Pattern #41: Sticky Call To Action

Pattern #41  Tested 20 timesFirst tested by Phillip Barnes Recently tested by Jay Kim on Jan 30, 2025

Based on 20 Tests, Members See How Likely Version B Wins Or Loses And By How Much

LOSSES
-5
-4
-3
-2
-1
FLAT
+1
+2
+3
+4
+5
WINS

Measured by the sum of negative and positive tests.

A B
Sticky Call To Action (Variant A) Sticky Call To Action (Variant B)

Expected Median Effects Of B

?

Progression

(12 tests)

?

Leads

(1 tests)

?

Signups

(3 tests)

?

Engagement

(2 tests)

?

Sales

(14 tests)

-

Revenue

-

Retention

-

Referrals

?

ANY PRIMARY

(20 tests)

Tested on

Tests

Pattern #41: Sticky Call To Action
Was Tested On Thomasnet.com by Kyle Phillips

Added

Isolated

Test # 326 on Thomasnet.com by $conducted_test->test->user_->first_name . ' ' . $conducted_test->test->user_->last_name Kyle Phillips    Nov 25, 2020 Test link

Find Out How It Did With 7,999 Visitors

  • Measured by clicks on "Next Story" button

Zoom In
  • ?% (? successes out of ? visits)
A
  • ?% (? successes out of ? visits)
B
Content

In this simple experiment on an article page, the variation slid out a sticky call to action linking to the next article. The sliding interaction triggered after some scrolling threshold (around 1000px or so). Afterwards, the sticky call to action maintained its floating position. The experiment measured clicks on this "next article" button.

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The Same Pattern Was Also Tested Here

Added

Isolated

Test # 574 on Myer.com.au by $conducted_test->test->user_->first_name . ' ' . $conducted_test->test->user_->last_name Jay Kim    Jan 30, 2025 Test link

Find Out How It Did With 524,153 Visitors

  • Measured by adds to cart

  • Measured by completed orders

Zoom In
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
A
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
B
Product

In this experiment published by Jay Kim, a sticky add to cart button was added on mobile product detail pages. It appeared after the scroll depth past the original add to cart button. Impact to adds to cart and completed sales was measured.

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Added

Isolated

Test # 573 on Online.metro-cc.... by $conducted_test->test->user_->first_name . ' ' . $conducted_test->test->user_->last_name Andrey Andreev    Jan 28, 2025 Test link

Find Out How It Did With 6,527 Visitors

  • Measured by checkout visits

  • Measured by completed sales

Zoom In
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
A
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
B
Shopping Cart

In this experiment, a floating "Place order" button was added to a mobile shopping cart screen. Impact on progression (to checkout) and sales was measured.

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Added

Isolated

Test # 572 Jan 27, 2025 Test link

Find Out How It Did With 1,320 Visitors

  • Measured by clicks on button

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  • ?% (? successes out of ? visits)
A
  • ?% (? successes out of ? visits)
B
Product

In this experiment from GuessTheTest.com, the control variation only showed the primary add-to-cart button further down on the page. The variation however turned the button into a floating one once users scrolled on the page. Impact on button clicks was measured.

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Added

Isolated

Test # 557 on Obsbygg.no by $conducted_test->test->user_->first_name . ' ' . $conducted_test->test->user_->last_name Joachim Furuseth    Oct 17, 2024 Test link

Find Out How It Did With 349,103 Visitors

  • Measured by completed transactions

Zoom In
  • ?% (? successes out of ? visits)
A
  • ?% (? successes out of ? visits)
B
Product

A sticky floating navigation bar was tested on product pages. The floating navigation contained: the product name, price and an add to cart button (add to cart). Impact on sales was measured. (Desktop Only)

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Added

Isolated

Test # 558 on Obsbygg.no by $conducted_test->test->user_->first_name . ' ' . $conducted_test->test->user_->last_name Joachim Furuseth    Oct 17, 2024 Test link

Find Out How It Did With 1,002,479 Visitors

  • Measured by completed transactions

Zoom In
  • ?% (? successes out of ? visits)
A
  • ?% (? successes out of ? visits)
B
Product

A sticky floating navigation bar was tested on product pages. The floating navigation contained: the product name, price and an add to cart button (add to cart). Impact on sales was measured. (Mobile Only)

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Added

Isolated

Test # 554 on Obs.no by $conducted_test->test->user_->first_name . ' ' . $conducted_test->test->user_->last_name Joachim Furuseth    Sep 30, 2024 Test link

