Taiwan runs on LINE — restaurants, tour guides, landlords and new friends will all ask for your LINE, not your phone number.
Before you fly
EasyCard (悠遊付 / EasyWallet)
NT$100 for the physical card (non-refundable) + whatever you load
The EasyCard is the single most useful object in Taiwan; the app shows your balance and history so you never get stuck at a gate.
Official MRT app with exit-by-exit guidance — picking the right exit is the difference between a 2-minute and a 15-minute walk.
Transit directions in Taiwan are unusually accurate here, including bus numbers and live arrival times.
Before you fly
YouBike 2.0
NT$10 per 30 min, but registered members get a NT$10 city subsidy per ride and single-ride users do not
NT$10–20 gets you across a district faster than the bus for short hops the MRT does not cover.
Uber
Free app; rides NT$150–400 typical in-city
Removes the language barrier from taxis entirely — the destination is already in the driver's app.
Before you fly
Klook
Free app; varies by booking
Where Taiwan attraction tickets, THSR discounts and day tours are actually cheapest, often with skip-the-queue entry.
T Express (THSR)
Free app; NT$1,490 Taipei–Kaohsiung standard
Taipei to Kaohsiung in 96 minutes, and the app holds your ticket as a QR code.
foodpanda
Free app; NT$29–59 delivery typical
Food delivery covers almost every Taiwanese city, and it works when jetlag hits at 2am.
Wise
Free account; ~0.4–0.6% conversion fee
Interbank exchange rates and a card that does not add a 3% foreign transaction fee to every purchase.
Before you fly
Airalo
From ~US$4.50 for 1GB / 7 days
Data the second you land, without hunting for a SIM counter with your bags in hand.
Before you fly
Physical tourist SIM (Chunghwa / Taiwan Mobile)
NT$300–1,000 depending on days, usually unlimited data
The only clean way to get a Taiwanese phone number, which several local apps require.
Camera translation of menus, signs and medicine boxes — the single highest-leverage app for a non-Chinese reader.
Before you fly
CWA Weather (Central Weather Administration)
Free
The official source for typhoon warnings and earthquake alerts — foreign weather apps lag it badly.
The widest Taiwanese hotel inventory, and offline access to your reservation details.
Before you fly