Financial apps have to combine a smooth mobile experience with systems that users rarely see: transaction processing, identity verification, permissions, data synchronization, fraud controls, third-party integrations, reporting, and secure cloud infrastructure. In the UK market, development can also involve Open Banking connections, KYC and AML workflows, payment services, investment functionality, and integrations with existing banking or financial platforms.
The companies below work across different parts of fintech mobile development, from consumer banking and digital wallets to investment products, pension platforms, lending systems, payments, and financial management applications. The list combines UK-based development teams with international engineering companies providing fintech and mobile product development across multiple markets.
1. Itexus
Itexus develops custom software for fintech companies, financial institutions, and businesses building digital financial products. Its work covers mobile banking applications, digital wallets, investment and trading platforms, personal finance products, lending systems, payment solutions, and software for wealth management. Mobile products can be built natively with Swift or Kotlin or through cross-platform technologies such as Flutter and React Native.
Itexus also develops the systems surrounding the mobile interface, including backend services, APIs, cloud infrastructure, data pipelines, and administrative platforms. Its fintech engineering work includes Open Banking connections, KYC services, brokerage and exchange APIs, payment integrations, analytics, machine learning, QA, DevOps, and modernization of existing financial applications.
Key Highlights:
- Native and cross-platform financial mobile applications
- Open Banking and third-party financial API integration
- Backend and cloud engineering alongside mobile development
- Experience with banking, payments, lending, investment, and wealth-management products
Services:
- Fintech mobile app development
- Mobile banking software
- Digital wallet development
- Investment and trading platforms
- Payment software development
- Open Banking integration
- KYC and identity verification integration
- Fintech application modernization
Contact Information:
- Website: itexus.com
- E-mail: [email protected]
- Facebook: www.facebook.com/itexus
- Twitter: x.com/ItexusSoft
- LinkedIn: www.linkedin.com/company/itexus
- Instagram: www.instagram.com/itexus.soft
- Address: Żurawia 6/12/lok 766, 00-503 Warszawa, Poland
2. Waracle
Waracle develops mobile and digital products for regulated organizations, with financial services forming one of its core sectors. Its teams work with retail and commercial banking, wealth and investment businesses, insurers, and other financial organizations on customer-facing applications and wider digital platforms.
Waracle’s mobile engineering covers native iOS and Android development as well as cross-platform delivery. Projects can extend beyond application development into product strategy, UX and service design, data engineering, cloud services, technical architecture, testing, and support for digital products operating inside regulated environments. The company has offices in London, Glasgow, Edinburgh, and Dundee.
Key Highlights:
- Mobile development focused on regulated digital products
- Financial-services work across banking, wealth, and insurance
- Native and cross-platform application engineering
- Product, data, cloud, and mobile capabilities within one delivery model
Services:
- Financial mobile application development
- Native iOS and Android engineering
- Cross-platform development
- Digital product design
- Cloud engineering
- Data engineering
- Application modernization
- Product support and optimization
Contact Information:
- Website: waracle.com
- Phone: 0330 808 4436
- E-mail: [email protected]
- Facebook: www.facebook.com/waracle
- Twitter: x.com/WaracleUK
- LinkedIn: www.linkedin.com/company/waracle
- Instagram: www.instagram.com/waracle
- Address: 7 Harp Lane, London, EC3R 6DP
3. Apadmi
Apadmi designs and develops mobile products for banks, fintech businesses, insurers, and wealth-management companies. Its financial-services work covers digital onboarding, account management, payments, investment and trading experiences, authentication, and other customer journeys that increasingly move from branch or desktop systems into mobile channels.
The company combines mobile engineering with product strategy, UX and UI design, backend integration, analytics, platform support, and ongoing optimization. Financial applications can incorporate identity and KYC processes, biometric authentication, payment functionality, and integrations with established financial systems and external technology providers.
