DApps Built Wallet-Integrated
Smart contracts, React frontend, and wallet integration — owned by one team. DeFi, NFT, DAO, and custom protocols shipped to mainnet. No integration gaps.
Full-Stack Record
Zero ABI mismatches shipped to mainnet
Across all mainnet deployments since our first in 2021
300+
Wallets
WalletConnect ecosystem
8+
Chains
ETH, Polygon, Base…
15+
Subgraphs
The Graph deployed
100%
Full-Stack
Contracts + frontend
Wallet support
MetaMask + Browser
Most common
WalletConnect v2
300+ mobile wallets
Coinbase Wallet
Coinbase ecosystem
Ledger + Safe (Gnosis)
Hardware + multi-sig
What We Build
Every type of decentralized app
One team owns the full stack — contracts, frontend, and data layer — for all of these.
DeFi Protocols
AMMs, lending/borrowing, yield aggregators, liquid staking — real-time price feeds, position management, transaction history, and gas-optimized interactions.
NFT Marketplaces
Mint pages, gallery views, listing, bidding, royalty enforcement — connected to ERC-721/1155 contracts with IPFS metadata and lazy minting.
DAO Dashboards
On-chain governance interfaces — proposal creation, voting, execution status, and treasury views. Compatible with Governor Bravo, OpenZeppelin, and custom governance.
Token Launch Apps
IDO / presale pages, vesting dashboards, staking interfaces, and claim portals — everything a token launch needs from day one to TGE.
Web3 Games
On-chain asset ownership, marketplace integrations, tournament contracts — game logic on-chain where it matters, off-chain where performance requires it.
Custom Protocols
Escrow, tokenized real-world assets, decentralized identity, provenance tracking, and revenue sharing — any trustless workflow with a production frontend.
Building something that doesn't fit a category?
Describe your protocolWhy dApps fail before users show up
Most Web3 products fail on UX and integration — not the smart contract logic. Here's how we prevent each failure mode.
Broken Wallet UX Kills Conversion
Most Web3 products lose 60–80% of users at the wallet connection step. Confusing modal flows, no mobile support, missing Ledger or Safe integration, and generic error messages ('transaction failed') send users straight to a competitor. First-time crypto users should never see a raw hex error.
Our approach
RainbowKit or ConnectKit for clean, branded wallet connection. MetaMask, WalletConnect (300+ wallets), Coinbase Wallet, Ledger, and Safe all supported. Mobile-responsive flows with human-readable error states at every step.
Technology Stack
Three layers, one team
Most shops own one layer. We own all three — which means no integration gaps and a faster path to mainnet.
Smart Contracts
The trustless foundation
Web3 Frontend
What your users see and touch
Data & Infrastructure
Real-time on-chain data
One team owns the ABI from contract to UI
Shared TypeScript types across contract, subgraph, and frontend — no mismatches at integration time.
Architect → Build → Mainnet
A repeatable 5-phase process that ships wallet-integrated, real-time dApps — from architecture to post-launch monitoring.
Protocol Architecture
Contract interface, frontend state model, wallet flow design, and data indexing strategy all defined before coding begins. Deliverables: architecture doc, ABI draft, and wire-flow for every user interaction.
Contract + Frontend Co-Development
Smart contracts and UI built in parallel by the same team with a shared ABI. No "waiting for the backend" bottlenecks. Frontend develops against a local Hardhat fork of the target chain — real transaction flows from day one.
Data Indexing & Wallet Integration
The Graph subgraph deployed for complex historical queries. RainbowKit/ConnectKit configured with all target wallets. Every wallet flow — connection, signing, rejection, wrong network — tested with real hardware and MetaMask.
Testnet End-to-End Testing
Full testnet deployment with real wallets — MetaMask, WalletConnect, Ledger, Coinbase. Every user flow validated on the target chain. Gas estimates verified. Mobile browser testing included. No surprises at mainnet.
Mainnet Launch & Post-Deploy Monitoring
Contract audit, mainnet deployment, subgraph production setup, and on-chain monitoring. Frontend performance and error tracking via Sentry. 30 days of direct engineer access post-launch included in every engagement.
