A mobile banking app MVP runs $80,000 to $150,000 and a full two-platform app $150,000 to $350,000. Here is where the budget goes and how to shorten the build.
A mobile banking app MVP runs $80,000 to $150,000 and ships in four to six months. A full app on both iOS and Android with cards, biometrics, and a basic fraud layer runs $150,000 to $350,000. A neobank-grade build with open banking, multi-currency accounts, and multi-market compliance runs $350,000 to $600,000 or more. These are planning ranges, not quotes, and the single biggest lever is how much banking infrastructure you build yourself instead of renting from a partner.
A mobile banking app is the customer-facing layer of a bank or neobank: onboarding, accounts, transfers, cards, and support, delivered through iOS and Android. It is not the same as core banking software. If you are still deciding between the full banking stack and a narrower product, start with our banking software development guide, which covers the core, licensing, and banking-as-a-service decisions that sit underneath this app.
| Scope | What you get | Typical cost | Timeline |
|---|---|---|---|
| Single-platform MVP | One OS, accounts, transfers, KYC, on a BaaS core | $80,000–$150,000 | 4–6 months |
| Full app, both platforms | Cards, biometrics, push, admin console, fraud basics | $150,000–$350,000 | 6–9 months |
| Neobank-grade, multi-market | Open banking, multi-currency, advanced fraud, AI | $350,000–$600,000+ | 9–14 months |
These tiers sit inside the ranges on our FinTech app cost guide, which puts a single-market MVP at $80,000 to $200,000 and multi-currency or lending builds at $200,000 to $400,000 and up. The MVP tier above assumes a banking-as-a-service partner such as Unit or Synctera in the US or Solaris and Swan in Europe, so the ledger, cards, and license sit with them and you own the app.
Four things move the price, in rough order of impact. First, whether you build on BaaS or your own core: building your own core is a multi-year capital project with no customer value until the end. Second, compliance depth: KYC, sanctions screening, and transaction monitoring add real engineering and scale with each market. Third, the number of platforms and device features you support. Fourth, integrations: card issuing, payment rails, and push notifications each add time, and each is where scope quietly grows.
| Must have in v1 | Can wait |
|---|---|
| Account opening with KYC | Lending and credit |
| Balances and transaction history | Foreign exchange |
| Transfers and bill payments | Investments |
| Card management via a partner | Multi-currency accounts |
| Biometric and two-factor login | Budgeting and rewards |
| Admin and operations console | AI assistants |
| Push notifications | Real-time spend analytics |
The admin console is the module nobody demos and everyone needs. When a customer says a transfer never arrived, your support team needs a screen showing the transaction, its state, and the rail it took. Without it, every support ticket becomes an engineering ticket. The trimming logic here is the same as any FinTech MVP: ship the money movement first, everything else later.
For a banking app we usually recommend native for the parts that touch security and device features, and cross-platform only when the budget is tight. Flutter and React Native cut the cost of a second platform roughly in half, but a banking app leans on Face ID and fingerprint, secure storage, background push, and app attestation more than most products, and those are the places a cross-platform layer adds friction. We covered the trade-off in Flutter vs React Native and native vs cross-platform. The short answer: if the app is the bank, native; if it is a companion view into an existing system, cross-platform is fine.
The mobile app has its own security surface, separate from the backend. Biometric authentication is table stakes now, not a nice-to-have, and deepfake fraud grew sharply in the US through 2025, which pushed liveness checks from "match a selfie to an ID" toward real-time analysis of micro-expressions and light reflection. Device binding ties a session to the specific phone, and app attestation on iOS and the Play Integrity API on Android confirm the app has not been tampered with.
On the backend side you still inherit the usual financial controls: strong customer authentication in Europe under PSD2 (transitioning to PSD3 and the Payment Services Regulation in 2026), an AML program under the US Bank Secrecy Act, and PCI DSS v4.0.1 if you touch card data. Never store raw card numbers; push card handling to a compliant processor. The full control list is in our FinTech security requirements guide. None of this is legal advice, and the specifics depend on your license and markets, so get compliance into the architecture in week one, not launch week.
We start with the money movement, not the screens. A banking app is a ledger with an interface, so we get the account model, transfers, and reconciliation working against a test core before any UI polish. Then we wire KYC and transaction monitoring in early, because those vendors have contracts and testing lead times that do not compress. Most of our delivered financial work is exactly this kind of build: a multi-market brokerage trading system covering Hong Kong, US, and China A-share markets, and a financial management system with AP/AR, tax computation, and real-time statements. The mobile layer we build in Flutter or native depending on how deep the device integration goes. If you are planning a banking product, the FinTech development page shows the range of what we deliver, and the KYC integration guide walks through the onboarding work in detail.
$80,000 to $150,000 for a single-platform MVP on a BaaS core, $150,000 to $350,000 for a full app on both platforms with cards and fraud basics, and $350,000 to $600,000 or more for a multi-market neobank-grade build. These are planning ranges, not quotes.
Not necessarily. Many digital banking apps operate under a banking-as-a-service partner's license. You either hold a license or operate under a partner's, and the requirement depends on your product, your market, and where your customers live.
Native for an app that is the bank itself, because biometrics, secure storage, and app attestation are smoother without a cross-platform layer. Cross-platform is fine for a companion view into an existing system, at roughly half the second-platform cost.
Four to six months for a single-platform MVP, six to nine for a full two-platform app, and nine to fourteen for a multi-market build. Plan a discovery phase and a small pilot with real customers before a full launch.
Compliance depth. KYC vendors, sanctions screening, transaction monitoring, and the work to wire and test them scale with each market and are the line item founders most often under-budget.
Yes, but keep it on the detection and text side. Fraud and anomaly detection, document review in onboarding, and support chat work well. Credit decisions and fraud holds should keep a human in the loop.
Planning a mobile banking app or a financial product of any kind? Talk to us about your project.
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