Entrepreneurs spend unholy amounts of time growing their business. Minding their health can easily move to the bottom of their list of priorities. How does an author of a nutrition book make busy entrepreneurs pay attention to this important issue? With a compelling cover, of course.

In this PickFu poll, the author tested three covers with an audience of small-business owners.

Option A features a row of apples, including a shiny golden one, and a green-and-white color scheme. Options B and C ditch the apples for arrows, bold colors, and energetic fonts.

Can you guess which one won?

Humor is one of the hardest book genres to write. What an author finds funny, the reader may not. That goes for what’s on a humor book cover.

No matter the genre, every author knows how important a book cover is. Which is why this author took to PickFu to test two covers for his humor book, Yes, Camels Really Do Spit: Things I’ve Learned the Hard Way.

And yes, camel spit plays a role in the cover art.

Can you guess which one won?

If you’re writing a book aimed at people who have a certain religious affiliation and you want to get the title and subtitle just right, split test your options with a targeted audience. That’s what one author did in this PickFu poll, choosing 100 respondents who identify as Christians. The results are intriguing.

Here are the four titles and subtitles:

• The Gospel / An Understanding That Could Change Your Life (Option A)
• GameChanger / A Gospel Understanding That Changed My Life (Option B)
• The Gospel / An Understanding That Will Change Your Life (Option C)
• And Now My Eye Sees Thee / A Gospel Understanding That Changed My Life (Option D)

Can you guess which one won?

Reading a book about losing a pet might help you grieve the loss of your own, especially if you’re a kid. For one author, deciding on a children’s book title for a story about losing a dog was a challenge of its own.

So, the author put three options up in this PickFu poll and asked 50 dog owners which title made them more likely to buy the book:

• A: When Winnie Went Away
• B: Where Winnie Went
• C: After Winnie Went Away

The titles are similar. But, as the results of the poll show, one word can have a big impact on potential readers.

Can you guess which one won?

When you’ve narrowed a book cover down to two nearly identical designs, how do you choose the final version? In the case of this author’s PickFu poll, small details made all the difference.

For a book titled Painful: One doctor’s fight against the Opioid Epidemic and Big Pharma, the author asked an audience of mystery and crime readers the question, “Which book cover is more appealing?”

Both covers feature an image of a pill bottle. In Option A, the bottle is on its side and the pills are spilling out. In Option B, the bottle is upright, with the pills gathered neatly around.

Can you guess which one won?

In the oversaturated market of fitness books, one of the best ways to choose a book cover that will stand out is to split test your choices with a highly specific audience.

That’s what one author recently did on PickFu with three potential book designs. The author asked a target audience of people who take nutritional health supplements daily and who read self-help books, “Which book would you pick up in a store?”

The books have the same title and subtitle: 50 Fitness Tips You Wish You Knew: The Ultimate Collection of Tips, Tricks, and Hacks to Transform Your Mind, Body, and Life.

But the covers are wildly different.

OK, boomer. You’ve written a memoir with valuable advice for younger generations. How do you know your book title will make them want to read it?

That’s the question this author took to PickFu in a split test of two potential titles. The author asked a target audience of women between the ages of 18 and 34, “Which book title would you rather read and why?”

The titles were: Advice from the Bottom of a Boomer’s Heart and Back Away from the Cookies: And Other Advice to My Younger Self.

Can you guess which one won?