住まいナビ｜住宅ローン返済・金利ランキング・住まい比較

Riverplate Studio

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About this app

From choosing a home to planning your mortgage repayments, this app provides all the support you need!

Recommended for those considering buying, renting, or refinancing a home!

"Sumai Navi" is an app that supports you in finding the perfect home by providing mortgage repayment simulations, interest rate rankings, and comparisons of the actual costs of detached houses, rentals, and condominiums.


🔎 Recommended for:

・Those undecided between buying a detached house or a condominium

・Those who want to compare whether renting or owning a home is better

・Those who want to know their monthly and total mortgage repayment amounts

・Those who want to compare mortgage interest rates to make a choice

・Those who want to simulate multiple loan conditions

・Those who want to compare housing costs numerically to make a decision


🏠 Comparing Detached Houses, Rentals, and Condominiums

When purchasing a home, in addition to mortgage repayments, there are taxes and maintenance fees. Even with rentals, there are costs such as renewal fees in addition to rent.


This app allows you to compare the actual costs of detached houses, rentals, and condominiums. You can consider whether buying or renting is right for you, taking into account not only monthly payments but also all other housing expenses.

💰 Mortgage Repayment Simulation
Set the loan amount, down payment, interest rate, repayment period, repayment method, bonus payments, etc., and simulate monthly and total repayment amounts. Compare different repayment patterns to create a manageable repayment plan.

📊 Mortgage Interest Rate Ranking
Interest rates are crucial when choosing a mortgage. Differences in interest rates affect monthly and total repayment amounts.

Supports five types of mortgages: variable interest rates and fixed interest rates of 10, 20, 35, and 50 years. Use the interest rate ranking to help you choose a mortgage.

*Interest rates and loan conditions vary depending on the financial institution, product, and screening results. Please check the official information of each financial institution for the latest applicable conditions.

📌 Saving Repayment Patterns
Mortgage repayment conditions aren't a one-time calculation.
You can save up to three different repayment patterns with varying loan amounts, interest rates, and repayment periods.

For example, saving scenarios with different interest rates or loan amounts allows you to compare conditions and make informed decisions.

🏡 Simulation of ongoing mortgage payments
By selecting a detached house or condominium, you can check the total repayment amount to date, future repayment schedule, and projected balance.

Compare housing costs numerically to help you choose the right home and plan your future finances.

Shift from intuitive home selection to numerical comparisons
Housing is one of the biggest expenses in life. It's important to consider not only the immediate rent or mortgage payments, but also the long-term burden.

Use "Housing Navi" to compare mortgage payments, interest rates, and the actual burden for each type of housing to help you choose the right home for yourself and your family.

*The simulation results in this app are estimates based on certain assumptions and do not guarantee actual costs or future expenses. Please check details with each financial institution and real estate company when purchasing a home or entering into a mortgage contract.

What’s new

住まいナビをリリースしました！

・一戸建て、賃貸、分譲マンションの実質負担額を比較
・住宅ローンの返済シミュレーションに対応
・変動金利、固定金利10年・20年・35年・50年の金利ランキングを掲載
・頭金、返済期間、返済方式、ボーナス払いなどの条件設定に対応
・返済パターンを最大3つまで端末内に保存可能
・住宅ローンの累計返済額、将来の返済予定、残債のシミュレーションに対応

住まい選びから住宅ローンの返済計画まで、ぜひご活用ください。