. Provides earthquake early warnings, tsunami alerts, volcanic warnings, and weather alerts in English, Chinese, Korean, Vietnamese, and more. Strongly recommended for all residents.
15. NHK World (Free)
Japan's public broadcaster's English-language app. Provides news, weather, and most importantly, emergency information during disasters in English. Useful during typhoons and earthquakes.
Q: Do I need a Japanese phone number for all these apps?
LINE, PayPay, and Suica/PASMO generally require a Japanese phone number for registration. Google Translate, Google Maps, NAVITIME, and NHK World work without one. Safety Tips works without a phone number but benefits from location services.
Q: Can I use Apple Pay / Google Pay for transit in Japan?
Yes. You can add a Suica or PASMO card to Apple Pay (iPhone 8 or later) or Google Pay (varies by Android model). NFC typically need to be enabled, and your phone model needs to support Japanese transit IC cards — most recent global models do.
Q: Is cash still necessary in Japan?
Japan is increasingly cashless, but some smaller restaurants, temples/shrines, and rural establishments still only accept cash. Carrying ¥5,000-10,000 in cash as backup is generally a good practice.
Disclaimer: App availability, features, and requirements may change. Some apps may require a Japanese phone number or bank account. Please check each app's requirements on the App Store or Google Play.
