Bank-Grade · Compliance-First FinTech

FinTech App Development
Services That Build Trust

Appther is a fintech app development company that engineers secure, compliant, and scalable financial products, from digital banking and payment wallets to lending, wealthtech and insurtech. PCI-DSS, PSD2 and GDPR ready, launched in as little as 12 weeks.

PCI-DSS & PSD2 Biometric Security AI Fraud Detection 12-Week MVP
Payment secured
AI blocked fraud
Instant transfer
200+
Products shipped globally
15+
Countries served
99.9%
Platform uptime SLA
12 wk
To a compliant MVP
Why FinTech Is Different

Financial software demands trust, security & compliance

In fintech, a single vulnerability or compliance gap can cost your licence and your customers' confidence. That's why we don't just build apps. We engineer regulated financial products where security, auditability, and reliability are designed in from the very first sprint, not bolted on before launch.

Security is non-negotiable

Bank-grade encryption, tokenization, biometric auth, and penetration testing on every build, because you're handling people's money, not just data.

Compliance from day one

PCI-DSS, PSD2, GDPR, KYC/AML and SOC 2 are baked into the architecture, so audits and regulatory approvals become milestones, not roadblocks.

Built to scale

Event-driven microservices and auto-scaling cloud infrastructure that stay fast and reliable from your first thousand users to your first million.

FinTech Solutions

FinTech apps we design & develop

Whatever your financial product, our team has the domain expertise and pre-built accelerators to ship it faster, securely and at scale.

Digital Banking & Neobanks

Full-featured mobile banking and neobank apps with accounts, cards, transfers, savings vaults, and onboarding, plus core-banking and BaaS integrations.

Account openingCard issuingKYC

Digital Wallets & Payments

E-wallets, P2P transfers, QR and contactless payments, bill pay, and merchant checkout with 30+ gateway and UPI integrations.

P2P transfersUPIContactless

Lending & BNPL

Digital lending, buy-now-pay-later, and micro-loan platforms with automated credit scoring, e-KYC, loan management, and repayment engines.

Credit scoringLoan originationBNPL

WealthTech & Investing

Investment, trading, and robo-advisory apps with portfolio management, fractional investing, market data, and automated rebalancing.

Robo-advisoryTradingPortfolios

InsurTech

Digital insurance platforms with policy management, instant quotes, claims automation, and AI-driven underwriting and risk assessment.

Claims automationUnderwritingQuotes

Personal Finance (PFM)

Budgeting, expense tracking, savings automation, and financial-wellness apps powered by account aggregation and AI insights.

BudgetingRound-upsInsights

Remittance & Cross-Border

Multi-currency remittance and international transfer apps with FX, compliance screening, and low-cost payout rails.

Multi-currencyFXPayouts

Blockchain & Crypto

Crypto wallets, exchanges, DeFi, and tokenization platforms with secure key management and on/off-ramp integrations.

Crypto walletsDeFiWeb3

RegTech & Compliance

Automated KYC/AML, transaction monitoring, fraud analytics, and regulatory reporting tools that keep you audit-ready.

KYC/AMLMonitoringReporting
Our Services

End-to-end fintech development services

From strategy and compliance architecture to launch and scaling. One accountable team across the entire product lifecycle.

FinTech Consulting & MVP Strategy

Product discovery, regulatory scoping, and a validated MVP roadmap that de-risks your launch.

Custom App Development

Native iOS/Android or cross-platform Flutter & React Native apps engineered for performance.

FinTech UI/UX Design

Conversion-focused, accessible interfaces that make complex finance feel effortless and trustworthy.

API & Banking Integrations

Open Banking, payment gateways, KYC providers, and core-banking connections built to spec.

AI & Data Engineering

Fraud detection, credit models, robo-advisory, and conversational banking with explainable AI.

Legacy Modernization

Re-platform and migrate legacy financial systems to secure, cloud-native architectures with zero downtime.

Security Testing & QA

VAPT, code audits, and automated test suites so every release ships secure and stable.

Support & Maintenance

24/7 monitoring, patches, and feature releases under clear SLAs after go-live.

Cloud & DevOps

Auto-scaling AWS/GCP/Azure infrastructure, CI/CD, and observability tuned for financial workloads.

Security & Compliance

Bank-grade security, audit-ready compliance

We architect every fintech product around a zero-trust security model and the regulatory frameworks your market demands, so you can pass audits, win banking partners, and earn customer trust from launch day.

PCI-DSS PSD2 & Open Banking GDPR & CCPA SOC 2 ISO 27001 KYC / AML

AES-256 & TLS 1.3 Encryption

Data encrypted at rest and in transit, with tokenization of all sensitive card and account data.

Biometric & MFA Authentication

Face/Touch ID, device binding, and adaptive multi-factor auth to stop account takeover.

Real-Time Fraud Detection

AI models flag anomalies and block suspicious transactions before they settle.

Full Audit Trails

Immutable logs and reporting for every action, ready for regulators and partners.

How We Work

Our fintech development process

A proven, compliance-first delivery model that gets you to a secure launch, fast, transparently, and without surprises.

01

Discovery & Compliance Scoping

We map your business model, target markets, and the exact regulatory requirements, defining the compliance and security blueprint before a line of code.

02

UX & Secure Architecture

Clickable prototypes plus a scalable, zero-trust system design covering data flows, integrations, and infrastructure.

03

Agile Development

Two-week sprints with a working prototype by week 3, so you validate features early and steer the build with confidence.

