Onchain App (dApp) Development

We build onchain applications end to end, covering smart contracts, backend services, indexing, wallet integration and transaction flows. We also build the user interface and production monitoring, with support for browser, mobile, embedded and smart-account wallets. Past work includes the Discover feature for Status and governance tooling for Tally.

How it works

  1. 1

    Validate the product premise

    We assess the users, business model and role of blockchain in the product. If blockchain doesn't add value, we'll tell you.

  2. 2

    Agree the decision gates

    We define what has to be true to pass each milestone, and what evidence settles it.

  3. 3

    Design experience and architecture together

    We design contracts, services and interfaces in parallel, so product and technical decisions stay aligned.

  4. 4

    Build one journey end to end

    We connect a real wallet, contract and backend, so you click through it in the opening sprints.

  5. 5

    Grow it in weekly loops

    You get working software every week. AI handles routine implementation under the agreed data policy.

  6. 6

    Build the failure states

    We implement and test stuck transactions, failed signatures and wrong network as core flows.

  7. 7

    Beta, then launch

    Representative users exercise the product on testnet first. We release to production once the gates pass.

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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