DeFi Wallet Development Company
We build non-custodial DeFi and Web3 wallets for products that need more than send and receive. Token swaps, on-chain interactions, and protocol connections — on top of a security-first architecture with EVM, Solana, and TRON support. If your users interact with on-chain protocols, the wallet has to be built for it from day one — not patched in later.
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Faster
Protocol Integration
Blockchain
Networks
Faster
Time-to-Market
Web3
Engineers
Core Features
DeFi Wallet Features Built for On-Chain Products
A DeFi wallet isn't a storage tool — it's an on-chain interface. These are the four areas where the implementation either enables your product or quietly breaks it.
Protocol Connection Layer
Users connect to external Web3 protocols directly from the wallet. Session management, request signing, and permission scoping handled correctly across EVM networks.
Gas & Transaction Management
EIP-1559 gas estimation with buffer logic, nonce management, and slippage controls for swap flows. Transactions don't get stuck — and when the network is congested, the wallet handles it without user intervention.
Protocol Interaction Layer
Native support for token swaps, cross-chain bridges, and on-chain approvals — built as structured transaction flows, not raw contract calls. Each interaction is validated before signing to reduce failed transactions.
Token & Approval Management
Automatic token detection across EVM, Solana, and TRON. Full visibility into active contract approvals with revoke functionality — a standard expectation in DeFi products that most wallet implementations skip entirely.
Our Cases
DeFi and Web3 Products We've Shipped
From decentralized exchanges to multi-chain wallets with DeFi integrations — here's what we've built for Web3 teams.
Build Your Wallet With Us
Web3
DEX Aggregator Solution: Custom App Development
DeFi/DEX aggregator dApp offering liquidity and rates across Ethereum, BSC, Optimism, and Polygon—an entry point to the Network ecosystem.
50 K
investments attracted
90 +
liquidity pools
4
months of product development
Crypto
Secure Multi-Chain Crypto Wallet with Fiat Integration and Cross-Chain Trading
Developed a Colombian cross-chain crypto wallet with major blockchain integration, fiat on-ramps, and full app store compliance.
2500 +
hours of development
85 K
Project Budget
7
person expert team
Telegram App
Ouinex Telegram Crypto Trading Bot Development for Effortless and Secure Crypto Trading
Ouinex is a centralized crypto exchange (CEX) focused on transparency, speed, and institutional-grade trading infrastructure.
To make crypto trading more accessible, Ouinex partnered with OmiSoft, a crypto trading bot development company, to build a Telegram-based trading app that allows users to manage accounts, trade, and handle funds without leaving the messenger.
45 %
faster user onboarding
30 %
higher engagement rate
0
security incidents post-launch
What We Do
DeFi & Web3 Wallet Development Services
We cover the full stack — from protocol integrations and smart contract interactions to wallet UI and cross-chain support. Built for teams shipping real DeFi products, not demos.
Discuss Your Project
Protocol Connection & dApp Integration
Support for external Web3 protocol connections — session handling, request signing, and dApp permissions. Users interact with on-chain protocols directly from the wallet without friction or security tradeoffs.
DeFi Protocol Integration
Swap aggregators, lending protocols, liquidity pools, staking contracts — integrated as structured transaction flows with pre-signing validation. We handle the protocol-specific edge cases so your users don't encounter them. For the full chain integration stack, see our blockchain wallet development services.
Multi-Chain Wallet Architecture
Unified wallet core with adapters for EVM networks, Solana, and TRON. One interface across chains — with chain-specific gas models, token standards, and transaction validation handled correctly per network.
Smart Contract Interaction Layer
ABI-based contract calls, approval management, and revoke flows — built with user-readable transaction previews before signing. No raw hex, no guesswork for the end user.
Non-Custodial Security Stack
AES-256-GCM encryption, platform secure storage, biometric authentication, and BIP39 recovery — the same security foundation we ship in production wallets, applied to every DeFi product we build.
Building a DeFi product and need a wallet layer that keeps up?
Web3 Wallet Development
Web3 Wallet Development: Types and Use Cases
Different Web3 products need different wallet models. Here's how each type maps to a real product context.
Why DeFi Teams Choose OmiSoft
DeFi wallet development fails at the protocol layer — not the UI. We've built production wallet infrastructure with real on-chain integrations, and we bring that experience to every project we take on.
Let's Build Your DeFi Wallet.
Max
CTO, Expert in Crypto Wallet Development
FAQ
Frequently asked questions
What is a DeFi wallet and how is it different from a regular crypto wallet?
A regular crypto wallet handles send, receive, and balance display. A DeFi wallet is built for on-chain interactions — token swaps, liquidity pool deposits, on-chain approvals, and direct protocol connections. The difference is in the protocol integration layer, not the UI.
Which DeFi protocols can you integrate?
We integrate swap aggregators, cross-chain bridges, and custom protocol integrations depending on your product requirements. Each integration is built as a structured transaction flow with pre-signing validation.
Which blockchains do you support for DeFi wallet development?
Our production stack covers EVM networks (Ethereum, Polygon, BSC, Base, Arbitrum, Optimism, Avalanche), Solana, and TRON. For DeFi use cases, EVM chains and Solana are the most common. New chains are added via adapter pattern without touching the core wallet logic — for a deeper look at how we integrate each network, see our blockchain wallet development services.
How do users connect to external DeFi protocols from the wallet?
The wallet supports direct connections to external Web3 protocols — session management, request signing, and permission scoping are handled on the wallet side. Users interact with on-chain protocols without leaving the app and without security tradeoffs.
Is a DeFi wallet non-custodial by default?
Yes — in a properly built DeFi wallet, private keys are generated and stored on the user's device. No server holds the keys, and no third party can access funds. This is the standard model for DeFi products where user trust and self-sovereignty are core to the value proposition. See how we implement the full non-custodial wallet security stack.
How are gas fees handled in a DeFi wallet?
We implement EIP-1559 gas estimation with buffer logic for EVM networks, slippage controls for swap flows, and nonce management to prevent stuck transactions. For Solana, priority fees are handled separately. Users see a clear fee preview before signing — no surprises.
Can you build a DeFi wallet with a built-in token swap?
Yes. We integrate swap aggregators directly into the wallet — users swap tokens without leaving the app. Swap flows include slippage settings, price impact warnings, approval management, and transaction status tracking through confirmation.
How long does it take to build a DeFi wallet?
A DeFi wallet with protocol integrations, swap functionality, and multi-chain support typically takes 16–22 weeks for iOS and Android. Timeline depends on the number of protocol integrations, supported chains, and custom UI/UX requirements.
What is the cost of DeFi wallet development?
DeFi wallets start from $55,000 for a production multi-chain build with protocol integrations. Cost scales with the number of supported chains, DeFi protocol depth, and delivery scope. Custom or white-label DeFi wallets are scoped individually.
Can a DeFi wallet be embedded into an existing Web3 product?
Yes. We build embedded wallet layers that integrate into existing apps or platforms — delivered as an SDK or API. The key model, supported chains, and protocol integrations are configured to fit your product architecture.