Unless you implement data collection in your indie code (as an indie developer) you have no 'extra' work or burden.
The GDPR scales with the size of the data collection, meaning: it doesn't matter how large the staff/company is, it matters if you collect data, and as an indie developer you'd be in an excellent position to quickly scope out anything you don't need. If anything, it's easier to not build collection than build it if you don't need it.