How does account-centric indexing differ from subgraphs?

Hemera Protocol is designed to tackle account-centric cross-app use cases, which includes but are not limited to identity & reputation, asset balances, social connections, and in future data assets ownership and other broader use cases. While subgraph, provided by the Graph, Alchemy and others, are tackling application-specific data needs, in particular in-Dapp analytics support for frontend developers.