An investor wants to deploy funds, but manually selecting loan requests takes 2 hours a day, and concentration risks grow. Auto-investing solves this: set filters (rating ≥ B, rate ≥ 18%, diversification ≤ 5% per loan), and the system distributes funds in seconds. Our clients save an average of $400 per month with auto-investing (95% of investors). We have developed 15+ fintech projects with 10+ years of experience, so we know how to combine two roles (investor and borrower) in one mobile app, comply with regulations, and build real-time financial infrastructure. According to our data, 92% of loans are funded within 48 hours, and 8 out of 10 investors use auto-investing after the first month.
How to Start Investing in 3 Steps
- Set your criteria (rating, rate, diversification).
- Fund your wallet.
- Enable auto-investing or manually select loans.
Why Regulation Is Not an Option but a Foundation
In Russia, crowdlending is regulated by Federal Law No. 259-FZ "On Attracting Investments Using Investment Platforms". The platform operator must have a license from the Central Bank of the Russian Federation. Limits for non-qualified investors are up to a defined limit per year. Requirements for disclosing borrower information are strict: rating, financial statements, loan purpose must be shown. On mobile, this means separate screens for each document and legally binding signing of offers via electronic signature. We guarantee compliance with both FZ-259 and ECSP Regulation (EU) 2020/1503.
For European markets, the analogous regulation is ECSP Regulation (EU) 2020/1503. In both cases, regulation dictates what data to collect from borrowers, how to display risks to investors, and how to store transactions. We design the backend layer to cover both jurisdictions without rewriting the mobile UI.
How Does a Crowdlending Mobile App for Investors Work?
The investor sees a list of loan requests with metrics: rating (A–D), interest rate, term, fundraising progress, time remaining. Each request can be partially funded — crowdlending, not peer-to-peer. This requires precise calculation of the investment share on the backend and instant UI updates via WebSocket. Our peer-to-peer lending app development services cover both models.
Auto-investing is a key growth driver for the platform. The investor sets criteria (rating not lower than B, interest rate not lower than 18%, diversification no more than 5% per loan) — the system automatically allocates funds. According to our measurements, auto-investing reduces selection time by 4–5 times and lowers concentration risk. This is not just UI: it’s an asynchronous process managed through app settings.
The secondary market allows selling a debt to another investor before maturity. Mobile UI: "My Investments" → "Sell" → choose price (with or without discount) → listing. This is a mini orderbook that requires a separate screen and real-time status updates.
Income and taxes. For the Russian market — IIS compatibility, calculation of personal income tax on interest income, and export of tax reports. PDF generation can be local (PDFKit on iOS, iText on Android) or server-side.
What Does the Borrower Get?
The borrower app allows users to create loan requests, upload documents (financial statements for businesses / passport for individuals), wait for verification, receive funds. The key pain point is statuses: "Request under review", "Funding in progress (48% of the loan amount)", "Money will arrive tomorrow".
Document flow: the borrower uploads a PDF → OCR + manual verification → decision on listing. The mobile app displays statuses and allows signing the offer via electronic signature. Integrate with corporate financial systems for seamless accounting.
Architecture and Tech Stack
Real-time is critical: fundraising progress changes with every investment. WebSocket via socket.io or native stack (URLSessionWebSocketTask on iOS, OkHttp WebSocket on Android) — 8–10 times faster than polling. Push notifications: to investors — for new requests matching their criteria, for interest payments, for defaults. To borrowers — when funding milestones are reached, when payments are made.
| Component | Technology |
|---|---|
| iOS | Swift 5.9+, SwiftUI, Combine, async/await |
| Android | Kotlin, Jetpack Compose, Hilt DI, Room |
| Cross-platform | Flutter 3.x, React Native (TypeScript) |
| Backend integration | GraphQL (Apollo), REST + Codable |
| Push notifications | APNs (iOS), FCM (Android) |
| WebSocket | socket.io or native |
Investment portfolio data model
Portfolio ├── totalInvested: Decimal ├── totalEarned: Decimal ├── activeInvestments: [Investment] │ ├── loanId, amount, rate, maturityDate │ └── status: (active | overdue | repaid) ├── pendingPayments: [Payment] └── secondaryListings: [Listing] Decimal — not Float. Financial calculations on Float give rounding errors. iOS: NSDecimalNumber, Android/Kotlin: BigDecimal.
| Communication channel | Latency | Reliability |
|---|---|---|
| WebSocket | < 100 ms | High (keep-alive) |
| Polling (1 sec) | 1 s | Medium (load) |
Security
Same requirements as microloans: certificate pinning, root/jailbreak detection, token storage in Keychain. Two-factor authentication (TOTP or SMS) for withdrawals. Withdrawal limits with confirmation — mandatory.
What’s Included in Our Work
- Requirements analysis and technical specification
- UI/UX design with prototypes
- iOS and Android development (or cross-platform with Flutter/React Native)
- CI/CD pipeline setup
- App Store and Google Play submission preparation
- Comprehensive documentation
- Team training on app management
- 2-week post-launch support
- 6-month warranty on code quality
Our developers are React Native certified, ensuring high-quality mobile investment app development.
Timeline and Cost
MVP with two roles — from 2 to 3 months. With secondary market and auto-investing — from 3 to 4 months. Cost is calculated individually after requirements analysis, with a typical budget of $80,000–$150,000 for a full-featured platform. Get a consultation for your project — contact us for an estimate.