We architect and deploy custom Solidity and Rust smart contracts with enterprise-grade security as the foundation. Every contract undergoes formal verification and third-party audits before mainnet deployment.
LABS
Services
Cross-Chain Bridge Mobile-First PWA Development
We build Progressive Web Applications that deliver a native mobile experience for cross-chain transactions, with offline capabilities and push notifications, directly from a browser.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, audited smart contract systems built for production and scale.
- Custom Logic: Build bespoke DeFi primitives, NFT mechanics, or governance systems.
- Gas Optimization: Achieve up to 40% lower transaction costs through expert optimization.
- Security-First: Implementation of
OpenZeppelinstandards and comprehensive test suites. - Full Lifecycle: Development, auditing, deployment, and upgrade management via transparent proxies.
Deliver a production-ready, audited contract suite in as little as 4 weeks, from specification to mainnet launch.
key-features-cards
ENGINEERED FOR SCALE
Core Features of Our Cross-Chain Bridge PWA
We deliver production-ready, mobile-first bridge applications that prioritize security, speed, and seamless user experience. Each feature is designed to accelerate your time-to-market and reduce operational overhead.
01
Multi-Chain Wallet Integration
Seamless, non-custodial connection for MetaMask, WalletConnect, and Coinbase Wallet. Supports EVM chains (Ethereum, Polygon, Arbitrum) and non-EVM chains (Solana, Cosmos) via dedicated adapters.
12+
Wallets Supported
15+
Chain Integrations
02
Gas-Optimized Cross-Chain Swaps
Intelligent routing via LayerZero, Axelar, and Wormhole with real-time fee estimation. Our algorithms minimize gas costs and slippage for end-users by up to 40% compared to public bridges.
< 60 sec
Avg. Bridge Time
40%
Avg. Gas Savings
03
Enterprise-Grade Security & Audits
All bridge logic and smart contracts undergo rigorous audits by firms like CertiK and Hacken. We implement multi-sig governance, rate limiting, and real-time threat monitoring as standard.
3+
Security Audits
24/7
Monitoring
04
Progressive Web App (PWA) Architecture
Native-like mobile experience with offline functionality, push notifications for transaction status, and instant installation. Achieves Lighthouse scores >90 for performance and accessibility.
> 90
Performance Score
< 3 sec
Load Time
05
Custom Token Bridge & Liquidity Pools
White-labeled bridge front-end with support for your native token. We configure and deploy secure liquidity pools or integrate with existing DEXs to ensure smooth asset transfers.
2 weeks
Avg. Setup Time
ERC-20/721
Token Standards
06
Real-Time Analytics Dashboard
Comprehensive admin dashboard to monitor bridge volume, user activity, fee revenue, and security events. Export data via API for integration with your existing BI tools.
99.9%
Data Uptime SLA
Real-time
Metrics
benefits
TANGIBLE RESULTS
Business Outcomes: Why a Mobile-First PWA Wins
Building a cross-chain bridge as a Mobile-First Progressive Web App (PWA) delivers measurable advantages over traditional web or native app approaches. Here’s what our clients achieve.
01
Faster User Acquisition & Onboarding
Eliminate app store friction. Users access your bridge instantly via a browser link, leading to sign-up conversion rates 3-5x higher than native apps. No downloads, no updates.
3-5x
Higher Sign-up Rate
0
App Store Friction
02
Seamless Cross-Chain Experience
Deliver a unified, app-like interface for bridging assets between Ethereum, Polygon, Arbitrum, and other EVM chains. Users manage multi-chain portfolios from a single, installable PWA.
1
Unified Interface
EVM+
Chain Support
03
Reduced Development & Maintenance Cost
Build once, deploy everywhere. A single PWA codebase runs on iOS, Android, and desktop, reducing initial development time by ~40% and cutting long-term maintenance overhead.
~40%
Faster Build Time
1 Codebase
All Platforms
04
Enhanced Security & Trust
PWAs run in secure, sandboxed browser environments. We integrate hardware wallet support (WalletConnect, MetaMask Mobile) and implement MPC-based transaction signing for superior key management.
Hardware
Wallet Support
MPC
Signing Options
05
Offline-First & Reliable Performance
Core app shell and UI cache locally, ensuring functionality during spotty connectivity—critical for DeFi. Achieve near-native performance with sub-3 second load times after first visit.
< 3s
Subsequent Load
Offline
Core UI
06
Direct User Engagement & Analytics
Bypass app store restrictions on push notifications. Re-engage users directly with bridge status updates, promotion alerts, and security notices, driving higher retention.
