dApp Development Company | Custom Web3 & DeFi Development

0dApps & launches shipped

0blockchains in production

$0moved through our contracts

0exploits across our contract stack

01 — dApps we build

Custom dApp development for every on-chain vertical

Blockchain app development is not one discipline — a lending protocol, a play-to-earn backend and a DAO treasury demand different architectures. We've shipped all of them.

DeFi Protocol Development

DEXs and swap aggregators, lending and borrowing markets, yield vaults and liquidity management — DeFi development with battle-tested math, oracle safety and gas-efficient contract design at the core.

DEX / AMMLendingYield vaults

Presale & Fundraising dApps

Token sale dApps with staged pricing, contribution caps, on-chain vesting and claim portals. The same stack behind our presale website development service — non-custodial from block one.

Token salesVestingClaim portal

Staking & Farming dApps

Flexible and locked staking pools, LP farming, auto-compounding vaults and real-time APY dashboards. See our dedicated staking platform development service for the full breakdown.

Locked poolsLP farmingAuto-compound

GameFi & Play-to-Earn Backends

On-chain game economies: reward tokens with sink-and-faucet balancing, NFT items and crafting, marketplace escrow and anti-cheat signing — GameFi infrastructure that survives real player pressure.

P2E economiesNFT itemsReward logic

DAO & Governance Tooling

DAO development from token-weighted and NFT-based voting to on-chain treasuries, proposal lifecycles, timelocks and delegation — governance your community can actually use, not just fork and forget.

VotingTreasuryTimelocks

NFT Marketplaces & Minting dApps

Custom NFT marketplaces with royalties, offers and auctions, plus high-throughput minting dApps — allowlists, Merkle proofs, reveal mechanics and gas-optimized batch mints that hold up on drop day.

MarketplaceMintingRoyalties

02 — How we build

A production-grade Web3 stack, not a prototype

Decentralized application development fails in the seams — between contract and frontend, between chain and index. We own every layer so the seams don't exist.

The stack behind every dApp we ship

No exotic frameworks, no abandoned libraries. We build on the tools serious Web3 teams standardize on, so any competent developer can maintain your codebase after handover.

Solidity & Rust smart contracts — EVM chains, Solana programs, full test coverage
Next.js / React frontends — fast, responsive, SEO-ready interfaces
wagmi / viem + WalletConnect — typed contract calls and every major wallet
Subgraphs & indexers — The Graph and custom indexing for instant on-chain data
Node.js / Go backends — APIs, signers, bots and off-chain services
IPFS / Arweave storage — decentralized metadata and asset hosting

StakePanel.tsx

import { useReadContract, useWriteContract } from 'wagmi'
import { parseEther, formatEther } from 'viem'
import { vaultAbi } from './abi/vault'

export function StakePanel() {
  const { data: tvl } = useReadContract({
    abi: vaultAbi,
    address: '0xA3f…9c1',
    functionName: 'totalAssets',
  })

  const { writeContract } = useWriteContract()
  // one call: wallet prompt, tx, receipt
  const deposit = () => writeContract({
    abi: vaultAbi,
    address: '0xA3f…9c1',
    functionName: 'deposit',
    value: parseEther('1.5'),
  })

  return <Vault tvl={formatEther(tvl ?? 0n)}
                onDeposit={deposit} />
}

How we de-risk dApp projects

Most failed Web3 builds die from vague scope and silent months. Our delivery model is designed so you always know what's done, what's next and what it costs — before we start.

Fixed-scope milestones — a written spec and fixed price per milestone; no drifting hourly bills
Testnet demos every week — click through the real dApp on testnet every Friday, from week one
Audit-ready code — tests, fuzzing, static analysis and NatSpec docs before any third-party audit
Handover with docs — full repo, deployment scripts and architecture docs; contract ownership to your multisig

Get a Scoped Quote

03 — Multi-chain

dApp development on every chain that matters

We deploy decentralized applications where your users already are — and build cross-chain when one network isn't enough.

EthereumERC-20

BNB ChainBEP-20

SolanaSPL

PolygonPoS

ArbitrumL2

BaseL2

AvalancheC-Chain

TONJettons

TronTRC-20

PolkadotSubstrate

OptimismL2

Your chainEVM & more

04 — How we work

From idea to mainnet in five steps

The same process behind 120+ shipped dApps and launches. You always know what ships next and what it costs.

01

Discovery & spec Week 1

We turn your idea into an engineering spec: user flows, contract responsibilities, chain selection, token mechanics and what stays off-chain. You get a written scope with a fixed price per milestone — and we'll tell you plainly if part of your idea doesn't need a blockchain.

02

Architecture & UX Week 1–2

Contract architecture, upgrade strategy and data-flow diagrams on the engineering side; wireframes and high-fidelity UI design on the product side. Both are approved by you before a line of production code is written.

03

Contracts + frontend in parallel sprints Week 2–5

Smart contract and frontend tracks run simultaneously against the agreed interfaces, integrated continuously on testnet. Every Friday you click through the latest build yourself — no "trust us, it's coming along."

04

Security review & testnet beta Week 5–7

Full test suite, fuzzing and static analysis, internal peer review, then a public or private testnet beta with your community. Third-party audit coordination (CertiK, Hacken, SolidProof) for value-critical protocols.

05

Mainnet launch & maintenance Week 7+

Deployment from audited scripts, contract verification, ownership transfer to your multisig and launch-week monitoring. Ongoing maintenance, new features and scaling under a support retainer if you want us to stay on.

05 — Why teams pick us

Dedicated Web3 team vs. the alternatives

Generalist agencies learn Web3 on your budget. Solo devs disappear at the worst moment. A dedicated dApp development company is the third option.

