Onchain App (dApp) Development

An onchain app, also called a dApp, is a product whose core logic or asset custody runs on a blockchain, with a conventional interface and supporting services around it. The contract is usually the smallest part of the work. LimeChain builds the riskiest user journey end to end first, then grows it into production. Past work includes the Discover feature for Status and DeFi governance tooling for Tally.

How it works

Every engagement runs the same sequence, building the riskiest user journey end to end before the rest of the product is scoped.

  1. 1

    Test the premise

    The problem, users, business model and onchain value are defined, including whether a blockchain is needed at all.

  2. 2

    Agree scope, gates and success measures

    Milestones, decision gates, privacy posture and acceptance evidence are settled before significant development.

  3. 3

    Design experience, architecture and threats together

    Core journeys, contract boundaries, backend services, wallet interactions, permissions, upgrades and recovery.

  4. 4

    Build one journey end to end, early

    Interface, wallet, contract and backend connected in a controlled environment so stakeholders interact with real behaviour.

  5. 5

    Grow it in micro-sprints

    Weekly demos of working increments, with senior engineers owning architecture, security and product-critical decisions.

  6. 6

    Beta, then launch on readiness criteria

    Representative users exercise the app on testnet or controlled beta before production goes live against explicit gates.

Frequently asked questions

What is an onchain app?
An onchain app is a product whose core logic or asset custody runs on a blockchain, with a conventional interface and supporting services around it. It is the same thing the industry has called a dApp or decentralized application. Building one involves smart contracts, indexing and backend services, wallet connection and transaction flows, the interface, monitoring and an operating model. The contract is usually the smallest part of the work.
What onchain apps has LimeChain built?
LimeChain built the Discover feature for Status, a curated directory of mobile-friendly Ethereum apps with a ranking system based on an exponential bonding curve. LimeChain also worked with Tally on DeFi governance tooling, including subgraph testing and gas refund contracts to reduce voting cost, and with Arxum on an enterprise platform on EOSIO connecting blockchain records to legacy IT systems across supply chain partners.
Do we actually need a blockchain for this?
Sometimes not, and LimeChain's architects test that before scoping a build. A blockchain earns its complexity where you need shared state between parties who do not trust each other, verifiable settlement, asset custody without an intermediary, or credible commitment to rules. Where a product only needs a database with an audit log, saying so early saves the client an expensive and permanent operational burden.
How do you handle wallet connection and transaction UX?
Wallet connection, network switching, signing, pending states, failures, gas and recovery are designed as first-class product states rather than edge cases, because that is where most users drop out. LimeChain builds these flows into the early end-to-end journey so they are tested with real wallets and real failures well before launch, including what the user sees when a transaction is stuck or reverts.
Which chains and wallets do you support?
Chain choice follows the product's cost, speed, privacy and ecosystem requirements and is decided in architecture, with published work across Ethereum, Solana, Polygon, Base, Hedera, Polkadot, NEAR and Canton Network. On wallets, LimeChain builds for browser extension wallets, mobile wallets via WalletConnect, embedded and social-login wallets, and smart accounts where account abstraction improves the experience.
Can you take over an existing app?
Yes. Taking over an existing product begins with an assessment of the contracts, services, test coverage, dependencies, monitoring and operational state, followed by a stabilization plan before new feature work. Where a contract system has structural problems that cannot be patched safely, LimeChain will say so and cost the migration path rather than building on top of it.
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