App Development10 Best Fintech App Development Companies in 2026

The best app development company for fintech depends on what you are building and how big your budget is. ScienceSoft, Itexus and Intellectsoft are large firms for banking, lending and wallet builds with six-figure budgets. Praxent suits companies modernizing an existing financial system, and Softjourn and Cleveroad offer mid-size teams with payments and investing work. Topflight Apps, Sourcetoad and ChopDawg are smaller US studios. App369, which publishes this guide, is one developer and fits scoped Stripe payment and billing work, not a bank core.

What a fintech app development company is (and isn’t)

A fintech app development company builds software that moves, lends, stores or tracks money: payment and wallet apps, lending platforms, investing apps, banking front ends and billing inside other products. This guide includes firms that show fintech case studies on their own websites.

For a rough budget before you talk to anyone, the free app cost calculator gives a range, and App369’s fixed prices show what scoped payment work costs.

A developer is not your compliance department. PCI DSS applies to anyone who stores, processes or transmits card data, licenses such as state money transmitter licenses belong to your company, and your bank or banking-as-a-service partner sets its own rules. The 2024 bankruptcy of Synapse Financial Technologies, described in the CFPB’s complaint, is a reminder to check partners as carefully as developers.

How I compared these fintech companies

I checked each company on November 1, 2026, using only what it publishes:

• Fintech proof: named fintech case studies on its own site, such as a loan system, a wallet or a wire-transfer product.
• Published pricing: minimum project size and hourly rate on Clutch, and any price range on the company’s own site.
• Track record shown publicly: the Clutch review count on the day I checked.
• Compliance claims: SOC 2, ISO 27001 and PCI DSS wording, quoted as each firm states it.
• Location: where the company and Clutch say it is based.

I didn’t hire these firms, review their code, or see their audit reports, so every compliance claim below is the firm’s own words. Companies are grouped roughly from larger firms to smaller studios. The order is not a ranking.

The best fintech app development companies in 2026

1. ScienceSoft, best for large banking and lending software with a big budget

ScienceSoft is based in McKinney, Texas. Its banking and finance page puts financial software “from $150,000 to $2,000,000+”, and its case studies include a loan management system for Atlas Credit that the page says won Best-in-Class LMS at the Global FinTech Innovation Awards 2025. It says it runs an “ISO 27001-certified security management system”. On Clutch it lists a $5,000+ minimum, $50–$99 per hour and 46 reviews.

• Strengths: a published price range; a named, award-winning lending case study; an ISO 27001 claim.
• Limitation: its own range starts at $150,000, far above its $5,000 Clutch minimum, and it names no SOC 2 report.
• Best for: lenders and financial firms with enterprise budgets.

2. Itexus, best for wallets and banking apps, with European delivery

Itexus lists Dover, Delaware on Clutch, with an office in Warsaw, Poland. Its site says discovery “may start from around $30,000” and enterprise projects “often range from $150,000 to $1,000,000+”. Its case studies include a digital wallet and app ecosystem for Coinstar, where it says “security is ensured through PCI DSS-compliant practices”. On Clutch it lists a $10,000+ minimum, $25–$49 per hour and 41 reviews.

• Strengths: published price ranges; a named wallet case study; low Clutch hourly rates.
• Limitation: it describes its controls as structured around SOC 2 and ISO/IEC 27001 “expectations”, which is different from a certificate, and much of its delivery looks European, so US buyers get less time-zone overlap.
• Best for: wallet, banking and robo-advisor builds that want published price ranges.

3. Intellectsoft, best for enterprises that want a large firm with an ISO 27001 badge

Intellectsoft’s site footer gives a New York address, while its Clutch profile shows both New York and Miami. Its fintech page lists a London Stock Exchange share price app, an Experian credit report app and a blockchain wallet. Its site shows an ISO 27001 badge without describing its scope, and it offers a project estimate within three to five days through a form. On Clutch it lists a $50,000+ minimum, $50–$99 per hour and 46 reviews.

• Strengths: well-known financial names on its fintech page; an ISO 27001 badge; a large-firm profile.
• Limitation: no published prices, the joint-highest Clutch minimum here, and its fintech page doesn’t link to case studies.
• Best for: enterprises with $50,000+ budgets that want a large vendor.

4. Praxent, best for modernizing an existing banking or lending system

Praxent is listed in Austin, Texas on Clutch. Its case studies include digital banking modernization for DCI, the NEWITY SBA loan platform, and payments reconciliation it says handles $2B+ a day for a processor it doesn’t name. Its site footer shows an AICPA SOC 2 seal and mentions “SOC 2 alignment” for its PraxentGuard tooling. On Clutch it lists a $25,000+ minimum, $50–$99 per hour and 66 reviews.

• Strengths: named banking and SBA lending work; a SOC 2 seal on its site; a focus on financial systems.
• Limitation: no published prices (“outcome-based” pricing), and its stated focus is modernizing existing financial systems with AI. Ask for the SOC 2 report itself.
• Best for: banks and lenders updating systems they already run.

5. Softjourn, best for payments and money-transfer products

Softjourn is based in Fremont, California, with offices in Poland, Ukraine and Brazil. Its case studies include Viamericas wire transfers, PayPartners, Card Tent, Barracuda FX and PEX expense management, where it describes “ensuring rigorous PCI compliance”. On Clutch it lists $50–$99 per hour and 6 reviews, with no stated minimum, and the smallest budget its reviews report is $200,000.