	PresaleWidget	Generalist agency	Solo dev
Web3-specific experience	120+ dApps & launches	First or second project	Varies wildly
Contract security	Tests, fuzzing, audits — 0 exploits	Outsourced, extra cost	Usually untested
Design quality	Dedicated Web3 UI/UX	Good, but not crypto-native	Templates
Speed	MVP in 1–3 weeks	3–6 months	Unpredictable
Communication	Direct Telegram + weekly demos	Account managers, tickets	Direct — while responsive
Post-launch support	Retainer, same team	New contract, new team	Often gone
Cost predictability	Fixed price per milestone	Hourly, scope creep	Cheap — until rework

06 — Client results

Teams who shipped dApps with us

“They rebuilt our yield vault protocol from a half-finished codebase, added auto-compounding and passed the audit with zero criticals. TVL crossed $6M in the first month after relaunch.”

DS

D. SørensenFounder, DeFi yield protocol — $6M TVL

“Our play-to-earn backend handles 40k daily transactions on Polygon without a hiccup. The weekly testnet demos meant our game designers could tune the economy while contracts were still in development.”

RA

R. AlmeidaCTO, GameFi studio — 38k stakers

“We asked for DAO governance with delegation, a timelock and a treasury dashboard. Fixed quote, spec signed, delivered a week early. First on-chain vote passed with 2,100 wallets participating.”

LN

L. NguyenCore contributor, infrastructure DAO

07 — Guide

What is dApp development?

dApp development is the discipline of building decentralized applications — software whose core logic runs as smart contracts on a blockchain instead of on a company's servers. A dApp typically combines three layers: on-chain contracts that hold funds and enforce rules, an indexing layer that makes blockchain data queryable in real time, and a web frontend where users connect a wallet and transact. Unlike traditional apps, a deployed contract can't be quietly patched on Friday night, and every bug is potentially an open vault. That's what separates Web3 development services from ordinary web work: the cost of a mistake is measured in user funds, not error logs.

How much does dApp development cost?

Honest ranges, because "it depends" helps nobody. An MVP dApp — one well-scoped contract, a wallet-connected frontend and basic indexing — starts at $2,900 and ships in one to three weeks, because we assemble it from our premade, audited contract stack wherever the scope allows. Full protocols with multiple interacting contracts, subgraphs, admin panels and third-party audits run $9,900+ over four to eight weeks. Narrow, well-defined builds sit at the bottom of those brackets: a presale website or a staking platform built on a proven contract stack costs far less than a novel lending protocol, because the risky engineering is already done. The single biggest cost driver isn't features — it's ambiguity. A tight spec is worth five figures.

How to choose a dApp development company

Ask four questions. First, can they show live, verifiable contracts on-chain — not screenshots? Real smart contract development experience leaves a public trail on Etherscan. Second, who handles security: is testing, fuzzing and audit preparation in the base price, or an upsell you'll discover later? Third, does one team own the full product — contracts, frontend, indexing, token design — or will you end up coordinating three vendors who blame each other? Fourth, what happens after launch: who holds the keys, who owns the repository, and will anyone answer when mainnet does something the testnet never did?

We built this studio to be the easy answer to all four. One senior team, blockchain app development from DeFi and GameFi to DAO tooling, audit-ready code as the default, and every contract, key and line of code handed over to you at the end. Send us your idea — you'll get a concrete scope, timeline and fixed price within 24 hours.

08 — FAQ

dApp development, answered

An MVP dApp — one core contract plus a wallet-connected frontend — starts at $2,900, because we assemble it from our premade, audited contract stack wherever the scope allows. Full DeFi protocols, GameFi backends or DAO platforms with multiple contracts, subgraphs and admin tooling run $9,900+. Every quote we send is fixed-price against a written scope, so the number you approve is the number you pay.

An MVP dApp usually ships in 1–3 weeks, because we build on our premade, audited contract stack wherever possible; larger builds with several contracts, indexing and audits take 4–8 weeks. We run contracts and frontend in parallel sprints with a testnet demo every week, so you see working software from week one — not a reveal at the end.

Ethereum, BNB Chain, Solana, Polygon, Arbitrum, Base, Optimism, Avalanche, TON, Tron, Polkadot and any EVM-compatible network — 14 chains in production so far. We also build cross-chain dApps where users interact from several networks against one protocol.

Both. Most clients hire us for the complete decentralized application: smart contracts, Next.js/React frontend, wallet integration, subgraph indexing, backend services and deployment. If you already have a frontend team, we can deliver standalone smart contract development with documented interfaces your developers integrate against.

Yes — roughly a third of our projects are rescues or extensions. We start with a paid technical review of the contracts and frontend, report what is safe, broken or exploitable, then quote a fixed price to stabilize and extend it. We regularly add staking, new pools or fresh UIs to inherited protocols.

Security is built in, not bolted on: full test coverage, fuzzing and static analysis on every contract, internal peer review, and a testnet beta before any mainnet deployment. For value-critical protocols we coordinate third-party audits with CertiK, Hacken or SolidProof. Our deployed contract stack has zero exploits across 120+ launches.

Yes, we sign NDAs before you share anything sensitive — just ask on Telegram. At handover you receive the complete repository, deployment scripts and documentation, and all intellectual property transfers to you. Contract ownership and admin keys go to your multisig; we retain nothing and there is no vendor lock-in.

Ready when you are

Let's scope your dApp this week

Tell us what you're building on Telegram or by email. We'll reply with a concrete architecture, timeline and fixed price — usually within a few hours.

@blocksharkcom on Telegram info@blockshark.com

Free consultation · Fixed-price quotes · NDA on request