Fintech app development with security and compliance in mind

Know which kind of fintech you are

Fintech covers very different businesses, and the regulatory load changes with each. A budgeting app that only reads account data is lighter than a lending product, and both are lighter than something that holds customer funds.

Most early-stage products sit on a licensed partner: a bank, an e-money institution or a payment processor holds the money and the license. Your app is the experience on top. That is a sensible route, but it means your partner's rules shape what you can build and how fast you can ship.

We build the software. Licensing, money transmission rules, consumer lending law and financial promotion rules are for your lawyer and your partner bank. Please bring them in early, before design is final.

The building blocks of a fintech app

Using an existing provider for identity and payments is almost always cheaper and safer than building those from scratch. Our job is to connect them cleanly and handle the failure cases, such as a declined check or a timeout in the middle of a transfer.

Plan the unhappy paths early. A transfer can be pending, reversed or stuck, a bank connection can expire, and an identity check can ask for a second document. Each state needs a plain message and a clear next step, and each needs a test case before launch.

Security choices that matter

Sign-in should use strong authentication: passkeys or biometrics with a fallback, and step-up checks for sensitive actions. Sensitive values are never stored in plain text on the phone, sessions expire, and the app refuses to run on obviously tampered devices where that is appropriate.

On the back end, we follow the principle of least access, log every change to money-related records, encrypt data at rest and in transit and separate test from production. If your product handles card data directly, PCI DSS applies, which is why most teams use a provider's hosted fields so card numbers never touch their own servers. Stripe documents this approach.

Before launch, an independent penetration test is a sensible step. We can prepare the app for it and fix what it finds. We cannot certify the result ourselves.

App store and regulatory friction

Apple's review guidelines have specific requirements for finance apps, including that the developer account belongs to a legal entity for certain categories such as lending and trading, and that apps clearly show terms, fees and rates. Google Play has its own financial services policy with declarations for loan and crypto apps.

Allow time for review and for your provider's sandbox approvals. These often take longer than the code. We plan the schedule around them and give you a checklist of documents to prepare.

Advertising and marketing wording for financial products is regulated in many countries. Keep claims factual, avoid promises about returns, and have your lawyer approve store text. Our MVP development approach suits fintech well: prove one narrow flow with real users, then expand.

Data location and retention are further questions for your adviser. Financial records often must be kept for set periods, while privacy law pushes the other way on personal data. We design deletion and export tools so both can be met.

Price and process

Projects start at $1,500 and our rate is $30 an hour. A read-only account view or a calculator-style app is near the low end. Onboarding with identity checks, payments, a ledger, an admin dashboard and an external security test move the price up. We give a fixed quote within one working day of a short call, after we know which partners you plan to use.

We work remotely from Pune and run weekly demos on test data. Accounts and code stay in your name. See mobile app development and our SaaS development service for the web side.