Amela
Asset Bridge Real Estate Co., Ltd. — New Platform Launch Story
ℹ︎For confidentiality, company names, project names, and system images have been replaced with pseudonyms and mocks.

Real-estate investment P&L calculation, built in-house from scratch.

EstateLens is a mobile app that calculates an investment property's P&L just by entering the figures. It visualizes yield, cash flow, loan repayment, and sale gain/loss on the spot.

An accurate calculation engine, mobile optimization, long-term P&L visualization, and centralized operations management — the story of launching a new platform, built in-house from scratch in 8 months, delivering an app that meets all four axes an investment decision requires at once.

Launch
0→1
Investment simulation from scratch
Calculation time
60 min → 5 min
From manual to app
Projection period
30 years
Auto-project long-term CF and balance
Platforms
iOS / Android
Complete on-site in negotiations
EstateLens
Gross yield
8.4%
Net yield
6.1%
30-year cash flow
Monthly CF
+¥82,000
Sale gain/loss
+4.2M
Save and export to PDF
01
CLIENT
About the client

Asset Bridge Real Estate — one of Japan's leading firms supporting real-estate investment.

Asset Bridge Real Estate Co., Ltd. provides sales and consulting for investment properties. Its strengths are property recommendations tailored to each investor and long-term support in building assets.

As they expanded, they needed a tool to present P&L to investors on the spot during negotiations. AMELA partnered with them to build this investment simulation app in-house from scratch.

Calculation items
Dozens of items
P&L projection
30 years
Mobile optimization
100%
BUSINESS FLOW — How It Works
STEP 01
Enter property terms
Enter price, rent, expenses, and loan terms
STEP 02
Auto-calculate
Instantly calculate yield, CF, and loan balance
STEP 03
Visualize with graphs
Grasp 30-year cash flow intuitively
STEP 04
Save · propose · export
Save calculations and propose on the spot · PDF export
02
CHALLENGE
Design challenges to solve

Four structural requirements demanded of an investment decision tool.

None of these were technology-selection issues — they were business requirements tied directly to proposal speed, investor confidence, and close rate. Building new from scratch required a design that satisfied them all at once.

Accuracy of complex P&L calculations
Hand-calculating dozens of items in Excel invites calculation errors and time overruns, lowering proposal quality.
Responsiveness during negotiations
If you can't calculate on the spot, it turns into take-home → answer later, leading to lost opportunities.
Poor visibility into long-term P&L
Without long-term visibility into loan balance and after-tax CF, investors can't decide.
Scattered deal data
If calculation results scatter across individual files, saving, comparing, and operating become difficult.
03
ARCHITECTURE
The architecture we built together

Turning investment simulation into a scalable platform across four domains.

We built four domains — a calculation engine, mobile optimization, visualization, and operations management — entirely in-house from scratch with React Native + Node.js. By consolidating the calculation logic on the server side, we delivered a platform that both the app and the admin console use consistently.

Amela
EXECUTION
8 months
Duration
30 person-months
Total effort
Domain ①
Calculation engine
Challenge
The need to perform dozens of P&L calculations accurately and quickly
Solution
Server-consolidated calculation engine
Auto-calculate equal-payment loans, yield, and CF
Domain ②
Mobile optimization
Challenge
The need to present calculations on the spot during negotiations
Solution
iOS / Android native app
Complete it on your phone — instant calculation on the go
Domain ③
Visualization
Challenge
The need to convey long-term P&L trends to investors intuitively
Solution
30-year cash flow visualization
Grasp annual CF and balance trends at a glance
Domain ④
Operations management
Challenge
The need to centrally manage members, content, and calculation masters
Solution
Operations management console
Centrally manage members, columns, and seminars at headquarters
FRONTEND
React Native TypeScript Redux-Saga D3D3.js
BACKEND
Node.js Express MySQL Redis
ADMIN / INFRA
Nuxt.js AWS
04
IMPACT
The value the platform creates

Asset Bridge Real Estate's business growth, accelerated.

This platform continuously produces business outcomes — proposal speed, investor confidence, and operational efficiency — rather than technical metrics.

A platform to propose on the spot
Present calculations instantly during negotiations and prevent lost opportunities.
Error-free P&L calculation
Unified calculation logic eliminates individual dependency and calculation errors.
Visualization that boosts investor confidence
Show long-term CF in graphs to support decision-making.
Operations that turn deal data into an asset
Save and compare calculations, all centrally managed at headquarters.
🧑‍💼
STAKEHOLDER
Investors
Typically
✕ The basis for P&L is unclear, so decisions can't be made
With EstateLens
✓ Check 30-year CF and yield on the spot
Business impact
Faster decision-making
📱
STAKEHOLDER
Sales rep
Typically
✕ Calculations take time, so proposals can't be made on the spot
With EstateLens
✓ Present an investment decision report in 5 minutes
Business impact
Higher close rate
🏢
STAKEHOLDER
Operations HQ
Typically
✕ Calculations depend on individuals, causing inconsistent quality
With EstateLens
✓ Centrally manage calculation logic and masters
Business impact
Standardized proposal quality
📈
STAKEHOLDER
Management
Typically
✕ Deal data isn't accumulated, so it can't inform strategy
With EstateLens
✓ Accumulate and analyze calculation data
Business impact
Data-driven business growth
05
DEMO
Three scenarios

Experience EstateLens with a working demo.