Custom Wallet Development: Securely Connect Your Users to Web3
Build a secure, scalable, and intuitive gateway to the decentralized world.
We deliver feature-rich crypto wallets that inspire user trust and drive ecosystem adoption.
Trusted by Global Leaders and Innovative Startups
Why Partner with Errna for Wallet Development?
In the world of digital assets, a wallet is more than just a tool; it's the foundation of user trust and the primary gateway to your ecosystem. Choosing the right development partner is critical. We combine deep security expertise with a user-centric design philosophy to build wallets that are not only safe but also a delight to use.
Unbreakable Security
We build with a security-first mindset, implementing multi-layered defenses like MPC, multi-sig, and hardware integration to protect assets against all threat vectors.
Cross-Chain Expertise
Your users need flexibility. We build wallets that seamlessly connect to multiple blockchains, enabling easy management of a diverse portfolio of digital assets.
User-Centric Design
A complex wallet is an unused wallet. Our UI/UX experts design intuitive interfaces that simplify complex actions, ensuring high adoption and user satisfaction.
Compliance-Ready Architecture
Navigate the complex regulatory landscape with ease. We integrate robust KYC/AML solutions and design wallets that adhere to global financial compliance standards.
Scalable Infrastructure
From a thousand users to millions, our wallets are built on scalable architecture that grows with your user base without compromising performance or security.
Accelerated Time-to-Market
Leverage our modular components and proven development frameworks to launch your custom wallet faster, gaining a critical first-mover advantage.
End-to-End Partnership
We're more than just developers. From initial strategy and design to post-launch support and maintenance, we are your dedicated long-term partner.
Proven Track Record
With CMMI Level 5 maturity and a portfolio of successful enterprise projects, we bring a level of process excellence and reliability that de-risks your investment.
AI-Enhanced Security
Stay ahead of emerging threats. We integrate AI-powered transaction monitoring and anomaly detection to provide proactive security for your users' funds.
Our Comprehensive Wallet Development Services
We offer a full spectrum of wallet development services, designed to meet the unique needs of your project. Whether you're launching a new DeFi protocol, an NFT marketplace, or integrating crypto into an existing enterprise application, we have the expertise to build your perfect solution.
Custom Crypto Wallet Development
We build bespoke wallet solutions from the ground up, tailored precisely to your business logic, security requirements, and brand identity for a truly unique user experience.
- Full control over features, security, and UI/UX.
- Architecture designed for your specific use case.
- Proprietary ownership of the entire codebase.
Multi-Currency Wallet Development
Empower your users to manage a diverse range of cryptocurrencies and tokens from a single, unified interface, enhancing convenience and platform stickiness.
- Support for Bitcoin, Ethereum, EVM chains, Solana, and more.
- Real-time portfolio tracking and value aggregation.
- Simplified asset management for a superior user experience.
Mobile Wallet App Development (iOS & Android)
Engage users on the go with secure and intuitive native mobile wallet applications. We build high-performance apps that offer a seamless experience on any device.
- Native development for optimal performance and security.
- Biometric authentication and secure enclave integration.
- Push notifications for transactions and alerts.
Web3 Browser Extension Wallets
Create the next MetaMask. We develop powerful and secure browser extension wallets that serve as the primary gateway for users to interact with dApps across the Web3 ecosystem.
- Seamless dApp connectivity and transaction signing.
- Secure key management within the browser environment.
- Support for multiple networks and custom RPCs.
DeFi Wallet Development
Build a wallet that is the command center for decentralized finance. We integrate features for staking, yield farming, lending, and liquidity provision directly into the wallet.
- Integration with major DeFi protocols (Aave, Uniswap, etc.).
- Dashboard for tracking rewards, APYs, and positions.
- Secure and intuitive interface for complex DeFi interactions.
NFT Wallet & Marketplace Integration
Provide a visually rich experience for NFT collectors. Our wallets feature beautiful galleries for displaying NFTs and seamless integration with major marketplaces.
- Support for ERC-721, ERC-1155, and other NFT standards.
- Rich media display for images, videos, and 3D models.
- In-app connectivity to OpenSea, Rarible, and your own marketplace.
Custodial & Non-Custodial Wallet Solutions
Choose the architecture that fits your business model. We develop both fully non-custodial wallets for maximum user sovereignty and secure custodial solutions for streamlined user onboarding.
- Non-custodial wallets give users full control of their private keys.
- Custodial wallets simplify user experience with familiar login methods.
- Hybrid solutions offering the best of both worlds.
