How much does it cost to run a dapp on the Internet Computer?

Computation and Storage Costs

The Internet Computer requires computation operations and storage to be supported by cycles. Cycles are generated from the conversion of Internet Computer (ICP) utility tokens.

The Role of the Network Nervous System (NNS) in Defining Costs

The Internet Computer is a decentralized public utility, controlled by the NNS –– the network’s open, algorithmic governance system. The NNS fundamentally controls how many cycles are required for low-level computation actions for computation and storage. The number of cycles needed for individual computations will vary based on a number of factors considered by the NNS, including proposals from the community.

Details: Cost of Compute and Storage Transactions on the Internet Computer

Canisters (dapps/smart contracts) computations running on the Internet Computer blockchain are fueled by “cycles”, which play a similar role to “gas” on Ethereum. There are several major differences, however. One of the most fundamental differences is that Ethereum leverages “user pays” and the Internet Computer leverages “smart contract pays” (sometimes called “reverse gas”) model. Whereas the Ethereum blockchain requires end-users to send payments for the gas smart contracts consumed with every transaction, on the Internet Computer, canisters (dapps/smart contracts)are pre-charged with cycles, such that contracts effectively pay for their own computation - freeing users from the responsibility.

The actual costs in cycles and USD are available at https://internetcomputer.org/docs/current/developer-docs/deploy/computation-and-storage-costs.