• Strengths: several named payments case studies; PCI work described in a case study.
• Limitation: only 6 Clutch reviews, no published prices, reviews that point to large budgets, and its offices are mostly outside the US (Poland, Ukraine, Brazil). It names no SOC 2 or ISO 27001 on the case study pages I read.
• Best for: payment processors and money-transfer products.

6. Cleveroad, best for investing apps on a mid-size budget

Cleveroad lists Claymont, Delaware alongside Tallinn, Estonia and Oslo, Norway, while Clutch shows New York. Its fintech case study is a micro-investing platform for a Middle East investment company whose name isn’t given. It lists ISO 27001 among its certifications. On Clutch it lists a $10,000+ minimum, $25–$49 per hour and 82 reviews.

• Strengths: low Clutch hourly rates; the most Clutch reviews among the mid-size firms here; an ISO 27001 listing.
• Limitation: its fintech case study doesn’t name the client, the time-zone gap is large for US buyers, and it names no PCI DSS or SOC 2.
• Best for: investing and personal-finance apps that need a mid-size team at lower rates.

7. Sourcetoad, best for Florida companies that want a SOC 2 claim from a small firm

Sourcetoad is based in Tampa, Florida. Its financial services page says “We are SOC 2 Type 2 compliant” and that it has “built software that passes PCI DSS and GDPR compliance”. Its case studies include middleware for Certegy, a check and ACH payment processor, and a tax-document app for Jackson Hewitt. On Clutch it lists a $25,000+ minimum and 9 reviews, with no hourly rate shown.

• Strengths: the clearest SOC 2 statement in this guide; named payments work; a Tampa address on Clutch.
• Limitation: only 9 Clutch reviews, no published prices, and fintech is one industry among many for it.
• Best for: US companies that want a smaller vendor that states it is SOC 2 Type 2 compliant (ask for the report).

8. Topflight Apps, best for funded startups that want a published budget range

Topflight Apps is based in Irvine, California. Its fintech page says an average fintech app costs “US$40,000 to $125,000”, with maintenance at 15–25% a year, and it says it is “committed to providing PCI compliant fintech application development services”. Its case studies include the Sherpa personal finance app and the Wealth by Coronation banking app. On Clutch it lists a $50,000+ minimum, $100–$149 per hour and 43 reviews.

• Strengths: a published cost range and maintenance estimate; named consumer finance apps; US hours.
• Limitation: the highest Clutch hourly rate here, its own $40,000 low end sits below its $50,000+ Clutch minimum, and it names no certificate.
• Best for: funded startups building a consumer finance or wealth app.

9. ChopDawg, best for small budgets and investing MVPs

ChopDawg is listed in Philadelphia, Pennsylvania on Clutch. Its fintech-adjacent work includes the Terros fractional land investing app and NIL Live crowdfunding, and it mentions immutable audit logs and Stripe Identity for KYC identity checks. Those are the only two investing-adjacent cases I found on its site. On Clutch it lists a $1,000+ minimum, $50–$99 per hour and 113 reviews.

• Strengths: the lowest Clutch minimum here and the most Clutch reviews in this guide.
• Limitation: fintech is a small part of a broad portfolio, and it names no PCI DSS, SOC 2 or ISO certification. It links to a pricing page I didn’t review.
• Best for: founders testing an investing or crowdfunding idea on a small budget.

10. App369, best for Stripe payments and billing from one developer

App369 is the studio that publishes this guide: one developer, Simon Dziak, in Miami, Florida. He built and runs Workspace369, a live app on iOS and the web that takes payments and subscriptions through Stripe, and has built Stripe payments for client apps, including tap to pay. App369 publishes fixed prices: Stripe Billing Fix and Setup is $950, mobile apps start at $9,000 and web apps at $6,000.

• Strengths: published fixed prices; you work with the person writing the code; Stripe payments and subscriptions running in a live app he owns.
• Limitation: one developer, no SOC 2 report or PCI certificate, and not the right choice for core banking, money transmission or a lending platform.
• Best for: startups and SaaS companies adding Stripe payments, subscriptions or invoicing, or fixing a Stripe setup that is broken.

Side-by-side comparison

Which fintech company fits your situation

How to choose a fintech app development company

1. Ask for a live fintech app. Get a link to a financial product the firm built and still maintains, and ask what it did on it.
2. Ask for the document behind every claim. A SOC 2 report or ISO 27001 certificate has a date and a scope. “Compliant”, “aligned” and “expectations” are not the same thing.
3. Ask who writes the code and where. Get names, seniority and time zone, and whether any work is subcontracted.
4. Settle compliance ownership in writing. Decide who handles PCI DSS scope, data storage, audit logs and your partner bank’s requirements. The PCI Security Standards Council publishes the standard itself.
5. Get a written scope before paying. The vendor evaluation checklist works with any firm on this list, and the app handover checklist shows which accounts should end up in your name.

For budgets, see how much it costs to build an app. For open banking data access, check the current status on the CFPB’s personal financial data rights page before you design it.

Get a price for your fintech project

The instant quote gives a price range for your app in about a minute, and the Stripe Billing Fix and Setup page lists exactly what the $950 covers. Compare either with a written quote from at least one other firm on this list.