Viacheslav Kostin
CEO WislaCode Solution
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Cross-platform App Development
WislaCode specialises in developing applications that run seamlessly on all major mobile operating systems. We create platform‑agnostic solutions that deliver consistent performance across devices, as well as hybrid applications that blend the advantages of native and web technologies.
Applications for all mobile operating systems
Looking to reach a broader audience?
WislaCode delivers cross‑platform mobile apps designed to work flawlessly on a wide range of devices while maintaining strong usability and performance.
Our mobile apps are built using programming languages and frameworks tailored to your project’s needs and the target platforms. From fintech and banking to entertainment and automotive, mobile applications have become indispensable tools for engagement and productivity.
Strategy‑first delivery: We begin with clear outcomes, user segments and priority journeys. Discovery covers regulatory needs, third‑party integrations and risks, so your cross‑platform roadmap targets the features that prove value fastest across iOS and Android.
Scalable app architecture: We design for growth from day one with clean module boundaries, API‑first services and offline‑first patterns where useful. This makes it straightforward to add features, integrate partners and handle traffic peaks without costly rewrites.
AI‑powered development: We apply AI where it improves outcomes – personalised content, document capture, anomaly detection and recommendations. Guardrails, monitoring and fallbacks keep experiences reliable and compliant while speeding up delivery.
Analytics built in: Instrumentation ships with the first release. Events, funnels and cohorts show adoption, drop‑offs and performance by device and OS, guiding iteration with evidence rather than assumptions.
Roadmap for cross‑platform application development
We begin by analysing your business goals and app requirements. This includes defining your target audience, core features and key user journeys. Based on this, we select the most suitable tech stack to achieve your vision.
A clear roadmap is essential. We break delivery into manageable sprints, set timelines and allocate resources to ensure a smooth workflow with transparent progress tracking.
Our designers craft intuitive, visually engaging interfaces. We prioritise user‑centred design to deliver an experience that aligns with your brand and resonates with your audience.
Our team writes robust, clean source code using modern tools and methods. Whether hybrid or fully cross‑platform, we engineer for scalability, performance and security.
Comprehensive testing runs at every stage, including functional, usability, performance and security checks. Issues are identified and resolved early to ensure a reliable app for end users.
When the app is ready, we handle deployment to app stores or your chosen distribution platform. We provide full ownership transfer and support for a smooth handover.
How Are Cross-platform App Development Developed Step by Step?
We take time to understand your business so that cross‑platform app development aligns with your goals and exceeds customer expectations. Strategic planning ensures every app is both practical and innovative.
Planning
Analysis
Every app undergoes rigorous testing to ensure functionality, performance, security and user satisfaction. Our focus on quality guarantees dependable, efficient and secure solutions tailored to your audience’s needs.
Testing
UX Research
Our solutions can be built with a microservices‑based architecture where appropriate, enabling seamless scalability and future‑proofing your IT landscape. As your business grows, your app evolves without limitation.
Design
Development
We do more than build your application – we ensure it is ready for launch, optimised for scaling and supported for long‑term operation. From start to finish, WislaCode is with you every step of the way.
Launch
Support
Case: Cross‑platform app adopted by 700k+ users
A bank set out to replace basic mobile features with a full digital experience – onboarding, identity checks, everyday payments and self‑service, all online.
We delivered a cross‑platform app with secure authentication, smooth account opening and high‑performing payments. Integrations covered core banking, identity, cards and notifications.
The result: more than 700,000 customers now use the app, with strong engagement and a foundation for rapid feature releases.
Why WislaCode?
We build once and deliver consistently across iOS and Android using modern frameworks. Performance budgets, accessibility and device capabilities are first‑class requirements, so experiences feel fast and native – whether fintech, mobility or enterprise.
Domain depth
Threat modelling, secure storage, transport encryption and least‑privilege access are standard. We minimise data collection, implement consent flows and keep audit trails tamper‑evident. Third‑party SDKs are vetted and monitored.
Secure by design
Stable API contracts and lightweight adapters connect apps to identity, payments, mapping, telematics and ERP/CRM. Event‑driven syncing and robust error handling preserve data integrity and uptime while features roll out.
Integration without friction
Modular architecture microservices where justified – allows teams to extend, swap or retire components cleanly. Documentation, runbooks and knowledge transfer make ongoing ownership straightforward for your developers.
Built to evolve
Some Customer Reviews
WislaCode developers are dedicated to each project. They work hard to deliver results quickly.
Aleksei Malenkin, $lana (Monetech)
5
WislaCode specialists quickly synchronised and worked with the second team involved in developing our solution.
As a result, having started development from scratch, we came to the expected result quickly. The first users went to the application after 5 months.
Read the full review
FAQ About cross-platform app development
We assess required device features, performance targets, offline needs and release cadence. If you need near‑native performance with a shared codebase, a modern cross‑platform framework fits well. If rapid web reach and cost control are priorities, a PWA or hybrid can be faster. We model trade‑offs for maintainability, performance and total cost before recommending.
Often yes, provided scope is focused and integrations are clear. We target a first value slice with secure authentication, one or two core journeys and basic analytics. Rich device features or multiple providers can extend timelines, but we still ship in increments to validate early and de‑risk later work.
We set performance budgets, profile on target devices and optimise rendering, network calls, caching and asset delivery. Offline‑first patterns reduce latency on poor connections. Continuous monitoring tracks cold starts, frame drops and API latency by OS and device model to catch regressions quickly.
Security is embedded: encrypted transport, secure storage, certificate pinning where appropriate and strict session management. We apply least‑privilege access, minimise data collection and document consent and retention policies. Dependencies are scanned in CI/CD, and SDKs are reviewed for risk and data sharing.
Yes. We prepare listings, meet policy requirements and automate build and release pipelines. Feature flags enable staged rollouts; telemetry informs when to widen distribution. We also support enterprise distribution where relevant and manage update cadences aligned to your release strategy.
We use well‑maintained SDKs with clear contracts. Where native modules are required, we encapsulate them behind stable interfaces so shared code remains clean. Contract tests and test doubles protect against provider changes and OS updates, keeping delivery predictable.
Absolutely. We co‑build with shared backlogs, coding standards and CI pipelines. Clear ownership, documentation and interface contracts keep teams aligned. We run knowledge‑transfer sessions to ensure your developers can operate and extend the app confidently after launch.
We scale horizontally, optimise hot paths and apply smart caching. Observability guides capacity planning, while feature toggles allow progressive enhancements. We prioritise improvements that lift activation and retention, and trim underused features to keep the app lean and maintain strong performance.
Viacheslav Kostin, CEO
20+ years of experience in managerial positions in IT and banking.
Viacheslav Kostin, CEO
Previous roles: CEO in IT, Director of Strategy and Marketing in Banking, Curator of Holding Banks, Head of Products and Project Office.
Education: MBA for Executives at IMD (Switzerland), Leading Digital Business Transformation (IMD). Provides consulting in strategy and digital transformation.
Vasil Pahomov, CTO
20+ years of experience as a developer, analyst, and solutions architect.
Vasil Pahomov, CTO
Designs resilient, high-load systems with multiple integrations for banks and financial institutions. Expertise in distributed storage and microservices architecture.