For fiction authors running Facebook ads

Finally know if your Facebook ads are actually selling books.

See in seconds what used to take a spreadsheet afternoon. Spot the ads quietly draining your budget, fix them the same day, and put that money back into finding readers. Whether the news is good or bad, you'll finally know instead of guess.

Analyze in minutes what used to take hours

Catch budget leaks the same day, not at month-end

Your Facebook ads, Amazon, and KDP in one honest view

Start free See how it works

Built by the ad manager behind $225k+ in author ad spend across 350+ author campaigns.

Free for your first book

No credit card required

Disconnect anytime

KdpDeck dashboard showing true cost per new reader, reader acquisition summary, and per-ad performance

Built for fiction authors who run their books like a business, and are done being sold the dream.

Built for KDPDesigned around Kindle Unlimited economics, not generic e-commerce metrics.

Reader economics, not ROASTrue cost per new reader, weighted for KU reads and read-through.

Calm, not franticPlain-language interpretation that helps you decide, without the panic.

Your data stays yoursRead-only access. We never sell, share, or touch your ad budget.

How KdpDeck works

From scattered data to a clear picture, automatically.

Connect your accounts once. KdpDeck pulls every click, borrow, and sale into one place and tells you, in plain English, what's bringing in readers and what's quietly draining your budget.

Connect your accounts

Start with your Facebook ads, connect Amazon Ads alongside, and upload your KDP reports. Setup takes a couple of minutes.

Facebook · connected

Amazon Ads · connected

We find the signal

KdpDeck matches spend to readers across purchases and KU borrows, surfacing your real cost per reader by style.

Illustrated$2.11

Photographic$2.15

Digital-art$3.41

Get a clear read

Every view comes with plain-language interpretation: what we're seeing, what it may mean, and what's worth testing next.

What this may mean

Illustrated ads are reaching readers ~17% cheaper than your other styles.

Grow your readers

Spend with confidence, lean into what's working, and watch your true cost per new reader come down over time.

True CpNR trend↓ improving

vs last 30 days−18%

What you get

The metrics standard dashboards leave out.

True cost per new reader, KU included

ACoS divides spend by sales and stops there. But in a KU-heavy catalogue, half your returns are page reads that ACoS can't see. KdpDeck blends purchases, borrows, and a ghost-sale multiplier into one honest number: what it actually costs to bring in a reader.

true cost per new reader

$2.83

what it currently costs to bring in one new reader

Attributed readers47

Ghost multiplier (KU + untracked)3.45×

Total readers acquired171

Flagged this week: $118 of spend on ads producing zero new readers.

Which days actually made money

Your KDP royalties and your ad spend, on one chart. Bars that rise above the line are profitable days; the ones below tell you where budget leaked. No exporting, no spreadsheets, no second-guessing whether Tuesday was worth it.

ROYALTIES EARNED

$857.78

NET

+$377.82

Profitable on 17 of the last 30 days. Strongest day: Tuesdays, averaging $43.83.

What a reader is really worth

A single book rarely pays back its own ad spend. Read-through shows the full value of a new reader once the rest of your series is in the picture, so you know whether you're building a profitable catalogue or just renting attention.

Book 1

→ 67%

Book 2

→ 69%

Book 3

Value per new reader (full series)$4.67

Cost per new reader$2.83

Headroom per reader+$1.84

Who this works for

KdpDeck is built for a specific setup. If this is you, it works properly from day one.

Fiction, ideally in series. The whole thing turns on read-through, meaning how many readers carry on from book one to book two. A standalone non-fiction title won't get much out of it.

You advertise on Facebook. That's where the spend data comes from.

You use Amazon Attribution links in those ads. This is the one that matters most. Without Attribution there's no way to connect what you spent to what you sold, so cost per new reader can't be calculated. If you're running Facebook ads straight to your Amazon page with no Attribution link, that's worth fixing whether or not you use this tool.

Not sure whether you have Attribution set up?

Pricing

Simple pricing for
serious authors

Start free with your promos and one book. Upgrade when you're running ads and want the live picture.

Free

forever

Run one book like a pro. See what a reader is really worth to you, and what your promos actually cost.

1 book

Cost per new reader on your promos

What a reader is really worth (read-through)

Plain-language daily read

Sales view with promo logging

Start free

Works best with Amazon Attribution links set up.

Not ready to connect anything?

Start on the free plan. One book, no credit card, and you'll see what a reader costs you and what a reader is worth before you decide anything else.

Start free

Running a lot of books? If you'd rather have someone read the numbers for you and hand back a ranked list of what to do, that's a different service and it lives over at Weekend Publisher.

See the Diagnostic →

Finally know if your Facebook ads are actually selling books.

Connect your accounts

We find the signal

Get a clear read

Grow your readers

Spending $1,000+/month on Facebook ads?

True cost per new reader, KU included

Which days actually made money

What a reader is really worth

Not ready to connect anything?

Stop guessing. Start knowing.