Hello, i just found out about meltano and dagster. Ive been wondering if this is perfect for having automatic fetch of financial data from stripe and appstore and load it up in accounting software. Is this where meltano shines? has someone experience in this?

Yes quite a few, I orchestrate my meltano runs with dagster. Take a look at the dagster utility to get started https://hub.meltano.com/utilities/dagster

automatic fetch of financial data from stripe and appstore and load it up in accounting software

sounds like a use case of reverse ETL. You'd load the financial data into a data warehouse, model it according to the structure expected by the accounting software, and then use an custom target (e.g. target-quickbooks). The latter part is usually custom because it's hard to generalize the expectations of reverse ETL targets, but the Singer SDK has the basic building blocks.