Essential Apps for Thailand

Verified 13 August 202617 min read14 sections

Thailand runs on a handful of apps, and Chiang Mai is no exception. Within your first week you'll want to move money by QR code, hail a car from your phone, order dinner to your condo door, message your landlord, and keep an eye on the air. Almost none of that happens the way it does back home — cash is fading fast, nobody uses email, and "just text me" means LINE, not WhatsApp. This page is a first-week checklist: what to install, what each one is actually for, and the gotchas that trip up new arrivals.

A note before you start: several of these apps (bank apps, PromptPay, the government ThaID identity app) only fully work once you have a Thai phone number, a Thai bank account, or both. Don't be surprised if you can install something on day one but can't finish setup until you've sorted your SIM and your bank — see Internet, SIM Cards & Coworking and Money & Banking. Install what you can now; circle back to the rest.

Before you fly: the arrival card (TDAC) — a website, not an app#

This is the one thing to sort before you board, and it catches out almost every new arrival because people assume there's an app for it — there isn't. Since the old paper TM6 card was scrapped, every non-Thai entering the country (tourists, visa-exempt travellers, DTV and long-stay holders, and returning expats alike) must fill in the Thailand Digital Arrival Card (TDAC) online before arrival, whether coming by air, land or sea.

The critical details, re-verified July 2026:

The official channel is the government website tdac.immigration.go.th, and — new since the app's mid-2026 pilot — you can now also submit the arrival card inside the official THIM app (see Government & immigration below). There is still no charge either way. Any other site or app charging a "TDAC fee" is a scam — the official submission is free.
Free submission opens within 3 days before your arrival date (including arrival day itself). A recent wrinkle: some official-adjacent channels now let you submit earlier than the 3-day window for a small convenience fee (around US$8); you never need to pay this — just wait until you're inside the free 72-hour window. Set a phone reminder for a few days before you fly.
You'll enter passport details (you can scan the passport's machine-readable strip to autofill), your flight and your first night's accommodation, and answer a short health-status question. Fill everything in English.
After submitting you get an on-screen confirmation and a PDF with a QR code emailed within minutes. Save it offline and screenshot it — immigration may ask to see it on arrival, and airport WiFi is not something to rely on.

Because it's a website (or now the THIM app), just bookmark it; don't go hunting for a standalone "TDAC app" in the store, where the results are mostly imposters.

Arriving at Chiang Mai airport: e-Gates and your QR code#

New for 2026 and worth knowing before you land: Chiang Mai International (CNX) — along with Suvarnabhumi, Don Mueang, Phuket and Hat Yai — now has ABC (Automated Border Control) e-Gates open to most foreign passport holders, not just Thais. This is a real time-saver during busy arrivals, but it depends on your phone and paperwork being ready, so it's an "apps" issue as much as an immigration one:

The flow at the gate is: scan your passport → facial-recognition camera → scan your TDAC QR code when prompted → walk through. Have the TDAC QR saved offline on your phone (or printed) before you join the queue — fumbling for airport WiFi at the gate is exactly what slows people down.
e-Gates need a biometric (e-passport) and are not open to every nationality; if the gate rejects you on a data mismatch it simply routes you to a manual counter — this is not a penalty, just human verification. First-time long-stay arrivals and anyone with an unusual visa status may well be sent to the manual desk anyway.
The terminal keeps both e-Gates and staffed counters, and the same TDAC QR works at either — there's no separate process for a regional airport like CNX.

Practical upshot: the two things that make arrival smooth are a charged phone and the TDAC QR saved offline. Sort those on the plane.

The absolute essentials (install before you land, if you can)#

LINE — This is the one non-negotiable app. LINE is Thailand's default messenger the way WhatsApp is in Europe or iMessage in the US: your landlord, your kids' school, your condo's admin, your Muay Thai gym, the guy who fixes your scooter, and half the businesses in town all communicate and take bookings through it. Many shops list a LINE ID instead of a phone number, and appointments (hairdressers, clinics, restaurants) are routinely confirmed by LINE message. Set it up early and get comfortable with it. It also has a built-in wallet and a translation feature, though most people use it purely for chat.

Grab — The Uber of Southeast Asia and your everyday way to get around Chiang Mai. One app covers private cars (GrabCar), motorbike taxis (GrabBike), food delivery (GrabFood), and parcel/errand runs (GrabExpress). It works citywide with the widest driver network in Chiang Mai, shows the fare up front, and takes card or cash. Cross-ref Getting Around for how it stacks up against songthaews and owning a scooter.

