The closest comparison on this list. Both are built for solo professionals. The difference is the client-facing layer and whether you can try it without paying.
Quivva is genuinely good at retainers and time tracking, and it is built for freelancers rather than retrofitted from a team tool.
Quivva is a tool you look at. Freshlance is also a tool your clients look at — a portal with live progress, a booking page that reads your real availability, and scope approvals they can action themselves. That changes how much of your week goes to status emails.
Competitor details as we understand them at time of writing. Check their site for current pricing.
Free forever for 2 projects and 2 clients. No credit card, no trial clock.