Built for indie authors · Results in 24–48 hours

Which cover
sells your book?

Don't just pick a winner — learn why it wins. We test your cover concepts with real readers in your genre and show you exactly which elements drive clicks: imagery, typography, color, composition.

How It Works
Element Impact Score
Example report — illustrative data
Cover imagery +42%
Title typography +28%
Color palette +17%

Sample of the element-level report you receive.

Every cover decision
is a gamble

01

Your designer sent three cover concepts. You picked your favorite — but your favorite isn't your reader's favorite.

02

A poll told you Cover B won. It didn't tell you why — so you can't apply the lesson to your next book, or your series rebrand.

03

Your ads underperform and you can't tell if it's the hook, the targeting, or the cover doing the damage.

Start with your cover.
Test anything.

Book cover testing is fully built out today. The same element-level methodology works for every creative decision below.

From guess to data
in three steps

1

Upload your cover concepts

Upload 2–12 cover concepts — different typography, imagery, or color treatments. Tag the elements you want to measure.

2

Real readers in your genre choose

We show your concepts to 50-200 real readers who read in your genre. They choose preferences, revealing which elements drive clicks.

3

Get your element-level report

In 24-48 hours, see a ranked report of winning elements with directional confidence scores. Know exactly what to keep, change, or test next.

Limited to the first 10 authors

Founding Authors Program

We're launching with 10 founding authors. Get a free Standard study ($249 value) on your next cover — in exchange for letting us publish the results as a public case study. First come, first served.

Simple per-study pricing

Per-study pricing. No subscription. Pay only for what you use.

Quick Look
$99 /study

Perfect for quick validation

  • 50 readers
  • Up to 5 variants
  • Element-level report
  • Results in 24-48 hours
Most Popular
Standard
$249 /study

Best for most cover decisions

  • 100 readers
  • Up to 8 variants
  • Element-level report
  • Genre/demographic breakdowns
  • Results in 24-48 hours
Deep Dive
$499 /study

For high-stakes decisions

  • 200 readers
  • Up to 12 variants
  • Everything in Standard
  • Priority support

Why not just run a poll?

What You Can Isolate
A poll or head-to-head:

Tests one full cover against another, as a whole.

Choice-based analysis:

Isolates imagery, typography, and color within the same study.

Time to Results
24-48
hours, from uploaded concepts to a ranked report

No lengthy test cycles to wait on.

Insight Level
A poll:

"Cover B won."

Choice-based analysis:

"Cover B won — driven mostly by typography, with imagery playing a smaller role."

Knowledge Reuse
A poll:

Start over for each cover.

Choice-based analysis:

Build a reusable insights library across your catalog.

Get insight you can act on — not just a winner. Choice-based analysis uses proven market research methodology, with directional confidence scores instead of a coin-flip verdict — now available for book covers.

Your next cover decision,
backed by real readers.

See exactly which cover elements drive clicks in 24-48 hours.
No subscription. Pay only for what you use.

See Pricing