Direct
Push Channels
Full-funnel
Analytics
Choosing the Right Mobile Strategy for Your Cross-Chain Bridge
PWA vs. Native App vs. Mobile Web: A Strategic Comparison
Selecting the optimal mobile delivery method is critical for user adoption and performance. This table compares the key technical and business factors for deploying a cross-chain bridge interface.
| Feature / Consideration | Progressive Web App (PWA) | Native Mobile App | Mobile Web (Responsive) |
|---|---|---|---|
Development Time & Cost | 2-4 weeks ($25K-$50K) | 8-16 weeks ($80K-$150K) | 1-2 weeks ($10K-$20K) |
User Installation | Add to Home Screen (No Store) | App Store / Play Store Required | Browser Only |
Performance (Bridge TX Speed) | Near-Native, <3s load | Optimal, <2s load | Variable, 3-8s load |
Offline & Push Notifications | Yes (Service Workers) | Full Native Support | No |
Cross-Platform Support | iOS, Android, Desktop (Single Codebase) | Separate iOS & Android Codebases | iOS, Android, Desktop (Single Codebase) |
Wallet Connectivity | WalletConnect, Injected (e.g., MetaMask Mobile) | WalletConnect, Deep Linking | WalletConnect, Injected |
App Store Compliance & Fees | Bypassed | Required (Review, 15-30% Fees) | Bypassed |
Discoverability & User Friction | High (Direct Link, Shareable) | Medium (Store Search) | High (Direct Link, SEO) |
Maintenance & Updates | Instant Deployment | Store Review Delays (Days) | Instant Deployment |
Recommended For | Fastest MVP, Broadest Reach, Lower Cost | Maximum Performance, Complex Features | Proof-of-Concept, Supplemental Interface |
how-we-deliver
TRANSPARENT & PREDICTABLE
Our Development Process: From Concept to Live PWA
A structured, six-phase methodology designed for technical founders to deliver secure, scalable cross-chain mobile PWAs with clear milestones and guaranteed outcomes.
01
Phase 1: Discovery & Architecture
We conduct a technical deep-dive to define your target chains (EVM, Solana, Cosmos), user flows, and security requirements. Deliverables include a finalized tech stack (e.g., Axelar vs LayerZero), smart contract architecture, and a detailed project roadmap.
1-2 weeks
Duration
Architecture Doc
Key Deliverable
02
Phase 2: Core Bridge & Smart Contract Development
Our engineers build and unit-test the core bridging logic and secure smart contracts in Solidity/Rust. This includes asset wrapping, message passing, and fee mechanisms, developed with OpenZeppelin libraries and security-first patterns.
3-5 weeks
Duration
Gas-Optimized
Focus
03
Phase 3: PWA Frontend & Wallet Integration
Development of the responsive, mobile-first Progressive Web App interface. We integrate WalletConnect v2, dynamic fee estimation, real-time transaction status, and chain switching for a seamless native-like user experience.
2-4 weeks
Duration
PWA Core
Deliverable
04
Phase 4: Security Audit & Penetration Testing
All bridge contracts and critical frontend logic undergo rigorous internal review followed by a formal audit from a top-tier third-party firm. We provide a full vulnerability report and remediation before any deployment.
2-3 weeks
Duration
Audit Report
Key Deliverable
05
Phase 5: Testnet Deployment & Staging
Full deployment to designated testnets (e.g., Sepolia, Solana Devnet). We conduct integration testing, load testing under simulated traffic, and a closed beta with your team to validate all user journeys and security measures.
1-2 weeks
Duration
Staging URL
Deliverable
06
Phase 6: Mainnet Launch & DevOps
We manage the coordinated mainnet deployment of smart contracts and PWA infrastructure. Post-launch, we provide 24/7 monitoring, incident response, and detailed analytics dashboards for transaction volume and bridge health.
1 week
Go-Live
99.9% SLA
Post-Launch Uptime
tech-stack
BUILT ON PROVEN INFRASTRUCTURE
Technology & Protocols We Integrate
We build your cross-chain bridge PWA on battle-tested, industry-standard protocols and security-first frameworks to ensure reliability, speed, and seamless user experience from day one.
Technical & Commercial Insights
Frequently Asked Questions on Cross-Chain Bridge PWAs
Get clear answers on timelines, costs, security, and our development process for building a production-ready cross-chain bridge Progressive Web App.
We deliver a production-ready, audited MVP in 4-6 weeks for a standard two-chain bridge with core swap functionality. Complex multi-chain deployments with advanced features (e.g., staking, governance) typically take 8-12 weeks. This includes design, smart contract development, PWA frontend, security audits, and deployment.
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