We architect and build custom blockchain infrastructure tailored to your specific business logic. Our full-cycle development delivers production-ready mainnet deployments within 6-12 weeks, not just proof-of-concepts.
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Mobile-First Cross-Chain Wallet SDK
A complete SDK stack for React Native, Flutter, and native mobile platforms. We deliver a production-ready, battery-efficient wallet for managing multi-chain assets with a seamless UX.
Chainscore © 2026
overview
FULL-STACK ENGINEERING
Custom Blockchain Development
End-to-end blockchain solutions from protocol design to production deployment.
- Smart Contract Systems: Secure
Solidity/Rustdevelopment with formal verification and comprehensive audit trails. - Layer 1 & 2 Solutions: Custom sidechains, app-chains, and zk-rollups for high-throughput applications.
- Node Infrastructure: Bespoke validator networks, RPC endpoints, and indexers with 99.9% uptime SLAs.
- Protocol Upgrades: Seamless hard fork execution and backward-compatible feature integration.
We own the entire delivery lifecycle—from initial white paper to on-chain governance—ensuring your core technology is a competitive asset, not a liability.
key-features-cards
NATIVE SDK ADVANTAGES
Engineered for Mobile Performance
Our Mobile-First SDK is built from the ground up for iOS and Android, delivering the speed, reliability, and seamless UX your users demand. We prioritize native performance over cross-platform compromises.
01
Lightweight Native SDK
A lean, purpose-built SDK for iOS (Swift) and Android (Kotlin). No bulky webviews or runtime penalties. Reduces app size impact and leverages native OS performance for smooth animations and instant response.
< 5 MB
Added App Size
60 FPS
Target UI Performance
02
Optimized for Mobile Networks
Intelligent connection management and data synchronization designed for variable mobile connectivity. Features automatic reconnection, request batching, and offline state caching to ensure wallet functionality anywhere.
< 100 KB
Initial Sync Data
Auto-retry
Network Resilience
03
Battery & Resource Efficient
Engineered to minimize CPU, memory, and battery drain. Our background sync and notification systems use efficient polling and push mechanisms, extending device battery life during active use.
< 1%
Battery Impact /hr
Low Memory
Footprint
04
Seamless Biometric Integration
Deep, secure integration with native biometric systems (Face ID, Touch ID, Android BiometricPrompt). Private keys are secured in platform-specific hardware enclaves (Secure Enclave, KeyStore), never exposed to app memory.
< 200ms
Auth Time
Hardware-backed
Key Storage
benefits
DELIVERING TANGIBLE VALUE
Business Outcomes, Not Just Features
Our Mobile-First Cross-Chain Wallet SDK is engineered to drive specific, measurable results for your business, from user acquisition to revenue growth.
01
Accelerated Time-to-Market
Go live with a production-ready, branded wallet in under 2 weeks. Our modular SDK and pre-built UI components eliminate months of development, allowing you to seize market opportunities faster.
< 2 weeks
To Production
80%
Dev Time Saved
02
Higher User Onboarding & Retention
Reduce user drop-off by 60% with a seamless, intuitive mobile-first experience. Features like social logins, seedless onboarding, and one-click cross-chain swaps dramatically lower the barrier to entry.
60%
Lower Drop-off
3x
Faster Onboarding
03
Enterprise-Grade Security & Compliance
Build trust with institutional and retail users. Our SDK is built on audited code, supports MPC and non-custodial models, and includes tools for regulatory compliance (travel rule, KYC hooks).
SOC 2
Compliant
0
Security Breaches
04
Reduced Infrastructure Cost & Complexity
Eliminate the overhead of managing RPC nodes, gas estimators, and blockchain explorers. Our managed infrastructure handles scaling, uptime, and multi-chain support, so your team can focus on core product.
40%
Lower TCO
99.9%
Uptime SLA
05
Seamless Cross-Chain Expansion
Instantly support 30+ EVM and non-EVM chains (Ethereum, Solana, Polygon, Arbitrum, etc.) without rewriting code. Unlock new user bases and revenue streams from day one.
30+
Chains Supported
0
Code Changes Needed
06
Actionable User Insights & Analytics
Gain deep visibility into wallet activity, transaction flows, and user behavior with built-in, privacy-preserving analytics. Make data-driven decisions to optimize features and drive engagement.
