The AI agent for plant controllers

Sauna reads ledgers, production variances, and labor reports, drafts the plant P&L and variance commentary, flags cost overruns, and assembles the month-end pack — citing the entries and holding everything for review.

Get started for free

What it does

What Sauna does for plant controllers

01
Explain the variances
Reads material, labor, and overhead actuals from QuickBooks against standard and drafts variance commentary naming the drivers for the plant review.
02
Build the plant P&L
Assembles the monthly plant P&L into Google Sheets with prior-month and budget columns, ready for your review before it goes to corporate.
03
Track absorption
Calculates overhead absorption from production hours and drafts a flag when under- or over-absorption crosses your threshold.
04
Close the month
Drafts the month-end checklist status and the journal entries it can support from source data, each held for your approval before posting.

Put Sauna to work on this.

Get started for free

In context

Ask in chat. It does the work.

Sauna shows up where you already work — the web app, Slack, email, iMessage, and Superhuman. It reads what it needs, does the task, and comes back with the draft for your approval.

app.sauna.ai/sauna

You

@Sauna Pull the plant actuals from QuickBooks, draft variance commentary against standard for material and labor, and tell me which cost centers drove the overrun.

Sauna

Reading QuickBooks and Google Sheets.

Done — here's the draft and what I found. Approve to send.

Try it

Ask in plain words

The literal prompt for this job. Open it in Sauna and it picks up from there.

“Pull the plant actuals from QuickBooks, draft variance commentary against standard for material and labor, and tell me which cost centers drove the overrun.”

Example promptRun in Sauna →

Plugs into the tools you already run — and thousands more, or any MCP server.

QuickBooks Google Sheets Slack Google Docs

Good to know

Questions, answered.

Will it post journal entries automatically?

No. It drafts the entries it can support from source data and shows the backup, but posting to the ledger is yours. Nothing hits QuickBooks without your approval.

Can I trust the variance commentary?

It names drivers grounded in the actuals it read and cites the cost centers and amounts. Treat it as a strong first draft to verify, not the final sign-off.