Key Highlights:
- Banking and fintech product development
- Digital onboarding and authentication workflows
- Payments, wealth, and trading functionality
- Continued application monitoring and optimization after launch
Services:
- Mobile app strategy
- Financial UX and UI design
- iOS and Android development
- Mobile payment functionality
- KYC and onboarding integration
- Backend system integration
- App analytics and optimization
Contact Information:
- Website: www.apadmi.com
- Phone: +44 (0)208 050 1945
- E-mail: [email protected]
- LinkedIn: www.linkedin.com/company/apadmi-ltd
- Instagram: www.instagram.com/apadmi
- Address: Hamilton House, Mabledon Place, London, United Kingdom, WC1H9BB
4. hedgehog lab
hedgehog lab develops mobile and digital products for financial-services businesses, including applications for investing, portfolio management, banking, and payments. Its teams handle product discovery and design as well as the technical development required to turn financial workflows into mobile services.
The company’s engineering scope includes native and cross-platform applications, backend systems, APIs, and integrations with payment providers, accounting systems, loan-origination platforms, ERP software, and other financial infrastructure. Its fintech portfolio also includes investment products delivered through technologies such as Flutter alongside native mobile development.
Key Highlights:
- Investment and portfolio-management mobile products
- Native and cross-platform financial application development
- API-driven integration with financial and enterprise systems
- Product design integrated with engineering delivery
Services:
- Fintech app development
- iOS and Android development
- Flutter development
- UX and product design
- Payment service integration
- Financial API development
- Backend engineering
- Legacy product modernization
Contact Information:
- Website: hedgehoglab.com
- Phone: 0333 2423132
- Facebook: www.facebook.com/hedgehoglabhq
- Twitter: x.com/hedgehoglab
- LinkedIn: www.linkedin.com/company/hedgehog-lab
- Instagram: www.instagram.com/hedgehog_lab
- Address: 5 St Thomas Street, Newcastle Upon Tyne, NE1 4LE
5. Foresight Mobile
Foresight Mobile develops financial applications from its UK operations in Manchester, Birmingham, and London. The company works on mobile products that handle financial data, account functionality, payments, and other transactional workflows, using native and cross-platform technologies according to the needs of the product.
Its financial app engineering can include Open Banking connections, payment gateways, core banking or ledger integrations, biometric authentication, multifactor authentication, and encrypted data handling. Foresight Mobile works with React Native as well as native iOS technologies and covers design, development, testing, deployment, and continued application support.
Key Highlights:
- Open Banking and financial-system integration
- Biometric and multifactor authentication
- Native and React Native mobile development
- Finance applications developed with security and compliance controls in the delivery process
Services:
- Finance mobile app development
- React Native development
- Native iOS development
- Open Banking integration
- Payment gateway integration
- Core system integration
- Mobile QA and testing
- Application maintenance
Contact Information:
- Website: foresightmobile.com
- Phone: +44(0) 161 552 5498
- E-mail: [email protected]
- Address: Cheadle Place, Stockport Road, Cheadle SK8 2JX
6. Magora
Magora operates a London office and develops custom fintech platforms and mobile applications covering payments, lending, banking, digital wallets, and trading. The company works across both customer-facing interfaces and the backend systems required to process financial data and connect applications with external services.
Its mobile technology stack includes Swift and SwiftUI for iOS, Kotlin and Jetpack Compose for Android, and React Native and Flutter for cross-platform products. Fintech projects can incorporate KYC and AML workflows, card and payment services, Open Banking connectivity, authentication, reporting, and cloud infrastructure.
Key Highlights:
- Native and cross-platform fintech development
- KYC and AML workflow implementation
- Banking, lending, wallet, payment, and trading products
- Open Banking and payment-system integration
Services:
- Fintech software development
- Mobile banking apps
- Digital wallet development
- Lending applications
- Trading platforms
- Payment integration
- KYC and AML implementation
- Cloud and backend development
Contact Information:
- Website: magora-systems.com
- Phone: +44 20 7183 5820
- E-mail: [email protected]
- LinkedIn: www.linkedin.com/company/magora-systems
- Address: Office 4.01, 4th Floor, 56 Shoreditch High St, London E1 6JJ
7. Sonin
Sonin is a UK app development company working with banking, insurance, personal finance, investment, and other regulated financial products. Its development process can cover initial product strategy, user research, UX design, technical architecture, engineering, launch, and continued product development.
