Fintech apps built by people who’ve shipped them

We build toward PCI-DSS and standard fintech security practice — tokenization, no raw card data touching your servers, encryption in transit and at rest — but we don’t issue the attestation itself. Formal validation is done by a PCI SSC-qualified assessor, or through self-assessment (SAQ) if your merchant level allows it. What we can do is run a Cybersecurity Audit or a HIPAA & GDPR Compliance Review beforehand, so there’s less for that assessment to flag.

Depends on the project. For BitCoinPay, we own the iOS client only — the exchange engine and backend belong to the client’s own team, and we build to the APIs they expose. For a new build, we can take on the backend too, or integrate with infrastructure you already have. Tell us your stack and existing setup, and we’ll scope accordingly.

It depends on scope, same as any Applefy project: a simple, single-purpose app runs 3-6 weeks, a mid-complexity product with onboarding and a handful of transaction types runs 2-4 months, and a full trading or banking client with multiple regulated flows runs 4-8 months. KYC integrations, payment rails, and exchange APIs are usually what moves a project from the first tier into the second or third.

The same three tiers as any Applefy project: $20K-$40K for a simple app shipped in 3-6 weeks, $40K-$100K for a mid-complexity product over 2-4 months, and $100K-$250K+ for a complex, multi-flow product over 4-8 months. Where a given project lands depends on scope — transaction types, KYC/compliance integration, number of platforms.

We follow OWASP and NIST practice by default — encryption in transit and at rest, scoped access, no sensitive data sitting in logs — the same standard our own Cybersecurity Audit checks for. We don’t host or hold your users’ production data; that sits in your own systems. Where you need that boundary formally mapped — data flows, retention, GDPR obligations — our HIPAA & GDPR Compliance Review covers that separately.

Concretely: session handling and authentication flows built for an app where a bad build costs real money, and a release process careful enough to keep shipping on a live trading app — which is the actual discipline behind BitCoinPay Trade’s nineteen-plus releases. We also offer a separate Cybersecurity Audit engagement on the finished app before you ship — a second team, a second pass, not a rubber stamp from whoever wrote the code.