Built for Marketers Who Run Their Own Business
Manage campaign briefs, send professional invoices, and track every client — without juggling five different tools. One workspace for your entire marketing business.
Sound Familiar?
These are the problems marketers tell us about every week.
Invoicing Is Manual and Messy
Tracking retainers, project fees, and ad spend billing across spreadsheets. You waste hours formatting invoices that still look unprofessional.
Strategy Docs Live in 5 Different Tools
Campaign briefs in Google Docs, tasks in Notion, feedback in Slack, approvals in email, budgets in spreadsheets. Nothing is connected.
No Single View of Your Client Pipeline
Who is active, who is overdue, what is in progress? You piece it together from memory, sticky notes, and scattered project boards.
Paying $100+/mo for Your Tool Stack
Project management, invoicing, CRM, docs — each one costs $20-30/mo. The monthly bill for running your freelance business adds up fast.
How Second Brain Solves It
Everything you need to run a marketing business, in one workspace.
Flexible Invoicing for Every Billing Model
Retainer billing, project milestones, hourly rates — all in one system. Create, preview, and export branded PDF invoices in under two minutes.
Campaign Briefs & Strategy Docs in the Block Editor
Write SOWs, content calendars, client reports, and campaign strategies in a rich text editor. Keep everything linked to the client and project.
Client Project Boards
Track every engagement phase — pitch, onboarding, active, reporting, renewal — on visual kanban boards with priorities and due dates.
Financial Dashboard at a Glance
See recurring revenue, monthly trends, and who has not paid. Know exactly where your business stands without opening a spreadsheet.
Contact Management with Full History
Every client, every campaign, every invoice linked together. Never dig through email to find a contract, brief, or billing detail again.
A Day in the Life
How a freelance marketing consultant uses Second Brain
8:30 AM — You open Second Brain and check the dashboard. A retainer invoice was paid overnight. Two campaign briefs are awaiting client approval.
10:00 AM — A new lead comes in. You create a contact, add them to your pipeline board under “Pitch”, and draft a scope of work in the block editor with deliverables and timelines.
12:00 PM — You finish a content calendar for an active client. You move the task card from “In Progress” to “Review” on the kanban board and update the campaign brief with final copy.
3:00 PM — Time to invoice. You create an invoice linked to the client contact, add line items for strategy consulting and ad management, preview it, and export a branded PDF. Sent in under two minutes.
5:00 PM — You glance at the finance dashboard: recurring revenue is up 15% this month, and you spot a client who has not paid an invoice from two weeks ago. You send a reminder. Day done.
Marketers and Consultants Love It
“I replaced four separate tools with Second Brain. Campaign briefs, invoices, client boards, and finances — all in one workspace. I save at least 6 hours a week and my clients get a way more professional experience.”
Sophie Chen
Freelance Growth Marketer
“Client management used to be my biggest headache. Now I see every engagement, every invoice, and every deliverable in one place. I sent my first invoice within 10 minutes of signing up. Game changer.”
Marcus Bauer
Digital Marketing Consultant
Your Marketing Business, One Workspace
Stop stitching together Google Docs, FreshBooks, Trello, and your CRM. Second Brain gives you invoices, briefs, client boards, and finances in a single tool — free during beta. Read our tips on how to get freelance clients or check your margins with our profit margin calculator.
Create Your Free AccountNo credit card required · All features included