Financial projects include mobile account experiences, card-management functions, dashboards, investment and asset-management software, Open Banking connectivity, and B2B financial platforms. Sonin also works with applications operating in FCA-regulated environments, where auditability, data handling, and compliance requirements have to be reflected in product and engineering decisions.
Key Highlights:
- Banking, insurance, investment, and personal-finance applications
- Open Banking functionality
- Development for regulated financial environments
- Consumer and B2B financial product engineering
Services:
- Financial app development
- Mobile product strategy
- UX and UI design
- Open Banking integration
- Investment platform development
- Banking application development
- Technical architecture
- Application support
Contact Information:
- Website: sonin.agency
- Phone: 01737 45 77 88
- E-mail: [email protected]
- Facebook: www.facebook.com/soninapps
- LinkedIn: www.linkedin.com/company/sonin
- Instagram: www.instagram.com/soninapps
- Address: Sonin, 34 Bell Street, Reigate, Surrey, RH2 7SL
8. CoreBlue
CoreBlue is a UK software development company that works on financial products requiring mobile interfaces, backend systems, APIs, and integration with external financial infrastructure. Its delivery process covers discovery, product design, architecture, development, testing, launch, and subsequent product support.
The company’s fintech work includes Flutter-based mobile applications, digital wallet functionality, Open Banking connectivity through platforms such as TrueLayer, electronic KYC processes, transaction workflows, and mobile banking systems. CoreBlue also develops APIs and backend services that connect application interfaces with financial data and operational systems.
Key Highlights:
- Flutter mobile banking and wallet applications
- Open Banking connectivity
- E-KYC and customer onboarding functionality
- Backend and API engineering paired with mobile development
Services:
- Fintech product development
- Flutter app development
- Digital wallet engineering
- Mobile banking development
- Open Banking integration
- Backend development
- API engineering
- Software product discovery
Contact Information:
- Website: coreblue.com
- Phone: +(44) 0330 118 0338
- E-mail: [email protected]
- LinkedIn: www.linkedin.com/company/coreblue
- Address: The Apex, Derriford Business Park, Brest Rd, Plymouth, PL6 5FL
9. Brightec
Brightec develops mobile applications for financial services, including products connected with banking, pensions, investment, accounting, personal finance, and peer-to-peer lending. Its work covers both new mobile applications and further development of products that need additional functionality, interface changes, or technical improvement.
The company handles app strategy, UX and UI, development, integration, testing, deployment, monitoring, and maintenance. Financial projects can include payment functionality, secure authentication, encrypted data handling, analytics, customer account features, and connections between mobile applications and existing business systems.
Key Highlights:
- Banking, pension, investment, and personal-finance applications
- Payment and authentication functionality
- Application accessibility and UX work
- Continued monitoring and maintenance after release
Services:
- Finance app development
- iOS and Android development
- UX and UI design
- Payment integration
- Authentication implementation
- Mobile analytics
- Application maintenance
- Existing app improvement
Contact Information:
- Website: www.brightec.co.uk
- Phone: (+44) 1273 625959
- E-mail: [email protected]
- Address: Unit 1 Ground Floor, Riverside Business Centre, Brighton Road, Shoreham-by-Sea, BN43 6RE
10. The Distance
The Distance is a UK mobile app agency with operations in York and London. Its teams provide product strategy, UX and UI design, mobile engineering, quality assurance, launch support, and ongoing maintenance for consumer and business applications.
The company’s fintech portfolio includes continued mobile product development for PayStream alongside its wider work on consumer and business applications. Engineering can extend from the mobile interface into backend integration, application testing, analytics, release management, and continued product development after launch.
