Built in the USA

QuietSignal
QuietSignal

Every vendor invoice read, checked, and filed. Automatically.

QuietSignal reads each vendor invoice line by line, checks the math, matches duplicates, pulls out fees, and holds anything that does not add up with the reason in plain words. Spend by vendor stays current without a spreadsheet, for one location or many.

Short walkthrough on your own invoices. No credit card required.

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  • No contracts
  • Nothing to integrate
  • No setup costs
  • Cancel anytime
  • 30+ years of experience
Works with the email you already use. Nothing to change.

One platform, built around your business.

Every invoice read, checked, and filed automatically, a plan for where automation helps, a site that gets found, and marketing that publishes on schedule.

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Your inbox, read for you

Automated invoice processing. Connect your email and it just runs.

Connect the inbox your vendors already send to and QuietSignal reads each new invoice attachment as it arrives. Prefer to upload? PDFs, spreadsheets and phone photos work too. Every invoice is read line by line, the math is checked, duplicates are matched, and anything that does not add up is held for you with the reason stated.

app.quiet-signal.com/review
Sample
your-business@example.comConnected
billing@vendor-a.com→your-business@example.com

Vendor A Invoice #38241

Mar 14, 2026 · 18 line items · printed total $1,847.20
Held for review
Why it is held
  • Lines do not sum to the printed total
    Lines add to $1,812.40 · printed total $1,847.20 · difference $34.80
    $34.80
  • Fuel surcharge: new to this vendor
    Not on any earlier Vendor A invoice · pulled out as its own line
    $18.50
  • Duplicate check
    Compared with INV-38112 on vendor, date, total and lines · no match
    Clear
  • Price history
    Heirloom tomato, case · last three invoices $24.00, $24.00, $28.50
    Recorded
Activity
  • QS
    Email autopilot picked up a new invoice from billing@vendor-a.com · this morning
  • QS
    Reader read 18 lines, 3 fees and the vendor as structured data · this morning
  • QS
    Checker held INV-38241: lines do not sum to the printed total · this morning
Works on the email address your vendors already use
Holds what does not add up, with the reason stated in plain words
Matches duplicate invoices before they are counted twice
Fuel, delivery, service and minimum charges become lines of their own
Keeps a history of what each vendor charged you for each item
Reorder suggestions and days of supply from what you record
How it works

Connect once. Then it just runs.

01

Connect your email or forward invoices

Connect the inbox your vendors already send to. Nothing changes for them.

02

Every invoice is read

Line items, totals, fees and the vendor, as structured data, not a picture of a page.

03

The math is checked

Lines are multiplied out and summed against the printed total. Duplicates are matched.

04

Held for review

Anything that does not add up is set aside with the reason in plain words, so your attention goes only where a decision is needed.

What QuietSignal does

Three things you cannot do with manual invoice review.

QuietSignal reads what sits under the total: the lines, the quantities, the unit prices, the fees. Built for operators who do not have time to read every line by hand.

app.quiet-signal.com/analytics
Sample
QuietSignalQuietSignal/Analytics
Last 30 days

Spend overview

From invoices read and filed · held invoices kept out
Spend
$48.2k
Invoices
46
Held
4
Vendors
8
Spend Trend · Weekly
Filed invoices
W1W2W3W4W5W6W7W8
Spend by Category
$48.2k
  • Produce
    $13.1k
  • Proteins
    $11.5k
  • Dairy
    $7.8k
  • Dry Goods
    $6.4k
  • Beverages
    $5.1k
  • Cleaning
    $4.3k
Held and recorded
  • INV-38241 held
    lines do not sum to total
  • INV-21455 held
    matches INV-21431
  • Delivery charge, Vendor C
    new to this vendor
  • Heirloom tomato, case
    price history updated
One · Intelligence

Every line, as data.

QuietSignal extracts each line item, quantity and unit price from PDFs, spreadsheets and emailed attachments into one structured record per invoice, checks the arithmetic, and keeps a price history per vendor and item.

  • Reads PDFs, spreadsheets, emailed attachments and photos (photo totals are held when they cannot be verified)
  • Multiplies each line out and checks it against what the vendor printed
  • Keeps what each vendor charged you for each item across invoices
app.quiet-signal.com/locations
Sample
QuietSignalQuietSignal/Locations
This month

Spend by ship-to location

From the ship-to printed on each invoice
  • Downtown$9,840
  • Riverside$7,210
  • Heights$4,940
  • Airport$2,190
Review queue
Two to place
  • Vendor B · INV-21460
    No ship-to printed on the invoice
  • Vendor E · INV-00412
    Ship-to reads a street with no matching location
Two · Locations

Spend where the goods were received.

When an invoice names the location it shipped to, QuietSignal records that location and groups spend by it. Anything it could not place goes to a review queue you resolve.

  • Ship-to read from the invoice when it is printed
  • Spend grouped by location
  • A review queue for anything unplaced
app.quiet-signal.com/review
Sample
QuietSignalQuietSignal/Held for review
Waiting on you

Four invoices held, each with its reason

Nothing here is counted in your totals until you decide.
  • Vendor A · INV-38241Held
    Lines do not sum to the printed total
    Lines $1,812.40 · printed $1,847.20 · difference $34.80
  • Vendor B · INV-21455Held
    Matches an invoice you already have
    Same vendor, date, total and lines as INV-21431
  • Vendor C · INV-09812Held
    A fee new to this vendor
    Delivery charge $12.00 not on any earlier Vendor C invoice
  • Vendor D · INV-77120Held
    Photo total could not be verified
    Lines read; the printed total was not legible
Three · Review

What does not add up, set aside.

QuietSignal holds an invoice when its lines do not sum to the printed total, when it matches an invoice you already have, or when a fee appears that was never on that vendor's earlier invoices. Each hold states the reason in plain words.

  • Line math checked against the printed total
  • Duplicates matched on vendor, date, total and line detail
  • New fees called out so you can question them
Common questions

What QuietSignal is, in plain terms.

What is QuietSignal?
QuietSignal is invoice processing and back office software for restaurants and small businesses. It reads vendor invoices line by line, checks the math on every one it can verify, matches duplicates, keeps a price history per vendor and item, and reports what a business spends with each vendor. QuietSignal is made by QuietSignal LLC and is based in the United States.
Who is QuietSignal for?
Restaurants, bars, trade services, property owners and other small and mid-sized businesses that receive more vendor invoices than anyone can read by hand. It fits one location and it fits several.
How do invoices get into QuietSignal?
Three ways, and none asks your vendors to change anything. Connect the inbox they already send to, upload the files you hold, or photograph paper at delivery. Photos are read for their lines; a total that cannot be verified is held for your review rather than guessed.
What happens when the numbers on an invoice do not agree?
The invoice is held with the reason in plain words rather than quietly corrected. You see the line, what the vendor printed, what the math says and the difference.
Ready?

See what is actually on your invoices.

Bring a few recent invoices. We will show you what QuietSignal sees. No credit card required.