ZipZatDae: Korea Rent Deposit

Measure your home's price like you would with a ruler.

ZipZatDae ("home ruler") is a measuring tool for apartment prices, the jeonse ratio and deposit safety in Korea, built only on the actual transaction data published by Korea's Ministry of Land, Infrastructure and Transport (MOLIT).
It does not sell listings, does not carry third-party ads, and does not ask you to sign up.
Apartment prices and rankings cover all 25 districts of Seoul (MOLIT actual transactions for the latest 36 months); villas (row/multi-family houses) and officetels are available on the map and in complex lookup for Seoul, Busan, Gyeonggi, Chungnam and Gyeongbuk first, and are expanding nationwide.
This is a private app that processes data from the MOLIT Real Transaction Price Open System (https://rt.molit.go.kr). It is not an official government app.

■ Deposit safety check
Renting in Korea often means a large lump-sum deposit (jeonse). Enter the deposit you are about to pay and any senior debts on the home, and the app compares them with transaction-based prices to show an adequacy grade and a safety grade (A–D). The result fills up a tape-measure style "ruler gauge" at a glance. It also suggests special clauses you can add to the contract.

■ Actual transaction prices
Sale and rent transactions by complex, a price band with a scatter chart of actual deals, prices and jeonse ratio by floor area, and complex details such as year built. Only reported actual transactions are used — never asking prices. Every screen shows the reference month and the source.

■ Map
See price per pyeong, sale and jeonse prices on the map for complexes with location data (currently a subset). Filter by deal type, price, floor area and year built.

■ Rankings
Rank cities, districts and complexes by jeonse ratio, price per pyeong, change rate, trade volume and more. Choose the period and sort order.

■ Compare regions · Find by budget
Compare price per pyeong and jeonse ratio for up to 3 regions on monthly or yearly charts. Enter your budget to find complexes you can afford.

■ Share
Share complex prices and check results as text.

■ Favorites · Recently viewed
Favorites and recently viewed complexes are stored only on your device. No account, no server storage.

Principles
· No third-party ads — no presale promotions, products or ad networks. The app only introduces other apps made by the same developer (a card when you reopen the app, and in Settings).
· No listings — free from asking prices and fake listings.
· No sign-up — use it right away without logging in. Location permission is requested only when you tap "My location" on the map, and everything else works if you decline.
· No predictions — it does not forecast future prices; it only shows reported numbers.

Data sources and notices
· Transaction information in this app is processed from public data provided by the MOLIT Real Transaction Price Open System (https://rt.molit.go.kr) and the Korea Public Data Portal (https://www.data.go.kr).
· Prices, jeonse ratios and grades are reference indicators calculated from transaction statistics. They are not appraisals, bank valuations or legally binding documents. Before any contract, loan or investment decision, always verify with official sources such as the certified copy of the property register and the HUG Safe Jeonse app.
· ZipZatDae is not an official app of any government or public institution and is not affiliated with MOLIT or HUG.
· Recent deals may be missing because of reporting delays and corrections. Check the reference month on each screen.
· Without a network connection the app runs on the transaction data bundled with it. The latest reports may be missing, so check the reference month on each screen.
· The app is available in 12 languages (change it anytime in Settings). Complex and district names are shown in Korean.

Contact: [email protected]