Bolt — Grab's main ride-hailing rival, and worth having as a second app. In Chiang Mai, Bolt is usually 5–15% cheaper than Grab for the same trip (re-checked mid-2026) and can be quicker to find a car in the central areas. The catch is a thinner driver pool: waits run around 5–15 minutes versus Grab's 3–10, and during peak hours, heavy rain, or out in the suburbs Bolt may not find you a car when Grab still can. Many drivers actually run both apps at once. The standard local strategy is to install both, check Bolt first for price, and fall back to Grab for coverage and for airport runs or late nights. (InDrive, where you name your own fare, is a distant third option some people keep for haggling.)

Google Maps — Works well across Chiang Mai for driving, walking, and finding businesses, and most places list their correct pin, hours, and phone/LINE here. It's also how you'll share your location with a Grab driver or a friend. Download the offline map of Chiang Mai province for when you're up a mountain with no signal.

Google Translate — Install it and download the offline Thai language pack. The camera mode (point it at a menu, a bill, a medicine label, or a government form) is the single most useful feature for daily life. Thai has no spaces between words and a non-Latin script, so this earns its place on your home screen.

Money & payments#

Thailand is now largely a QR-code economy. PromptPay — the government-backed instant-transfer system — is accepted almost everywhere, from malls down to street-food carts and market stalls, and it's how you'll pay rent, split bills, and settle up with almost anyone. PromptPay isn't a standalone app; it lives inside your Thai bank's app, linked to your phone number or ID. So the real task here is getting your bank app running.

Your Thai bank's app — Whichever bank you open with, its app is essential: K PLUS (Kasikorn Bank), SCB Easy (Siam Commercial Bank), Bangkok Bank Mobile Banking, or Krungthai NEXT (Krungthai) are the common ones. You scan to pay, transfer by PromptPay, top up your phone, and pay utilities all from here. Note you generally need to open the account in person first — see Money & Banking.
Wise and/or Revolut — The standard way to move money into Thailand from abroad at close to the real exchange rate, far cheaper than a bank wire. Set one up before you arrive to fund your first weeks and, later, to top up your Thai account.
A foreigner-friendly QR wallet (optional stopgap) — If you haven't got a Thai bank account yet, apps like TAGTHAi Easy Pay (built with Kasikorn) let you top up with a foreign card and pay by PromptPay QR like a local. Handy for the gap between landing and getting your bank sorted.

A realistic sequence: land with Wise/Revolut funded → use cash and your foreign card at first → open a Thai bank account → install its app and start living on PromptPay. Rough budget context is in Cost of Living.

Utility & bill-payment apps#

Once you've settled somewhere (cross-ref Setting Up Home for how the utilities themselves get connected), these are the apps that actually get your electricity and water paid without a monthly trip to a 7-Eleven counter:

PEA Smart Plus — The official app of the Provincial Electricity Authority, the utility that supplies most of Chiang Mai (outside a small municipal-grid pocket). It shows your usage history and current bill, generates a QR/barcode you can scan to pay at any bank app, ATM or convenience-store counter, sends an SMS/push reminder before the due date, and lets you report an outage. Genuinely useful, though re-verified user reviews in 2026 still describe it as sluggish and occasionally freezing — if it won't cooperate, your Thai bank app's own bill-pay/PromptPay-biller function usually lists PEA as a payee and works just as well.
PWA Plus Life — The equivalent app from the Provincial Waterworks Authority for water bills: view usage, pay via QR, request a new meter connection, or report a leak. As with electricity, paying water through your bank app's biller list works just as well if you'd rather skip a second app.
Your building's own LINE group or app — If you're in a condo or managed moobaan, the common-area/juristic-person fee (and sometimes a building-marked-up electricity or water bill — see the utilities note in Setting Up Home) is usually invoiced and paid through a LINE Official Account or a simple in-house app rather than PEA/PWA directly. Ask your landlord or the front desk on move-in day which channel they actually use.

Parcel tracking apps#

With Lazada, Shopee and the wider online-shopping habit come parcels — and Chiang Mai is served by several courier networks that don't share one tracking system, so it's worth having the right app rather than hunting a tracking number through a browser each time:

Kerry Express — One of the longest-established couriers here, with its own app for tracking, scheduling a pickup, and finding your nearest drop-off/collection point (handy if you miss a delivery and don't want to wait for a redelivery attempt).
Flash Express and J&T Express — The other two big players you'll see constantly on Lazada/Shopee shipping labels; both have their own tracking apps, and J&T in particular leans on a network of self-service parcel lockers around the city for missed-delivery pickup.
Thailand Post — Still the default for anything sent from abroad via standard post, with its own tracking app/site for EMS and registered mail.
A universal option — If you'd rather not install four separate apps, a multi-carrier tracker (ParcelsApp, Parcel Monitor, 17TRACK) will take almost any Thai tracking number — Kerry, Flash, J&T, Thailand Post and more — and show status in one place. Handy once you're regularly juggling parcels from several couriers at once. Full detail on receiving, forwarding and customs lives in Shipping, Post & Couriers.

