Specialist development of high-performance, privacy-compliant Mobile SDKs. We build developer tools that engineering teams love to use: cross-platform logic via Kotlin Multiplatform, edge-AI optimisation, and audit-ready compliance documentation.
Foresight Mobile engineers enterprise-grade SDKs using Kotlin Multiplatform (KMP) for shared business logic with native binary interfaces, as well as dedicated SDKs for Flutter, React Native, iOS (Swift Package Manager & CocoaPods) and Android (Maven Central & Gradle).
Kotlin Multiplatform has emerged as the definitive standard for SDK development in 2025. Unlike full cross-platform frameworks, KMP produces standard native binaries (XCFrameworks for iOS and AARs for Android) that integrate directly into any tech stack. Your customers receive a "native-feeling" SDK regardless of whether they're building in Swift, Kotlin, React Native, or Flutter.
If you already have native SDKs for iOS and Android, we can cost-effectively wrap your existing libraries to expand into the cross-platform market. If you're providing a web or REST-based service, we can bring your products to mobile using our SDK development best practices.
Modern SDKs increasingly leverage the device's Neural Processing Unit (NPU) for offline-first intelligence. We integrate Small Language Models (SLMs) and specialised neural networks directly into SDKs using LiteRT (TensorFlow Lite), CoreML, and ExecuTorch. This enables real-time inference, on-device RAG, and privacy-preserving analytics without cloud dependency.
Every SDK release includes automated Software Bill of Materials (SBOM) generation in CycloneDX/SPDX formats, iOS Privacy Manifests for App Store compliance, and security hardening with certificate pinning and obfuscation. We help you meet EU Cyber Resilience Act and GDPR requirements by design.
When distributing iOS SDKs, developers need to understand Apple's distribution requirements. Our comprehensive iOS app distribution guide covers everything from TestFlight beta testing to App Store distribution for SDK developers.
Enterprise SDK engineering with native distribution to Swift Package Manager, CocoaPods, Maven Central, Gradle and NPM
We work with your developer advocates and business development team to actively support the integration process for high-value customers. From white-label SDK customisation to hands-on technical assistance, our team has the experience to accelerate adoption.
We design the business logic behind the code, architecting secure, offline-resilient telemetry for MAU, session, or event-based billing. From usage-based pricing infrastructure to Open Core strategies, we help you define the boundary between community and enterprise features.
We build SDKs that developers champion. Idiomatic APIs with native-feeling syntax for Swift and Kotlin, AI-optimised design for smooth GitHub Copilot integration, comprehensive documentation with copy-paste ready snippets, and frictionless distribution via Swift Package Manager, Maven Central, and npm.
Every release includes automated Software Bill of Materials (SBOM) in CycloneDX/SPDX formats, iOS Privacy Manifests for App Store compliance, and VEX documentation for vulnerability analysis. Certificate pinning, obfuscation, and tamper-detection come standard. Your SDK meets EU Cyber Resilience Act requirements out of the box.
We integrate Small Language Models (SLMs) and neural networks directly into your SDK using LiteRT, CoreML, and ExecuTorch. Enable offline-first AI features (real-time inference, on-device RAG, and predictive analytics) with zero-latency performance and complete data privacy compliance (GDPR/CCPA).
We engineer SDKs using Kotlin Multiplatform (KMP) to share 90-99% of business logic while producing native XCFrameworks for iOS and AARs for Android. Your SDK appears 100% native to developers in any tech stack (Swift, Kotlin, React Native, or Flutter) without imposing runtime overhead or inflating app size.
“They’re more thoughtful than any other development team I’ve worked with..... I’m not sure what they could improve."
"The team has delivered exactly what we asked for but is able to use their own skill and judgment to make improvements"
"Foresight Mobile effectively and promptly met our needs. They were a candid, reliable, and collaborative partner."