Desktop Wallet Applications
Offer a powerful, feature-rich wallet experience for professional traders and power users with a dedicated desktop application for Windows, macOS, and Linux.
- Enhanced security features and hardware wallet support.
- Advanced trading and portfolio management tools.
- Full node integration for maximum privacy and decentralization.
White-Label Wallet Solutions
Launch your branded crypto wallet quickly and cost-effectively. Our production-ready white-label solution can be customized with your branding and deployed in weeks, not months.
- Drastically reduced development time and cost.
- Proven, secure, and scalable core architecture.
- Customizable UI and feature set to match your brand.
Wallet Security Audits & Upgrades
Ensure your existing wallet infrastructure is ironclad. Our security experts conduct comprehensive audits to identify vulnerabilities and implement upgrades to protect against new threats.
- Penetration testing and code review.
- Smart contract audit for wallet-related contracts.
- Implementation of modern security standards like MPC.
On/Off-Ramp Integration Services
Create a seamless user journey by allowing users to buy and sell crypto with fiat currency directly within your wallet, dramatically improving user onboarding and retention.
- Integration with leading providers like MoonPay, Stripe, and Wyre.
- Global coverage for various currencies and payment methods.
- Compliance with local regulations for fiat transactions.
AI-Powered Fraud Detection for Wallets
Implement a proactive layer of security with our AI models that analyze transaction patterns in real-time to detect and flag suspicious activity, preventing fraud before it happens.
- Real-time monitoring of outgoing and incoming transactions.
- Detection of phishing attempts, address poisoning, and other scams.
- Machine learning models that adapt to new threat vectors.
Types of Wallets We Build
Every project has unique requirements. We have deep expertise in building a wide variety of wallet types, ensuring your solution is perfectly aligned with your platform's goals and user expectations.
Mobile Wallets
Secure and convenient iOS & Android apps for users who need access to their assets anytime, anywhere.
Desktop Wallets
Feature-rich applications for power users and traders who require advanced functionality and security.
Web Wallets & Extensions
Browser-based wallets and extensions that provide a seamless bridge for interacting with dApps and Web3.
Hardware Wallet Integration
Software interfaces that connect with hardware wallets like Ledger and Trezor for ultimate cold storage security.
Our Proven Wallet Development Process
We follow a structured, agile methodology to ensure transparency, efficiency, and a final product that exceeds your expectations. Our process is designed to de-risk development and deliver a secure, high-quality wallet on time and on budget.
1. Discovery & Strategy
We start by understanding your vision, target audience, and business goals. We define the core features, security requirements, and create a detailed project roadmap.
2. UI/UX Design & Prototyping
Our design team creates intuitive wireframes and high-fidelity prototypes. We focus on creating a seamless user journey that simplifies complex blockchain interactions.
3. Secure Architecture & Development
Our architects design a robust and scalable backend. Our developers then build the wallet's core components, implementing security best practices at every stage.
4. Rigorous Testing & QA
We conduct extensive testing, including unit tests, integration tests, and full-scale penetration testing, to identify and eliminate any potential vulnerabilities.
5. Deployment & Launch
We manage the entire deployment process, including submission to app stores and server configuration, ensuring a smooth and successful launch.
6. Post-Launch Support & Maintenance
Our partnership doesn't end at launch. We provide ongoing support, security updates, and maintenance to ensure your wallet remains secure and performs optimally.
Our Technology Stack & Security Focus
We use a modern, robust technology stack to build secure and scalable wallet solutions. Our expertise spans multiple blockchains, programming languages, and security protocols.
Success Stories in Wallet Development
The Challenge
The client needed to offer crypto services without forcing their non-technical user base to manage private keys. The solution required bank-grade security, full regulatory compliance (KYC/AML), and seamless integration with their existing fiat-based systems.
Key Challenges:
- Implementing institutional-grade security for a custodial environment.
- Ensuring full compliance with financial regulations.
- Creating a simple, intuitive user experience for crypto newcomers.
- Integrating blockchain transactions with a traditional financial ledger.
Our Solution
We designed and developed a secure, scalable custodial wallet platform. The solution leveraged Hardware Security Modules (HSMs) for cold storage of the majority of funds and a multi-signature hot wallet system for liquidity.
- Developed a robust key management system using HSMs and MPC technology.
- Integrated with a leading KYC/AML provider for automated user onboarding and transaction monitoring.
- Built a simple API layer to connect the wallet system to the client's existing mobile and web apps.
- Created an administrative dashboard for managing liquidity, monitoring transactions, and handling compliance reporting.