Food, groceries & delivery#

GrabFood (inside Grab) and LINE MAN are the two food-delivery apps that matter in Chiang Mai. Since Foodpanda exited the Thai market in May 2025, these two, along with the occasional restaurant's own LINE ordering, are what's left — so don't waste time looking for Foodpanda; it's gone. LINE MAN often lists smaller local and street-food vendors that aren't on Grab, so many people keep both and compare.

For online shopping and groceries:

Lazada and Shopee — Thailand's Amazon-equivalents, and genuinely how people buy everything from phone chargers to furniture. Expect low prices, cash-on-delivery options, and delivery even to condos. Cross-ref the Shipping, Post & Couriers section for how parcels actually reach you.
Grab (GrabMart) and LINE MAN also do supermarket and convenience-store runs if you'd rather not go out. Rimping, Tops, and Makro appear in these for grocery delivery — see Food & Groceries.

Air quality (matters more here than almost anywhere)#

Chiang Mai sits in a mountain basin, and from roughly February to April — "burning season" — smoke from agricultural and forest fires can push PM2.5 to genuinely hazardous levels. In 2026 the city again topped IQAir's global pollution ranking, hitting an AQI around 263 on the worst late-March days. During those weeks the daily air-quality reading dictates whether you exercise outdoors, mask up, or run the air purifier — so an AQI app isn't optional here.

IQAir AirVisual — The most-used option, with real-time PM2.5, forecasts, and Chiang Mai-specific station data.
AQICN / World Air Quality Index — A solid free alternative pulling from many local monitoring stations.

Check one every morning during burning season. Cross-ref Health & Fitness (outdoor training and burning-season adjustments) and Emergency Numbers & Safety (masks, purifiers, and hazard basics).

Phone & connectivity#

An eSIM app (for the gap before you buy a local SIM) — If your phone supports eSIM, installing a travel-eSIM app before you land means you have working data the moment you switch your phone on at the airport, before you've found a carrier shop. Airalo is the best-known (its Thailand plans run on the AIS/True networks — roughly $10 for 10GB), with Holafly, Trip.com and Saily as competitive alternatives. These are a stopgap, not a permanent plan: for anything beyond a couple of weeks a proper local prepaid or postpaid SIM is far cheaper and gives you a Thai number (which you'll need for bank apps and PromptPay). See Internet, SIM Cards & Coworking for the local-SIM decision.
Your mobile carrier's app — AIS (myAIS), TrueMove H (TrueID / iService), or the True–dtac apps for topping up data, checking your balance, and managing your plan. Which one depends on the SIM you buy; see Internet, SIM Cards & Coworking.
WhatsApp — Not used much within Thailand (that's LINE's turf), but keep it for staying in touch with family and contacts back home.

Government & immigration#

THIM (Thailand Immigration Management System) — The Immigration Bureau's new web-and-mobile "super app," built with AWS (hosted in-country, in AWS's Bangkok region, to satisfy Thai data-residency rules) and Digital Identity Co., to move immigration paperwork online and cut airport queues. It began as a voluntary pilot in May 2026, letting you submit your TDAC arrival card through the app instead of the website, in English, Russian, Japanese and Chinese (more languages promised). Update, re-verified mid-July 2026: this is no longer just a pilot on a distant timeline — the Immigration Bureau has now set a mandatory nationwide rollout for August 2026, at which point using THIM (or its TDAC function) for arrival processing becomes the standard, not optional, route at Thai entry points. The parts long-stayers actually care about — online 90-day reporting, queue booking, appointment scheduling at local immigration branches, and visa extensions via e-Extension — remain Phase 2, still targeted for around October 2026, and have not gone live yet as of this update. Practical upshot: expect THIM to become unavoidable for arrivals within weeks, but keep doing 90-day reports and extensions the established way (in person or the existing online portal) until Phase 2 is confirmed live — announced and delivered still run on different clocks here.
90-day reporting (online) — If you're on a long-stay visa you must report your address every 90 days. Until THIM's version is live, this is done through the Immigration Bureau's 90-day online portal (the website, not an app), which you can use from 15 days before the due date. Note the common catch: the first report after an arrival or extension usually has to be done in person at Chiang Mai Immigration, and only subsequent ones can go online. Full detail lives in Visas & Visa Agents.
ThaID — Thailand's official digital-identity app, increasingly used to verify your identity for government and some financial services. Foreigners can register a limited profile, though full functionality is built around Thai ID cards; install it when a specific service asks for it rather than stressing about it on day one.