A Software Bill of Materials (SBOM) is a formal inventory of every component, library, and dependency in your SDK. Required by regulations like the EU Cyber Resilience Act and US Executive Order 14028, SBOMs provide complete transparency about your software supply chain.
Enterprise customers demand SBOMs (in CycloneDX or SPDX format) to manage security risks. They need to know immediately if a vulnerability like Log4j affects their applications. We also provide VEX (Vulnerability Exploitability eXchange) documents that clarify whether flagged vulnerabilities actually impact your SDK, reducing false positives for your customers' security teams.
iOS Privacy Manifests (PrivacyInfo.xcprivacy) are mandatory declaration files that every SDK must include since Apple's 2024 enforcement. They explicitly declare what data the SDK collects (contact info, location, identifiers) and which "Required Reason APIs" it accesses (disk space, boot time, user defaults).
If your SDK fails to include a valid Privacy Manifest, the entire integrating application faces App Store rejection. This makes Privacy Manifest compliance a non-negotiable requirement for SDK vendors. At Foresight Mobile, we automatically generate Privacy Manifests for every SDK release, ensuring your distribution is never blocked by Apple's review process.
Kotlin Multiplatform (KMP) is a technology that allows SDK developers to write business logic once in Kotlin and compile it to native binaries for multiple platforms. Unlike Flutter or React Native, KMP produces standard XCFrameworks for iOS and AARs for Android that appear 100% native to consuming developers.
For SDK development, KMP solves a critical problem: your iOS customers expect a Swift interface, while Android customers expect Kotlin. KMP delivers both from a single codebase, enabling 90-99% logic sharing without imposing any runtime overhead on the host app. This reduces maintenance costs, ensures consistent behaviour across platforms, and produces smaller binary sizes than alternative cross-platform approaches.
A REST API defines the communication protocol: HTTP methods (GET, POST, PUT, DELETE) for data exchange over the internet. In 2025, APIs typically include GraphQL endpoints, WebSocket connections for real-time data, and OpenAPI specifications for documentation.
An SDK (Software Development Kit) is a complete toolkit that wraps the API with type-safe libraries, authentication handlers, error management, offline caching, and platform-native interfaces. Modern SDKs are designed for AI-assisted development, with idiomatic naming conventions that help GitHub Copilot predict correct usage. While APIs define what is possible, SDKs abstract complexity and accelerate integration. For example, the Stripe SDK handles payment processing complexities (authentication, retries, webhooks, SCA) that would require hundreds of lines of manual API code.
Mobile SDKs in 2025 span diverse categories, increasingly featuring on-device AI capabilities:
A Mobile SDK (Software Development Kit) is a complete toolkit that enables developers to integrate specific functionality into their apps without building from scratch. In 2025, enterprise-grade SDKs go far beyond basic libraries. They include on-device AI capabilities, automated compliance documentation, and "native-feeling" APIs for every platform.
Modern SDKs provide access to device capabilities (camera, GPS, biometrics, NPU), handle complex operations (payments, authentication, analytics), and ensure regulatory compliance. Built with Kotlin Multiplatform for shared logic, they produce native XCFrameworks and AARs that slot directly into any tech stack. Key features include modular architecture for minimal binary size, privacy-preserving on-device processing, and automatic iOS Privacy Manifest generation.
Mobile SDK development costs in 2025 vary based on complexity, compliance requirements, and AI capabilities. Basic SDKs wrapping REST APIs with authentication and offline caching cost £5,000-15,000. Intermediate SDKs with Kotlin Multiplatform shared logic, SBOM generation, and Privacy Manifests range from £25,000-60,000. Enterprise SDKs featuring on-device AI, real-time sync, usage-based metering, and full compliance documentation cost £75,000-200,000+.
Key cost factors include: platform coverage (iOS, Android, Flutter, React Native), on-device AI integration (model optimisation, NPU targeting), compliance requirements (SBOM, VEX, Privacy Manifests), documentation quality, sample applications, and ongoing maintenance. Kotlin Multiplatform can reduce multi-platform costs by 40-60% compared to separate native codebases.