Why Full-Stack Matters
Split teams ship integration bugs
Most dApp failures aren't smart contract bugs. They're integration failures — the gap between the team that wrote the contract and the team that built the UI.
Result
Result
$0
ABI mismatches shipped
Across all mainnet launches
1
Team owns everything
Contracts + frontend + data
0
Integration phases
Built in parallel from day one
30d
Post-launch access
Direct engineer line
Industries
Where dApps change real industries
Domain knowledge built across real production protocols — fewer unknowns, faster delivery.
DeFi
AMMs, lending protocols, yield aggregators — full protocol frontends with real-time price feeds and position management.
Gaming
On-chain asset ownership, tournament contracts, and play-to-earn reward distribution with gasless UX.
Supply Chain
Product provenance tracking, batch verification, and supplier payment automation on immutable ledgers.
Real Estate
Tokenized property ownership, fractional investment, and rental payment automation without intermediaries.
Healthcare
Patient data consent management, clinical trial integrity, and medical credential verification.
Finance
Treasury management, cross-border payment rails, and programmable compliance for financial institutions.
Identity
Decentralized identifiers, verifiable credentials, and zero-knowledge proof-based KYC — no central authority.
Building in an industry not listed above?
Tell us your use caseQuestions we get all the time
If yours is not here, reach out. We respond within 24 hours with a real answer from an engineer — not a sales pitch.
MetaMask, WalletConnect (300+ wallets), Coinbase Wallet, Rainbow, Ledger hardware wallets, and Safe (Gnosis Safe) for multi-sig teams. We use RainbowKit or ConnectKit for clean, branded wallet connection UI — both have first-class mobile support and consistent cross-browser behavior.
For simple live data — token balances, current price — we query directly via RPC with event subscriptions. For complex historical data (transaction history, positions over time, event aggregates), we deploy a subgraph on The Graph Protocol. This gives you GraphQL queries for any indexed blockchain data with sub-second response times and no RPC rate limits.
Yes — via meta-transactions (EIP-2771) or sponsored transactions using Biconomy or Gelato. Users sign a message without holding ETH; a relayer submits the transaction on their behalf. This is particularly useful for onboarding non-crypto users or covering gas as a growth mechanism. We architect this upfront — retrofitting gasless support into an existing contract is difficult.
Yes — full-stack. We design and deploy the contracts, build the frontend, write the subgraph, and integrate everything. One team owns the entire dApp. This is significantly faster than splitting between two vendors and produces far fewer integration bugs — no ABI mismatches, no event signature errors discovered at integration time.
A single-contract dApp with standard wallet connection and basic on-chain data — 4 to 6 weeks. A full DeFi protocol frontend with subgraph, multi-chain support, and complex state — 8 to 14 weeks. NFT marketplaces with custom minting and auction logic — 6 to 10 weeks. We give you a week-by-week delivery plan in the first call.
A single-contract dApp with wallet connection, transaction flows, and basic on-chain data typically runs $20K–$50K. A full-stack dApp with custom contracts, a subgraph, multi-chain support, and complex UI lands in the $60K–$150K range. We quote a fixed scope after the spec phase, with milestone-based payments — and you own the entire codebase, contracts, and frontend on delivery.
Smart contracts live on-chain and the dApp reads them through RPC providers like Alchemy or Infura plus a The Graph subgraph for indexed data. The frontend can be hosted conventionally on Vercel or, for full decentralization, pinned to IPFS and served via an ENS domain or Fleek so there is no single point of control. We build either way depending on how trust-minimized you need the stack to be.
We use human-readable EIP-712 typed-data signing so users see exactly what they approve, scope token approvals to exact amounts instead of unlimited allowances, and validate every contract call on-chain rather than trusting frontend input. Wallet connection runs through audited libraries (RainbowKit, wagmi), and we add transaction simulation and clear confirmation UI to prevent blind-signing exploits.
“We needed smart contract work done right — no shortcuts. Their blockchain team audited, optimized, and deployed our DeFi protocol with zero post-launch issues.”
Alex Chen
Founder · Meridian DeFi · Singapore
Let's build your dApp
end to end
Start with a free 30-minute architecture call — we'll map the contract interface, wallet flows, and data layer, and give you a realistic timeline to mainnet.
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