Safety & anti-scam apps (more relevant here than you'd expect)#

Phone and online scams are a genuinely large problem in Thailand — the Whoscall Report 2025 put total national losses above ฿115 billion, with a majority of surveyed Thais exposed to a scam attempt. As a foreigner you'll get a steady trickle of spam calls and SMS (fake parcel-delivery notices, "your bank account is frozen," fake-police and fake-immigration calls). A couple of apps take the edge off:

Whoscall — A free caller-ID and spam-blocking app widely used across Thailand and headquartered partly here. It flags unknown numbers as likely scam/spam before you pick up, blocks known bad numbers, and can scan suspicious links and SMS. The single most useful defensive app to install early.
DE-Fence — A government-built app (from the Digital Economy and Society Ministry) positioned as the free, ad-free local alternative to Whoscall. Its edge is deeper integration with Thai law enforcement: its scam-number database is compiled directly from the Anti-Online Scam Operation Centre (AOC), the Royal Thai Police, the Cyber Crime Investigation Bureau and the Anti-Money Laundering Office, rather than Whoscall's broader but more generic global crowdsourced list. If you're actually deceived into transferring money, DE-Fence's one-tap dial to the AOC hotline, 1441, can pass your report straight to police for a faster attempt at freezing the receiving account. A reasonable free complement to Whoscall rather than a replacement — many people run both.

The golden rule no app replaces: real Thai police, banks and immigration never ask for money or account details by phone, LINE or SMS. Anyone who does is a scammer — hang up and, if money's involved, call 1441. More on scams and safety in Emergency Numbers & Safety.

Fake apps and sideloading — the trap that empties bank accounts#

Worth its own warning, because this is the mechanism behind most large foreigner losses in Thailand: the biggest app-related danger here isn't the legitimate apps above, it's being talked into installing a fake or "helper" app that quietly hands a scammer remote control of your phone and your banking app. The pattern is consistent:

A caller poses as the police, customs, an immigration officer, a delivery company, or "the bank's security team," creates urgency ("your account is linked to money laundering / your parcel is held"), then walks you through installing an app to "verify your identity," "clear the case," or "receive a refund."
The app is an APK sideloaded from a link (a file sent over LINE or SMS, or a web page) — not from the official Apple App Store or Google Play. Once installed and granted accessibility permissions, it can read your screen, capture passwords and OTPs, and operate your banking app while your phone appears to just sit there.

How to stay safe, in plain rules:

Only ever install from the official App Store or Google Play. Never sideload an APK a "helper" sends you, no matter how official they sound. On Android, leave "install unknown apps" switched off.
No real agency makes you install an app to resolve a case over the phone. That request is, by itself, proof it's a scam.
Be suspicious when an app demands Accessibility or "control your device" permissions it has no reason to need. Banking, delivery and government apps do not need to read and control your whole screen.
If you think you've installed something bad: put the phone in airplane mode, call your bank on the number printed on your card (not any number the caller gave), and change your banking passwords from a different device. Then report to 1441.

Cross-ref Emergency Numbers & Safety for the wider scam picture and reporting channels.

Health apps#

You don't need these on day one, but they're good to have set up before you actually need a doctor:

Your chosen hospital's app / online booking — The big private hospitals let you book appointments and (increasingly) view results and pay online. Bangkok Hospital Chiang Mai, Chiang Mai Ram and Sriphat all have online appointment systems; set up the one for whichever hospital you settle on. See Doctors & Healthcare for how the hospitals compare.
Grab / Lila and pharmacy delivery — Many pharmacy and some prescription runs can come to you via Grab; note that certain medications need an in-person pharmacist or prescription and can't be delivered.
Your insurer's app — If you're on international or local health insurance (often mandatory on retirement and some other visas), install the insurer's app for your policy card, cashless-hospital list and claims. Cross-ref Cost of Living and Doctors & Healthcare.

Quick first-week checklist#

For skimmers, here's the priority order:

TDAC — fill the online arrival card (tdac.immigration.go.th, or via the THIM app) within 3 days before you fly; save the QR offline for the airport e-Gate. Free.
LINE — everyone's messenger and booking tool.
Grab + Bolt — getting around (install both).
Google Maps + Google Translate (with offline Thai pack).
An eSIM app (Airalo etc.) — data the moment you land, until you buy a local SIM.
Wise / Revolut — fund your move before you arrive.
Your Thai bank app — once the account is open; unlocks PromptPay.
GrabFood + LINE MAN — dinner sorted.
Lazada + Shopee — everything else delivered.
IQAir AirVisual — especially Feb–April.
Whoscall — spam-call and scam protection from week one.
Your carrier's app — once you have a SIM.
PEA Smart Plus / PWA Plus Life (or your bank's bill-pay list) — once you're paying your own electricity and water.
A parcel-tracking app (Kerry Express, Flash Express, J&T Express, or a multi-carrier tracker) — once the Lazada/Shopee orders start arriving.

Everything above is free to install. The friction is never the download — it's that the money and identity apps need a Thai number and a Thai bank account first, so treat those two errands (SIM and bank) as your real first-week priorities and let the apps fall into place behind them.