When an app-chain beats a smart contract
A contract on a shared chain competes with every other application for block space and follows someone else's fee and governance rules. An app-chain gives you dedicated throughput, custom transaction types, your own gas token or fee model and control over upgrades. Dydx-style order book designs use this approach for that reason. Cosmos app-chains also let you choose the fee token, set minimum gas prices and add features at the protocol level, such as native order books, that contracts cannot easily match.
The price is operational weight. You must attract and coordinate validators, bootstrap security, run explorers, relayers and RPC nodes and carry responsibility for chain halts. For many products a rollup or contract is simpler. We help you test that assumption before committing to a chain. The decision should be tested with numbers: expected transactions per second, validator costs, token design and the effort needed to market a new network to users and developers.
