A financial planning tool for small commercial farms.
Brackish Books is two sister apps under one roof. Tides serves aquaculture operators — RAS systems, pond farms, open-ocean and nearshore shellfish, and wild harvest businesses. Tilth serves agriculture operators — mushroom growers, market produce farms, orchards, and small livestock operations.
Both apps share the same financial engine: per-product pricing with margin and break-even analysis, enterprise budgets, integrated cash-flow planning, and annual projections that tie revenue, COGS, overhead, and ending cash together.
Owner-operators, farm managers, and bookkeepers at small commercial farm and harvest businesses. The platform is designed for adults running real operations. It contains no advertising, no social network, no messaging between strangers, and no public user-generated content — making it appropriate for use on school, workplace, library, and other managed networks.
Your plans are worked out in your browser. Nothing about your operation reaches us unless you make an account and choose to save it, in which case only your own account can read it. All traffic is served over HTTPS.
Brackish Books is free. There is no paid tier, no trial, and no card. An account is optional: start with no account at all, and sign in later if you want your farms, plans, cost lines, and recorded periods saved for another day, another device, or filing time.
If you came from Brackish Course, the course workbook handoff brings your finished budget workbook in and uses the course's own words on screen: cost of production, break-even price, contribution margin, and channel margin.
If you take the course, sign in here with the same email address. That is the whole of the connection: the course sends us nothing about you, not grades, notes, progress, or payment details, and we do not create accounts for students who have not opened this tool themselves.
It is a planning and pricing tool, not your books of record. There is no chart of accounts and no accrual ledger, by design, so tax filing and anything an accountant signs off on still needs real bookkeeping kept alongside your plan.
Questions, access requests, or feedback: contact us.