For serious fiction authors

Finally know if your ads are actually working.

No "scale to six figures." No magic ROAS hacks. Just the honest math on what a reader really costs you — and what they're worth back across your series. Whether the news is good or bad, you'll finally know instead of guess.

Your true cost per new reader — page reads and all

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

Plain language, so you decide without the panic

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Free for your first book

No credit card required

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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 ads

Link Facebook and Amazon Ads, then 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

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

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

Finally know if your ads are actually working.

Connect your ads

We find the signal

Get a clear read

Grow your readers

True cost per new reader, KU included

Which days actually made money

What a reader is really worth

Stop guessing. Start knowing.