Key Highlights:
- UK mobile product team with York and London presence
- Full product lifecycle from strategy through maintenance
- Cross-platform application engineering
- Fintech product experience alongside broader mobile delivery
Services:
- Mobile app development
- Cross-platform app development
- Product strategy
- UX and UI design
- Backend integration
- Quality assurance
- App maintenance
- Product optimization
Contact Information:
- Website: thedistance.co.uk
- Phone: 01904 21 71 71
- E-mail: [email protected]
- Twitter: x.com/thedistancehq
- LinkedIn: www.linkedin.com/company/the-distance
- Instagram: www.instagram.com/thedistancehq
- Address: 90 York Way, London, N1 9AG
11. Dotsquares
Dotsquares develops financial software across digital banking, mobile banking, payments, wallets, Open Banking, and regulatory technology. Its UK presence includes London and Brighton, with development services covering web, mobile, backend, cloud, and integration work.
Mobile fintech projects can combine customer-facing applications with payment gateways, biometric authentication, financial APIs, real-time account data, transaction functionality, and secure connections to third-party platforms. The company’s broader fintech practice also covers fraud-management solutions, blockchain-related development, and software for financial operations.
Key Highlights:
- Mobile and digital banking development
- Open Banking and payment gateway integration
- Wallet and transaction functionality
- API development for financial platforms
Services:
- Fintech software development
- Mobile banking apps
- Digital wallet development
- Payment gateway integration
- Open Banking solutions
- RegTech development
- Financial API integration
- Fraud-management software
Contact Information:
- Website: www.dotsquares.com
- Phone: +44 208 0901819
- E-mail: [email protected]
- Facebook: www.facebook.com/dotsquaresuk
- Twitter: x.com/dotsquares
- LinkedIn: www.linkedin.com/company/dotsquares
- Instagram: www.instagram.com/dotsquaresltd
- Address: Unit 2, Hobbs Court, 2 Jacob St, London SE1 2BG, UK
12. DigiRyte
DigiRyte is a UK-headquartered software development company working across mobile products and custom digital platforms. Its mobile development covers native and hybrid applications for iOS and Android, while its broader engineering practice includes web systems, backend development, cloud infrastructure, QA, and dedicated development teams.
Its finance engineering also extends into financial-crime and compliance systems, including KYC and AML workflows, transaction analysis, fraud detection, sanctions screening, regulatory reporting, and data integration. These capabilities can be combined with mobile, backend, cloud, and QA work when a financial product extends beyond the application interface.
Key Highlights:
- Native and hybrid iOS and Android development
- KYC, AML, fraud detection, and regulatory workflow engineering
- UK-based product and consulting operation
- Mobile engineering supported by backend, QA, and cloud services
Services:
- Mobile application development
- iOS development
- Android development
- Product engineering
- Software architecture
- Cloud development
- QA and testing
- Dedicated development teams
Contact Information:
- Website: www.digiryte.com
- Phone: +44 (0) 161 706 7983
- E-mail: [email protected]
- Facebook: www.facebook.com/digiryte
- Twitter: x.com/digiryte
- LinkedIn: www.linkedin.com/company/digiryte
- Instagram: www.instagram.com/digiryteuk
- Address: MediaCityUK, Salford, Manchester, United Kingdom.
13. thoughtbot
thoughtbot’s London team works on financial software across mobile applications, payments, lending, banking platforms, and modernization of existing financial systems. Its mobile work includes React Native, native iOS, and Android development alongside product design, backend engineering, and technical architecture.
Its fintech projects include React Native mobile development for Beyond Finance as well as software work with financial organizations such as British Business Bank. Engagements can combine product strategy, mobile UX, application engineering, payment integrations, modernization, testing, and technical support for internal product teams.
Key Highlights:
- London product design and development team
- React Native and native mobile engineering
- Experience with regulated financial software
- Product development combined with engineering consulting and team enablement
Services:
- Fintech product development
- React Native development
- Native iOS and Android development
- Product strategy
- UX and product design
- Software modernization
- Technical consulting
- Engineering team support
Contact Information:
- Website: thoughtbot.com
- Phone: +44 (0)20 3807 0560
14. Tapptitude
Tapptitude is a digital product studio that designs and develops mobile applications through multidisciplinary product teams. Its mobile work includes native iOS and Android development as well as cross-platform applications, supported by backend engineering, cloud infrastructure, API integration, and product design.