The best apps come from close partnership. You'll work with us as an extension of your team: your vision drives every decision while our mobile app development experience guides you around common pitfalls.
70% of app projects fail due to misaligned expectations and market misunderstanding. The App Gameplan catches these issues before you've committed significant budget.
Start with a 30-minute call. No pressure, no sales pitch. Just an honest conversation about your project.
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Laying the Foundation for Success
It's your concept, your dream. You'll share your vision, target audience, and business objectives. We'll listen, research, and recommend until we've transformed your initial idea into a clearly defined mobile app concept.
You'll get competitive analysis that identifies opportunities and potential challenges. We'll outline key features and create a detailed project roadmap together.
Thorough planning and research are crucial for mitigating risks, ensuring a smooth development process, and maximising your app's chances of success.
Creating an Engaging and Intuitive Experience
Good design drives engagement and retention. You'll work with our in-house designers to map the user journey, ensuring intuitive navigation throughout. We design wireframes and mockups so you can visualise the product before any code is written. Once we've agreed on core functionality, you'll test high-fidelity interactive prototypes on a real device with real users.
You'll validate ideas before committing to development. Interactive prototypes catch usability issues early, when they're cheap to fix.
Building Future-Proof Code You Can Scale
Your design becomes a working app. We use Flutter with industry best practices to build scalable, maintainable code that grows with your business. Easy updates, straightforward feature additions. Every app undergoes rigorous automated and manual testing across multiple devices and platforms before you see it.
Your app won't become technical debt. Our architecture and documentation standards make it a valuable business asset that's cost-effective to maintain and enhance.
Ensuring Long-Term Success Through Partnership
You'll get guidance through App Store submission, ensuring your app meets all requirements and regulations. We work with you on App Store optimisation to increase visibility and drive downloads. After launch, we proactively monitor performance, address issues quickly, and collaborate on updates and enhancements.
Your app's success doesn't end at launch. Ongoing support maximises reach, generates revenue, and builds long-term success.
Your app, your way. Here's how we make it happen.
Our process begins with a comprehensive project plan and a transparent, fixed cost agreement. This ensures you know exactly what you're getting and how much it will cost, eliminating any unwelcome financial surprises. Regular progress calls with live demos give you a front-row seat to your app's development, keeping you informed and involved at every stage.
We're not just here for the build, we're here for the long haul. From navigating the App Store maze to providing ongoing technical support, we're with you all the way. Our expertise doesn't end at launch; we offer cost-effective maintenance plans and helpful guidance to ensure your app continues to thrive and evolve with your business. Your success is our success, and you can count on us every step of the way.
We believe the best apps are born from real user experiences. That's why user testing is at the core of everything we do. We involve real people from your target audience throughout the development process to ensure your app is intuitive, engaging, and truly meets their needs. Their honest feedback helps us to refine and enhance your app, resulting in a product that's not only user-friendly but loved by your users.
You know your business inside and out and we know how to make successful tech businesses. With years of hands-on CTO and app development experience, we're experts at understanding your needs and crafting innovative solutions that fit your budget and exceed expectations. Our collaborative process and hands-on prototyping ensure your final product isn't just an app – it's the realisation of your vision.
Our founder has been making mobile apps since 2003, before they were even called apps! Founded in 2017, we've got quite a few projects under our belt and a wealth of experience to call upon. Our core development team have been with us since the start, and one of the reasons we're considered the most experienced Flutter app development company in the UK.
We believe in the power of face-to-face collaboration. That's why we encourage you to visit us at our Manchester offices whenever you like. We're a friendly bunch, and we thrive on the energy and clarity that comes from an in-person chat. Building strong relationships is key to our collaborative approach, and we want you to feel comfortable dropping by for a brainstorming session, or just for a brew if you fancy.
