レートハント｜アジア旅行の両替所ガイド・地図

RateHunt is a currency exchange guide for Asian travel.

It compares the estimated exchange fees at airports, city exchange offices, and banks, and allows you to find exchange offices on a map.

When exchanging currency overseas, the fees charged vary greatly depending on "where you exchange it."

We help you choose the right place in Japanese.

■ Supported 8 Cities

・Seoul (South Korea)

・Busan (South Korea)

・Taipei (Taiwan)

・Bangkok (Thailand)

・Hanoi (Vietnam)

・Ho Chi Minh City (Vietnam)

・Manila (Philippines)

・Cebu (Philippines)

Switching cities from the upper right corner of the screen will refresh the estimated fees, shops, and important points.

■ Sorting Exchange Locations by Estimated Fees

The service displays exchange locations such as "City Exchange Offices," "Airport Exchange Offices," "Banks," and "Hotel Exchanges" in descending order of estimated fees. The length of the bars also shows the difference.

The categories vary by city. For example, the two Philippine cities do not have a "bank" category.

We couldn't confirm which branches handle Japanese yen cash, so we didn't create a category for it.

Conversely, in Taipei, banks appear as the most advantageous option, ranking first.

The two Korean cities have a "automatic currency exchange machine" category. This is because it can be used as an option when both exchange offices and banks are closed.

You can also check today's base rate in the format "approximately how many baht/dons/pesos for 10,000 yen."

■ "Airports aren't always a bad deal"

The best option varies by city.

・Bangkok… The counters in the arrival lobby are unfavorable. It's best to wait until you reach a specialty shop in the city.
・Ho Chi Minh City… The difference between airport bank booths and the city is minimal. It's fine to exchange before leaving the airport.
・Hanoi… There's a big difference between the counters lined up. Compare before exchanging.
・Manila… The difference with the city is small. However, exchange your money within the terminal where you arrive.
* Cebu: The rates are considerably better at malls in the city. Only exchange a small amount at the airport.
* Taipei: The rates are the same at both the airport and the city. It's best to exchange a large amount at once.
* Seoul: The difference between the airport and the city is the largest among the 8 cities. Exchange a small amount for immediate use, then exchange the rest at a shopping area like Myeongdong.
* Busan: You can exchange money at the airport, but not at a bank inside the building; use a shop at the station across the pedestrian crossing.

For each airport, we've included directions after arrival, counter opening hours, and actual rate differences.

■ Things to be careful of in each city

* Bangkok: There are three currency exchange chains with very similar names but belonging to different companies. Distinguish them by the color of their signs.
* Two cities in Vietnam: From February 2026, customers who exchange money at unlicensed shops will also be penalized (fines and confiscation of foreign currency depending on the amount). Here's how to check the posted rates:
* Two cities in the Philippines… We'll explain that exchange rates can vary significantly from counter to counter even within the same mall, and that you should always count the banknotes you receive on the spot.
* Taipei… We'll explain that there are no street-side currency exchange shops, that bank rates are the same nationwide, and that bank counters are open until 3:30 PM on weekdays.
* Two cities in South Korea… We'll explain that the exchange rate charts in stores are in the format "100 yen = XX won," which is the opposite of how it's read in Japan, and that you need your original passport to exchange money.

■ You can check nearby currency exchange offices on a map.

Currency exchange offices in the city and at the airport are displayed on a map and in a list.

The pins are color-coded and shaped to distinguish them by type, making them easy to identify at a glance.

Tapping on a store will take you to its official website, Google Maps, directions, or phone number.

■ Usable even without a signal

The store's location, name, business hours, and estimated fees are included in the app.

You can use it even if you don't have a SIM card overseas or if the connection is unstable. (Today's base rate, map display, and links to external sites require an internet connection.
The rate is saved once retrieved, and will be used if an internet connection is unavailable.)

■ Location information is not required.

Location information is not requested simply by launching the app.

It is only requested when you press "Sort by proximity to current location."

Even without permission, you can sort by distance from the city center.

■ No in-app purchases

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【Notes on Use】

・The displayed percentage of the fee is an "estimate" for each type of shop.

・Actual rates for each shop are not included. All shops of the same type are treated the same.

・The estimate is determined by researching the actual rate of shops in that city and comparing it to the base rate for the same day.

The date the figures were researched is displayed within the app.

・Categories where actual rates could not be verified are displayed as "estimated."

Actual figures for hotel currency exchange have not been verified for all cities where that category exists.

・The base rate is the interbank transaction rate, before deducting the shop's commission. There are no shops that will exchange currency at this exact rate.

* This rate may differ from the actual market rate. Please be sure to check the official website or in person at each shop before exchanging currency.

* This app does not verify whether shops have the necessary operating licenses.

In some countries, such as Vietnam, exchanging currency at unlicensed shops can result in fines and confiscation of the user's currency.

Please be sure to check the signs posted at the shops yourself.

* Shop information is based on OpenStreetMap data. Because this map is created by volunteers,
the closure, relocation, and type of shop may not be accurate.

* Some shops are not registered. Even if a shop is not displayed nearby, it may actually exist.

* The pin locations on the map are from OpenStreetMap and may be off by several meters to tens of meters compared to other map apps.

* This app does not provide investment or asset management advice.

* Advertisements are displayed at the bottom of the screen. This is to help us continue providing the app for free.

[Data Source]
* Store Information: OpenStreetMap (© OpenStreetMap contributors, ODbL)
* Map: MapTiler
* Base Rate: ExchangeRate-API

[Supported Cities]
* Seoul (South Korea)
* Busan (South Korea)
* Taipei (Taiwan)
* Bangkok (Thailand)
* Hanoi (Vietnam)
* Ho Chi Minh City (Vietnam)
* Manila (Philippines)
* Cebu (Philippines)