Twenty years ago, travelling across Asia meant paper maps, phrasebooks, and a lot of guesswork at counters. Today, a smartphone loaded with the right apps is arguably more valuable than the passport in your other pocket. The right navigation app can save you an hour of wandering in Shibuya. The right translation app can turn a hawker centre order from a guessing game into a conversation. The right payment app can mean the difference between a smooth transaction and being turned away because "cash only, no foreigner card." This guide walks through every category of app you actually need for travel across Singapore, Japan, Hong Kong, Thailand, Indonesia, China, and Korea in 2026 — what to download before you leave, what to download on arrival, and what locals use that tourists usually miss.
Getting Connected First: eSIMs Before Apps
None of the apps below work without data, and airport WiFi and roaming charges are both unreliable solutions. The smartest first step for any Asia trip is installing an eSIM before you fly, so your data is live the moment you land — no fumbling with physical SIM card kiosks, no queueing at arrival halls.
Navigation Apps by Country
Google Maps is the default worldwide, and it works well in Singapore, Hong Kong, Thailand, and Indonesia. But in several Asian markets it is not the local standard, and using it exclusively means missing better transit data, real-time crowding info, or more accurate walking routes.
Japan: Navitime and Japan Transit Planner
Google Maps handles Japan reasonably well for walking and general orientation, but for train and subway navigation — including exact platform numbers, car numbers for optimal exit positioning, and IC card fare estimates — Navitime (or the English-friendly Japan Transit Planner by Jorudan) is more precise. Both apps account for the maze of overlapping private and JR lines in Tokyo and Osaka that Google sometimes simplifies incorrectly.
China: Baidu Maps and Amap (Gaode)
Google Maps is blocked in mainland China without a VPN, and even with one, its data for China is thin. Baidu Maps and Amap (高德地图, Gaode) are the two dominant apps, both now offering English-language interfaces good enough for tourists. Amap integrates with Didi (China's Uber-equivalent) for one-tap ride booking and is generally considered the more foreigner-friendly of the two.
South Korea: Naver Map and KakaoMap
Google Maps in Korea is famously limited — the government restricts detailed mapping data export, so walking directions and transit routing are unreliable. Naver Map and KakaoMap are the two apps every local uses, and both now have English toggles. KakaoMap is slightly better for taxi-hailing integration (via Kakao T), while Naver Map has marginally better restaurant and business search.
| Country | Best Navigation App | Why |
|---|---|---|
| Singapore | Google Maps / MyTransport.SG | Accurate transit + real-time bus arrival |
| Japan | Navitime / Japan Transit Planner | Platform-level train accuracy |
| Hong Kong | Google Maps / Citymapper | Excellent MTR + minibus routing |
| China | Amap (Gaode) / Baidu Maps | Google Maps blocked, thin data |
| South Korea | Naver Map / KakaoMap | Google Maps data restricted by law |
| Thailand | Google Maps | Reliable, works well with Grab |
| Indonesia | Google Maps / Gojek in-app map | Good coverage, integrates with ride apps |
Translation Apps That Actually Work
Translation apps have improved enormously, but not all are equal in every language.
- Google Translate — The universal default. Its camera translation feature (point your phone at a menu or sign and see translated text overlaid in real time) is genuinely useful across every country in this guide. Download the offline language packs before you leave in case of patchy data.
- Papago (Naver) — Built specifically for Korean, and noticeably more accurate than Google Translate for Korean-English, especially with menus and casual speech.
- Pleco — The gold standard for Chinese. Its dictionary depth, handwriting input for characters you can't type, and OCR camera scan make it far more useful than Google Translate for anything beyond basic phrases in China and Hong Kong.
- VoiceTra / iTranslate — Useful backups for Japan when speaking rather than reading, particularly in restaurants where staff will happily speak into your phone.
Booking Apps: Hotels, Transport, and Activities
For attractions, tours, and skip-the-line tickets across the region, the HolidaySG app centralises bookings for Singapore and neighbouring destinations so you are not juggling five different vendor apps and five different confirmation emails. For everything else:
- Agoda — Strongest hotel inventory and pricing specifically in Asia, often beating global booking sites on local properties.
- Grab — Ride-hailing, food delivery, and increasingly hotel and flight booking across Singapore, Malaysia, Thailand, Indonesia, Vietnam, and the Philippines.
- 12Go — The best app for booking trains, buses, and ferries across Southeast Asia, including routes that are hard to book any other way, like overnight sleeper trains in Thailand or ferry transfers between Thai islands.
- Trip.com — Strong for flights within Asia and China-specific train tickets (including China's high-speed rail network, which is otherwise hard for foreigners to book directly).
Payment Apps: The Region's Digital Wallet Maze
Cash is far from dead in Asia, but digital payments dominate day-to-day transactions in several markets, and knowing which wallet works where saves real friction.
China: WeChat Pay and Alipay
China has moved so far toward QR code payments that many small vendors genuinely do not carry change for cash. Both WeChat Pay and Alipay now offer "tourist" versions that link to an international Visa or Mastercard without needing a Chinese bank account — set this up before you arrive, because in-person registration can be a frustrating process with limited English support.
