Second Brain vs Wave
Wave offers free accounting and invoicing. Second Brain offers that plus a complete workspace. Both are free — but one does a lot more.
| Feature | Second Brain | Wave |
|---|---|---|
| Invoicing | ||
| PDF Invoice Export | ||
| Expense Tracking | ||
| Financial Reports | ||
| Contact Management | ||
| Documents & Notes | ||
| Task Management | ||
| Kanban Boards | ||
| Organized Workspaces | ||
| Dark Mode | ||
| Bank Connections | ||
| Payroll | Paid add-on | |
| Online Payments | Coming soon | Paid add-on |
| Receipt Scanning | ||
| Completely Free | Yes (beta) | Core features |
Wave Is Great for Accounting — But That's It
Wave has been the go-to free accounting tool for freelancers and small businesses for years. It handles invoicing, expense tracking, and basic financial reports well. But once you need to write a proposal, organize project files, manage tasks, or keep client notes, you're back to juggling separate tools. Wave solves your accounting — Second Brain solves your entire workflow.
What Second Brain Adds on Top of Wave
- Rich document editor — Write and organize proposals, contracts, meeting notes, and project documentation.
- Task management — Kanban boards with priorities, due dates, sections, and project organization.
- Spaces — Group everything by client or project: documents, tasks, and notes in one place.
- Modern interface — Dark mode, keyboard shortcuts, command palette, and a clean design built for daily use.
Where Wave Still Wins
Wave has deeper accounting features: bank connections for automatic transaction imports, double-entry bookkeeping, and payroll processing (as a paid add-on). If you need full accounting compliance with bank feeds and payroll, Wave is more complete on the finance side. Second Brain focuses on giving freelancers everything they need in one workspace — invoicing, finances, documents, and tasks — rather than deep accounting features most freelancers don't use.
The Real Comparison: Wave + Notion vs Second Brain
Most freelancers using Wave also use Notion or Google Docs for documents, and Trello or Todoist for tasks. The real comparison isn't Wave vs Second Brain — it's Wave + Notion + Trello vs Second Brain alone.
| Tool Stack | Monthly Cost | Apps to Manage |
|---|---|---|
| Wave + Notion + Trello | $10–15/mo | 3 separate logins |
| Second Brain | $0 (beta) | 1 app |
Who Should Choose Second Brain Over Wave?
- Freelancers who want one tool instead of three
- Anyone who needs documents and tasks alongside invoicing
- People who value a modern, fast interface with dark mode
- Small business owners who want to simplify their tool stack
Want to get a better handle on your finances? Read our guide on how to track business expenses or try our freelance tax estimator to plan ahead for tax season.
Wave's Invoicing + Notion's Workspace — In One Free Tool
Documents, tasks, invoices, contacts, and finances. Free during beta.
Start Free — No Card Needed