Financial product work can combine mobile interfaces with payment functionality, backend services, APIs, cloud infrastructure, and third-party integrations. Projects can move from product definition and prototyping through engineering, release, analytics, and continuous development. Tapptitude also maintains a London presence.
Key Highlights:
- Native and cross-platform mobile product development
- API and third-party service integration
- Backend and payment-system engineering
- Product design and engineering delivered within the same team
Services:
- Mobile app development
- iOS development
- Android development
- Cross-platform development
- Product design
- Backend engineering
- Payment integration
- Product maintenance
Contact Information:
- Website: tapptitude.com
- Phone: +44 20 719 39759
- E-mail: [email protected]
- Facebook: www.facebook.com/tapptitude
- Twitter: x.com/tapptitude
- LinkedIn: www.linkedin.com/company/tapptitude
- Instagram: www.instagram.com/tapptitude
- Address: The Handbag Factory, 3 Loughborough Street, SE11 5RB
15. A-listware
A-listware provides software development services for financial businesses operating across banking, insurance, investment, and other fintech areas. Its engineering capabilities include financial mobile applications, custom fintech platforms, web systems, and software components connecting customer interfaces with financial operations.
Mobile projects can incorporate payment functionality, data exchange with external platforms, backend services, and integrations required to support financial workflows. A-listware also provides dedicated engineering teams, software testing, application support, and modernization services for companies expanding or rebuilding existing digital products.
Key Highlights:
- Mobile applications for financial services
- Banking, investment, and insurance software development
- Payment-related mobile integration
- Dedicated development and support teams
Services:
- Fintech software development
- Financial mobile applications
- Banking software
- Investment software
- Payment integration
- Dedicated development teams
- Software testing
- Application support
Contact Information:
- Website: a-listware.com
- Phone: +44 (0)142 439 01 40
- E-mail: [email protected]
- Facebook: www.facebook.com/alistware
- LinkedIn: www.linkedin.com/company/a-listware
- Address: St. Leonards-On-Sea, TN37 7TA, UK
16. Vention
Vention develops mobile banking and fintech software for organizations serving the UK market. Its financial mobile work covers account management, budgeting, payments, transfers, investments, and other digital banking functionality delivered through native or cross-platform applications.
Projects can also include Open Banking APIs, core banking connections, payment infrastructure, identity and authentication services, backend development, cloud environments, QA, AI functionality, and continued software support. Vention maintains a London office and works with Swift, Kotlin, Flutter, React Native, and supporting backend technologies.
Key Highlights:
- Mobile banking and fintech product engineering
- Native and cross-platform development
- Open Banking and financial-system integrations
- London presence supported by a wider software engineering operation
Services:
- Mobile banking development
- Fintech app development
- iOS and Android engineering
- Flutter development
- React Native development
- Open Banking integration
- Payment integration
- Fintech software support
Contact Information:
- Website: ventionteams.com
- Phone: +442071172842
- E-mail: [email protected]
- Twitter: x.com/ventionteams
- LinkedIn: www.linkedin.com/company/ventionteams
- Instagram: www.instagram.com/ventionteams
- Address: 30 Churchill Place, E14 5RE
Conclusion
Fintech mobile development now covers a broad range of products, from everyday banking and payments to investing, lending, pensions, wealth management, insurance, and digital assets. The underlying engineering can involve native or cross-platform mobile development, financial APIs, cloud infrastructure, identity services, secure backend systems, and extensive integration with existing platforms.
The appropriate development model depends on what already exists and what still needs to be built. New products may benefit from one team handling discovery, mobile UX, backend architecture, and the first production release, while established platforms often require deeper integration, modernization, security work, performance improvements, or continuous development around an existing financial ecosystem.