Southeast Asia: GrabPay
GrabPay works across Singapore, Malaysia, Thailand, Indonesia, Vietnam, and the Philippines, and is accepted at an enormous range of merchants beyond just Grab rides — convenience stores, cafes, and even some hawker stalls.
Singapore and Thailand: PayNow / PromptPay QR
Singapore's PayNow and Thailand's PromptPay QR systems are bank-linked and extremely fast for locals, but as a tourist you generally can't register for these without a local bank account — they are mostly relevant if a Singaporean or Thai friend is splitting a bill with you.
For everything else, a low-fee travel card (Wise, Revolut, YouTrip) loaded before departure gets you Visa or Mastercard acceptance at the vast majority of hotels, restaurants, and larger retailers across the region, with far better exchange rates than airport currency counters.
Messaging Apps by Country
| Country | Dominant Messaging App | Notes |
|---|---|---|
| Japan | LINE | Near-universal; many businesses only take LINE contact |
| South Korea | KakaoTalk | Essential for booking, delivery, and social contact |
| China | Also the payment and social super-app; near mandatory | |
| Singapore, HK, Thailand, Indonesia | Standard for tour operators, drivers, and hotels |
Food Discovery Apps
Google reviews are a decent baseline everywhere, but local food apps surface far better recommendations because they're built for local review culture, not tourist ratings.
- Burpple (Singapore) — Curated, visually-driven food discovery that locals actually use, far less cluttered than generic review platforms.
- OpenRice (Hong Kong) — The dominant local restaurant review platform; more reliable than Google reviews for Cantonese cuisine specifically.
- Tabelog (Japan) — Japan's most trusted review site; a Tabelog score above 3.5 is genuinely a strong signal, unlike inflated star ratings elsewhere.
- Wongnai (Thailand) — Thailand's answer to Yelp, with far deeper local street food coverage than Google Maps.
Ride-Hailing and Local Transport Apps
Grab dominates Southeast Asia, but it isn't the only option, and having a backup matters during surge pricing or peak-hour shortages.
- Grab — Singapore, Malaysia, Thailand, Indonesia, Vietnam, Philippines.
- Gojek — Strong Indonesia-specific alternative, particularly for motorbike taxis (ojek) in Jakarta and Bali traffic.
- Bolt — A useful backup in several Southeast Asian cities, often cheaper during Grab surge pricing.
- InDrive — Negotiation-based ride app gaining traction in Indonesia and parts of the region; you set your offer price.
- Didi — China's dominant ride-hailing app, integrated with Amap.
- Kakao T — South Korea's standard taxi-hailing app.
VPN Apps: Essential for China
If your itinerary includes mainland China, a VPN is not optional if you want access to Google services, WhatsApp, Instagram, or most Western news and social apps. Install and test your VPN app before you land — VPN provider websites and app stores are themselves often inaccessible from within China, so you cannot download or troubleshoot once you're there. Popular reliable choices among frequent China travellers include ExpressVPN and Astrill, though effectiveness varies and changes over time with government filtering updates.
Currency Converters and Offline Maps
XE Currency and Wise's in-app converter are both reliable for quick mental-math checks when haggling or comparing prices. For offline navigation, download Google Maps' offline area feature (or Maps.me as a lightweight alternative) for any city where you expect patchy connectivity, such as rural parts of Cambodia, Laos, or Indonesia's outer islands.
The Complete Must-Have App Stack
| Category | Universal Pick | Country-Specific Add-On |
|---|---|---|
| Connectivity | eSIM app (Airalo, or carrier-specific) | Buy destination eSIM before departure |
| Navigation | Google Maps | Navitime (Japan), Amap (China), Naver Map (Korea) |
| Translation | Google Translate | Pleco (China), Papago (Korea) |
| Booking | HolidaySG app, Agoda | 12Go for regional trains/buses/ferries |
| Payment | Wise / Revolut travel card | WeChat Pay & Alipay tourist mode (China), GrabPay (SEA) |
| Messaging | LINE (Japan), KakaoTalk (Korea), WeChat (China) | |
| Ride-hailing | Grab | Didi (China), Kakao T (Korea), Gojek (Indonesia) |
| Food | Google Maps reviews | Tabelog (Japan), Wongnai (Thailand), OpenRice (HK) |
Building Your Pre-Trip Checklist
The week before you fly, run through this sequence: buy and configure your destination eSIM, download offline map areas for your main cities, install the country-specific navigation and translation apps above, register for tourist-mode digital wallets if heading to China, and load your HolidaySG bookings so confirmations are all in one place. Doing this before departure — not scrambling at the airport — is what separates a smooth first day from a jet-lagged scramble trying to find WiFi to download apps you should already have.
Technology changes fast, and app dominance shifts year to year — what mattered in 2020 is different from what matters now, and will likely shift again by 2028. The constant, though, is that the traveller who arrives prepared with the right local apps rather than relying solely on what works at home will always move faster, pay fairer prices, and get more out of every single day on the ground.