The Challenge
The client's success depended entirely on user adoption. They needed a non-custodial mobile wallet that made it incredibly simple for users to connect, stake their assets, and manage their rewards. The wallet had to be highly secure and interact flawlessly with their custom smart contracts.
Key Challenges:
- Designing an intuitive interface for complex staking and unstaking processes.
- Ensuring robust security for a non-custodial wallet where users control their keys.
- Building reliable connectivity with their specific set of smart contracts.
- Optimizing for low gas fees on the Polygon network.
Our Solution
We developed a native mobile wallet for iOS and Android using React Native. The wallet provided a seamless user experience, abstracting away the complexities of DeFi. We implemented WalletConnect for dApp interaction and built a custom dashboard to display staking rewards in real-time.
- Created a secure, on-device key generation and storage mechanism.
- Designed a "one-click" staking feature that bundled multiple transactions into a single user action.
- Developed a real-time dashboard showing APY, total staked assets, and accumulated rewards.
- Conducted a thorough security audit of the wallet and its interaction with the client's smart contracts.
The Challenge
The client was struggling with fraud, delays, and lack of real-time visibility in their supply chain. They wanted to use a private Hyperledger Fabric blockchain to create an immutable record of an asset's journey, and they needed a secure wallet for stakeholders to interact with the system.
Key Challenges:
- Creating a wallet for a permissioned, non-public blockchain.
- Managing identities and access controls for different stakeholders (e.g., manufacturer, shipper, customs).
- Integrating with existing IoT devices for real-time data updates.
- Ensuring the solution was scalable to handle thousands of shipments daily.
Our Solution
We developed a custom web-based wallet application designed specifically for the client's Hyperledger Fabric network. The wallet served as an identity and transaction portal for authorized participants in the supply chain.
- Built a role-based access control system, ensuring participants could only perform authorized actions.
- Developed functionality to create, transfer, and update non-fungible tokens (NFTs) representing each shipment.
- Integrated with the client's IoT platform to automatically trigger blockchain transactions based on real-world events (e.g., a package arriving at a port).
- Created a detailed, auditable history of every asset, accessible directly through the wallet interface.
What Our Clients Say
"The non-custodial wallet Errna built for our DeFi protocol is flawless. It's intuitive, secure, and has been a major driver of our platform's adoption. Their team truly understands the Web3 space."
"Integrating crypto into our FinTech app was a massive undertaking. Errna's expertise in building secure, compliant custodial wallets was a game-changer. They delivered on time and exceeded our expectations."
"We needed an enterprise-grade wallet for a private blockchain, and Errna delivered. They understood our complex requirements for identity and access control and built a solution that has significantly improved our supply chain transparency."
"As an NFT artist collective, we needed a wallet that could beautifully showcase our work. The team at Errna designed a visually stunning and highly functional NFT wallet that our community loves."
"The white-label wallet solution allowed us to get to market in record time. It's robust, secure, and was easy to customize with our branding. The ROI has been fantastic."
"The security audit Errna performed on our existing mobile wallet was incredibly thorough. They identified critical vulnerabilities we had missed and helped us implement the necessary upgrades. I can't recommend them enough."
Ready to Build Your Gateway to Web3?
Your wallet is the most critical touchpoint for your users. Let's build one that's secure, beautiful, and drives the growth of your ecosystem. Schedule a free, no-obligation consultation with our wallet development experts today.
Schedule Your Free ConsultationFrequently Asked Questions
A non-custodial wallet gives the user full control over their private keys and, therefore, their funds. They are solely responsible for securing their keys. A custodial wallet is one where a third party (like an exchange) holds the private keys on behalf of the user. This is more convenient for beginners but involves trusting the custodian with your assets.
The timeline varies depending on the complexity. A simple, single-currency mobile wallet might take 3-4 months. A complex, multi-currency, cross-chain wallet with DeFi integrations could take 6-9 months or more. Our white-label solutions can be deployed much faster, often within 4-6 weeks.
Security is our top priority. We employ a multi-layered approach including secure coding practices (OWASP standards), encryption of all sensitive data, secure on-device key storage, biometric authentication, and options for multi-signature and MPC architecture. We also conduct rigorous internal and third-party security audits and penetration testing before launch.
Absolutely. We specialize in integrations. We can connect your wallet to decentralized exchanges (DEXs), centralized exchanges, and on/off-ramp providers (like MoonPay or Stripe) to allow users to easily buy, sell, and trade assets directly from the wallet interface.
We offer comprehensive support and maintenance packages. This includes 24/7 technical support, regular security updates to patch new vulnerabilities, blockchain node maintenance, and ongoing feature enhancements to keep your wallet competitive and secure.