Great question. We are quite different both in the features we offer and how we operate the business:

1. River operates our own custody infrastructure and has our own licenses which allow us to custody client funds. Swan outsources their custody and licensing (previously to Prime Trust, and currently to Fortress Trust). We think it's important to have full visibility and control over custody for the safety of our clients given how many incompetent and/or malicious actors are operating some of these third party custodians. Of course we always encourage self-custody.
2. We have zero-fee DCA. Whenever you DCA on River you pay zero fees on those purchases after the first week. Spreads are very tight.
3. We support Lightning payments to and from your account
4. We support Target Price Orders (similar to limit orders)
5. We like to think our app and service are pretty sweet as well
6. We put out pretty sweet research like our Lightning Report
7. We have a lot of other unique features coming in the next few months. Stay tuned!