Real-time
Dashboards
Pre-built
Funnels
Tiered SDK Packages
Technical Specifications & Deliverables
Compare our mobile-first cross-chain wallet SDK packages to find the right fit for your project's scale and security requirements.
| Feature / Specification | Starter | Professional | Enterprise |
|---|---|---|---|
Supported Chains | EVM (Ethereum, Polygon, Base) | EVM + Solana + Cosmos | All EVM, Solana, Cosmos, Aptos, Sui |
Multi-Chain Transaction Engine | |||
Biometric & MPC Security | Basic | Advanced (Multi-Party Computation) | Custom MPC + Hardware Security Modules |
Gas Abstraction & Sponsorship | |||
NFT & Token Display Gallery | Basic UI | Advanced Gallery with Rarity | Fully Customizable Gallery UI |
Built-in Fiat On-Ramp (Partner) | MoonPay | MoonPay, Stripe, Ramp | White-label with your preferred providers |
Smart Contract Wallet Support (ERC-4337) | |||
DApp Browser & WalletConnect v2 | |||
Custom Branding & UI Kit | Logo & Colors | Full UI/UX Customization | Dedicated Design Sprint |
Deployment & Integration Support | Documentation | 2 Weeks Engineering Support | Dedicated Technical Account Manager |
Security Audit & Penetration Test | Automated Scan | Manual Code Review + Report | Full Audit by Third-Party Firm (e.g., Quantstamp) |
Uptime & Performance SLA | 99.5% | 99.9% | 99.99% with Financial Credits |
Response Time for Critical Issues | 48 Business Hours | 12 Business Hours | 1 Hour, 24/7 |
Implementation Timeline | 4-6 Weeks | 6-8 Weeks | 8-12+ Weeks |
Starting Price | $25,000 | $75,000 | Custom Quote |
how-we-deliver
PREDICTABLE, TRANSPARENT, AND FAST
Our 4-Week Delivery Process
We deliver a production-ready, mobile-first cross-chain wallet SDK in four structured weeks. This fixed-scope, fixed-timeline approach minimizes your time-to-market and technical risk.
01
Week 1: Architecture & Foundation
We establish the core SDK architecture, select optimal libraries (WalletConnect v2, ethers.js/v5), and define the multi-chain strategy (EVM, Solana, Cosmos). You receive a detailed technical specification and project roadmap.
3+
Chain Integrations Planned
1 week
Architecture Lock
02
Week 2: Core Wallet & Security
Development of secure key management (HD wallets, MPC options), biometric authentication flows, and the foundational UI component library. All security patterns follow OWASP and NIST guidelines.
Zero-Knowledge
Key Storage
Biometric
Auth Support
03
Week 3: Cross-Chain Operations
Integration of bridging protocols (LayerZero, Wormhole), DEX aggregators (1inch, Jupiter), and NFT marketplaces. We implement gas estimation and transaction simulation for a seamless user experience.
< 2 sec
Quote Fetch
5+
Bridge Protocols
04
Week 4: Testing, Audit & Handoff
Rigorous unit/integration testing, penetration testing of the final build, and comprehensive documentation. We deliver a fully audited, white-labeled SDK ready for your App Store submission.
100%
Code Coverage
Audit Report
Security Deliverable
Mobile-First Cross-Chain Wallet SDK
Build vs. Buy: The Chainscore SDK Advantage
A clear comparison of the time, cost, and risk of developing a wallet SDK in-house versus implementing our production-ready solution.
| Key Factor | Build In-House | Chainscore SDK |
|---|---|---|
Time to First Wallet | 6-12 months | 4-8 weeks |
Initial Development Cost | $200K - $500K+ | $25K - $75K |
Security & Audit Burden | High (Your Responsibility) | Pre-Audited, Enterprise-Grade |
Supported Chains (Day 1) | 1-2 (EVM only) | 15+ (EVM, Solana, Cosmos, Bitcoin L2s) |
Key Features (MPC, AA, Gasless) | Requires Separate R&D | Integrated & Configurable |
Ongoing Maintenance & Upgrades | Full Engineering Team | Managed Service (Optional SLA) |
Compliance & Risk (Travel Rule, Sanctions) | Custom Implementation Required | Built-in Modules Available |
Total Cost of Ownership (Year 1) | $300K - $750K+ | $50K - $150K |
Mobile-First Cross-Chain Wallet SDK
Frequently Asked Questions
Get clear answers about our SDK's capabilities, security, and integration process.
For a standard integration with 2-3 target blockchains, typical deployment is 2-4 weeks from project kickoff to production-ready app store submission. This includes core wallet setup, key management, and basic token/NFT support. Complex requirements like custom multi-chain DeFi flows or advanced MPC configurations can extend the timeline, which we scope precisely during discovery.
ENQUIRY
Get In Touch
today.
Our experts will offer a free quote and a 30min call to discuss your project.
NDA Protected
Confidentiality24h Response
Time to ValueDirectly to Engineering Team
No Sales Fluff10+
Protocols Shipped
$20M+
TVL Overall