Built for driving in Japan

MapCodes for any place in Japan.

Type a place name. Mappu returns the MapCode you can punch straight into your car's nav system — no more wrestling with long Japanese addresses.

Free download · iPhone & iPad · Works across Japan
The problem

Japanese addresses weren't built for car navs.

Block-and-lot addressing, kanji input, and tiny dashboard keyboards make destination entry painfully slow. MapCodes were designed exactly for this — Mappu just makes them easy to find.

Without Mappu

〒105-0011 東京都港区芝公園4丁目2−8
Hunt for kanji. Switch input modes. Hope your nav recognizes the building name. Try again.

With Mappu

554 595*65
A short numeric code. Type it on the nav's number pad and you're routed in seconds.
How it works

From place name to car nav in three taps.

1

Search a place

Type a landmark, restaurant, station, hotel — in English, romaji, or Japanese. Mappu finds it.

2

Get the MapCode

Mappu returns the precise MapCode for that location, plus a phone number you can call to confirm.

3

Drive there

Enter the code on your car's MapCode screen — every major Japanese nav supports it. Done.

See it in action

Everything you need, right in your pocket.

Features

Small app. Big trip-saver.

Smart place search

Search any spot in Japan in English, romaji, or Japanese — restaurants, hotels, stations, attractions.

Drop a pin anywhere

Long-press any spot on the map — a beach, a trailhead, a friend's house — and Mappu gives you its MapCode instantly.

Tap any map landmark

Tap hotels, restaurants, temples, and hundreds of other points of interest directly on the map — Mappu instantly shows the MapCode for whatever you touch.

Save favorites

Save the spots you keep returning to — your hotel, a favorite onsen, that ramen place — and reach them in two taps.

Phone-call shortcut

For restaurants and hotels with a listed number, dial straight from the result to confirm a reservation.

Light & dark mode

Tuned for both — readable in bright daylight and easy on the eyes during night drives.

Syncs across your devices

Save a spot on your iPhone and it appears on your iPad automatically. Mappu keeps your favorites in sync across all your Apple devices via iCloud.

3D and satellite views

Switch to satellite or hybrid view to scout terrain before you arrive, or tilt into 3D mode for a bird's-eye perspective of your destination.

Recent searches

Mappu remembers your last 30 searches so you can pull up that ryokan or restaurant again without typing a single character.

What is a MapCode?

A short number that pins any spot in Japan.

The MapCode system was developed by Denso and is supported by virtually every car navigation system sold in Japan — Toyota, Honda, Nissan, Mazda, and the big rental fleets all read it.

Each code is a short number — usually 6 to 10 digits — with an optional 1–2 digit precision suffix after a *. Type it into the "MapCode" entry screen and the nav drops a pin within meters of where you want to go.

554 595*65
554 595Region & block *65High-precision suffix
FAQ

Good to know.

Will every Japanese car nav accept a MapCode?

Almost all of them — the MapCode system is the de-facto standard in Japan. If your rental car has a Japanese nav screen, look for the マップコード or "MapCode" entry option. If your car was made for the export market it may not have it; in that case you can revert back to the phone number Mappu shows for the location, which most Japanese navs accept as a destination.

How accurate are the codes?

The high-precision codes (the digits after the *) place you within roughly 3 meters of the destination — typically the front entrance for a venue.

Do I need an internet connection?

Yes, for searching new places. Once you've saved a place as a favorite its MapCode is saved on the device, so you can pull it up offline.

How do I get the best search results for a specific destination?

Search autocomplete works best when the map is already centered near your destination. There are two easy ways to do this. First, you can pan and zoom the map to the area you're looking for, then search — autocomplete will prioritize nearby results. Alternatively, type the name of the city (for example, "Kyoto" or "Sapporo"), tap it in the results to let the map zoom in to that city center, and then search for your specific destination — autocomplete will find it much more reliably within that focused area.

Is Mappu free?

Yes, the app is free to download. It's supported by unobtrusive ads, which keep the lights on without selling your data.

Mappu app icon

Drive easier on your next trip to Japan.

Download Mappu free and turn your next destination into a number you can type in seconds.