04

Security Testing & QA

Penetration testing, code audits, and automated regression suites. Every release is verified secure and stable.

05

Launch & Store Approval

App Store and Play Store submission, banking-partner sign-off, and a monitored, staged production rollout.

06

Scale & Support

24/7 monitoring, performance tuning, new features, and ongoing compliance re-certification as you grow.

Technology

A modern, secure fintech tech stack

Battle-tested tools chosen for security, performance, and regulatory reliability.

Mobile

SwiftKotlinFlutterReact Native

Backend

Node.jsJava / SpringPythonGo.NET

Cloud & DevOps

AWSGCPAzureKubernetesTerraform

Payments & Banking

StripeAdyenPlaidRazorpayUPIMarqeta

Data & AI

PostgreSQLKafkaTensorFlowPyTorchSnowflake

Security

OAuth 2.0VaultAES-256WAFOWASP MASVS
Why Appther

Why fintech founders choose Appther

A partner that treats trust, security, and speed as the same priority.

Compliance-First DNA

We've delivered regulated, security-critical platforms, so PCI-DSS, PSD2, and KYC/AML are second nature, not a learning curve on your dime.

Speed Without Shortcuts

A working prototype in week 3 and a compliant MVP in 12 weeks, fast delivery that never trades away security or auditability.

Fixed-Price Transparency

Clear, fixed-price proposals after a free scoping session. No hourly billing surprises, no scope-creep invoices.

Global Delivery

200+ products shipped across 15+ countries, with region-specific compliance expertise for the US, UK, EU, and India.

AI-Native Engineering

In-house AI/ML team for fraud detection, credit scoring, and robo-advisory, a real edge in modern financial products.

Long-Term Partnership

90 days of free post-launch support and dedicated teams that scale with you. We're invested in your growth, not just the launch.

Market Opportunity

FinTech is reshaping how the world moves money

The global fintech market is projected to surpass $1.5 trillion in revenue by 2030, driven by embedded finance, real-time payments, and AI-powered banking. The winners will be the products that pair delightful experiences with uncompromising security. That's exactly what we build.

Building for a specific vertical? Explore our FinTech industry solutions for sector-specific use cases, or talk to us about your product.

$1.5T

Projected fintech revenue by 2030

73%

Of consumers use a fintech app monthly

Faster payments with real-time rails

60%

Of fraud caught earlier with AI models

FAQ

FinTech app development questions, answered

FinTech app development typically ranges from $40,000 for a focused MVP to $250,000+ for a full-scale, multi-product platform. The cost depends on the app type (wallet, neobank, lending, wealthtech), compliance scope (PCI-DSS, PSD2, KYC/AML), integrations, and platforms. After a free scoping session we provide a detailed, fixed-price proposal. No hourly billing surprises.
A compliance-ready fintech MVP usually launches in 12–16 weeks. A full-scale platform with multiple products, admin panels, and deep banking integrations takes 5–9 months. We work in two-week agile sprints and deliver a working prototype by week 3 so you can validate early.
Yes. We build compliance in from day one: PCI-DSS for card data, PSD2 and Open Banking for the EU/UK, GDPR and CCPA for data privacy, KYC/AML with automated identity verification, and SOC 2 / ISO 27001 aligned security controls. We also support region-specific frameworks such as RBI guidelines (India), FCA (UK), and FinCEN (US).
Every app ships with a zero-trust architecture: AES-256 encryption at rest, TLS 1.3 in transit, biometric and multi-factor authentication, tokenization of sensitive data, device binding, real-time AI fraud detection, and mandatory penetration testing (VAPT) before launch. We never store raw card or credential data and follow OWASP MASVS mobile security standards.
We integrate 30+ payment and banking providers including Stripe, Adyen, Plaid, Razorpay, UPI, PayPal, Braintree, Marqeta (card issuing), Dwolla (ACH), and Wise (cross-border), plus Open Banking / account aggregation APIs. We also build direct core-banking, ledger, and card-network integrations for enterprise clients.
Yes. We build AI-powered fraud and anomaly detection, credit-scoring and risk models, robo-advisory and portfolio automation, conversational banking assistants, and document/KYC intelligence. Our AI team designs models that are explainable and audit-ready, essential for regulated financial products.
We deliver the full stack: native iOS and Android (or Flutter/React Native) apps, web dashboards, admin and compliance back-office, secure APIs, and cloud infrastructure. You get one accountable team from architecture and design through to launch, monitoring, and scaling.
Appther has shipped 200+ products across 15+ countries, including AI-driven and regulated financial platforms. We combine bank-grade security, compliance-first architecture, and modern UX with fixed-price delivery, a prototype in week 3, and 90 days of free post-launch support, so you launch fast without cutting corners on trust.
Start Your Project

Let's build your fintech product

Tell us about your idea. You'll get a response within 24 hours, a free scoping session, and a clear, fixed-price roadmap, with no obligation.

Free scoping session & fixed-price proposal
NDA available on request, your idea stays safe
Working prototype demo delivered in week 3
Dedicated team & 90-day post-launch support

 Your information is fully confidential. We respond within 24 hours.

Ready to Build?

Launch a FinTech Product People Trust

Book a free scoping session. We'll map your platform, define the compliance path, estimate the exact timeline, and show you a relevant case study, with no commitment required.

Free scoping session
Fixed-price proposal
Prototype in week 3
Compliance built in
90-day post-launch support