JUDOU

JUDOU lets you see, on a map, which homes you can afford with your income and where.

Using open data from Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) "Real Estate Library", JUDOU shows actual real-estate transaction prices on the map. Enter your annual income and a simple loan estimate computes your maximum purchase price, then colors each home as affordable (blue), over budget (pink), or no price data (purple). Over-budget homes still show in pink so you can read the local market while you explore.

Tap a home for details: price, floor area, price per square meter, layout, year built, structure, location, and transaction period, plus the estimated monthly repayment under your current loan assumptions.

Key features:
- Real-estate transaction prices around you on a map (nearby homes are grouped with their average price; tap a group for a list sorted by price)
- Estimates your maximum budget from your income (spouse's income optional), own funds, existing loan payments, interest rate and term, and colors homes you can and cannot afford
- Home details with the estimated monthly repayment
- Price heatmap: each area's average price in color bands (blue = affordable to red = expensive), with a legend
- Filter by price, floor area, building age and layout
- Save favorites and compare 2 to 3 homes side by side
- Search by station, place name or address
- Today's featured area and a recommended home within your budget
- Covers the latest 8 quarters of transactions; new quarters appear automatically once published
- Japanese and English (amounts in thousands of yen in English)

Your income, favorites and filters are stored only on your device. No account is required.

Data source (official site): MLIT Real Estate Library
https://www.reinfolib.mlit.go.jp/
Prices reflect past transactions, not homes currently for sale or asking prices. The loan estimate is approximate and does not guarantee actual loan terms or eligibility.

Disclaimer: JUDOU is an unofficial app developed and provided by Fuji Bit Inc. It is not affiliated with, endorsed by, or representing the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) or any other government agency.

Pricing: JUDOU is free. There are no in-app purchases and no subscriptions. Ads are shown in the app to support its operation.