Find Out How It Did With 127,871 Visitors

  • Measured by completed transactions

Zoom In
  • ?% (? successes out of ? visits)
A
  • ?% (? successes out of ? visits)
B
Product

A sticky floating navigation bar was tested on product pages. The floating navigation contained: the product name, price and two add to cart buttons (add to cart; pickup in store). Impact on sales was measured. (Desktop Only)

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Added

Isolated

Test # 555 on Obs.no by $conducted_test->test->user_->first_name . ' ' . $conducted_test->test->user_->last_name Joachim Furuseth    Sep 30, 2024 Test link

Find Out How It Did With 534,185 Visitors

  • Measured by completed transactions

Zoom In
  • ?% (? successes out of ? visits)
A
  • ?% (? successes out of ? visits)
B
Product

A sticky floating navigation bar was tested on product pages. The floating navigation contained: the product name, price and two add to cart buttons (add to cart; pickup in store). Impact on sales was measured. (Mobile only)

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Added

Isolated

Test # 460 on Backstage.com by $conducted_test->test->user_->first_name . ' ' . $conducted_test->test->user_->last_name Stanley Zuo    Mar 21, 2023 Test link

Find Out How It Did With 1,057,325 Visitors

  • Measured by clicks on join button

  • Measured by account creations

  • Measured by checkouts

Zoom In
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
A
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
B
Listing

In this experiment, a floating top navigation was shown with a "Join" button. In the control, the navigation was only visible at the top of the page. Also keep in mind that signup starts were also triggered throughout multiple CTAs throughout the page and from particular job detail pages. The a/b test ran on a listing page of Backstage - a casting call job site. Impact on signups  and checkouts was measured.

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Added

Isolated

Test # 444 Nov 30, 2022 Test link

Find Out How It Did With 1,483,721 Visitors

  • Measured by completed transactions

Zoom In
  • ?% (? successes out of ? visits)
A
  • ?% (? successes out of ? visits)
B
Product

In this experiment, a floating add-to-cart with two product choices (color and size) were added on a product page. This appeared only after scrolling past the existing / embedded product selection buy box.

The floating add-to-cart widget had another layer of complexity in that it allowed customers to make a size and color selection with an expandable fly out. Making a selection would also append the total price to the add-to-cart button label.

Impact on total transactions was measured.

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Added

Isolated

Test # 441 Nov 23, 2022 Test link

Find Out How It Did With 67,618 Visitors

  • Measured by completed transactions

Zoom In
  • ?% (? successes out of ? visits)
A
  • ?% (? successes out of ? visits)
B
Product

In this experiment, a floating sticky bar was added on product pages. The sticky elements only appeared after users scrolled beyond the fixed buy box  area that is relatively high on the page (visible on the control screenshot). The sticky bar contained three elements: a button to configure up to three product choices, a flavor selection pulldown, and the add-to-cart button. 

In the variation, when users clicked on the flavor pulldown three things happened. First, they were anchored back to the top of the buy box. Second, the floating sticky disappeared. And third, the flavors pulldown automatically expanded (overlapping the original primary add-to-cart button).

The control did not have any of the sticky behaviors.

Impact to total sales was measured.

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Replaced

Isolated

Test # 425 by $conducted_test->test->user_->first_name . ' ' . $conducted_test->test->user_->last_name Jakub Linowski    Aug 03, 2022 Test link

Find Out How It Did With 8,174 Visitors

  • Measured by adds to cart

  • Measured by completed sales

Zoom In
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
A
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
B
Product

In this experiment, the complete buy box on a product detail page, floated along as users scrolled through the long screen. The variation made sure the product choice and order now button was always visible. Impact on adds-to-cart and sales was measured.

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Added

Isolated

Test # 297 on Trydesignlab.com by $conducted_test->test->user_->first_name . ' ' . $conducted_test->test->user_->last_name Daniel Shapiro    May 04, 2020 Test link

Find Out How It Did With 19,954 Visitors

  • Measured by visits to enrollment page

  • Measured by completing a transaction

Zoom In
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
A
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
B
Home & Landing

In this experiment, a sticky "Enroll" button was shown on a course landing page. The button lead to a payment funnel to allow enrolling/paying for a course. The exeperiment measured inital progression into this funnel as well as the deeper completed sales metric.

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Added

Isolated

Test # 264 on Kenhub.com by $conducted_test->test->user_->first_name . ' ' . $conducted_test->test->user_->last_name Niels Hapke    Oct 05, 2019 Test link

Find Out How It Did With 50,572 Visitors

  • Measured by visits to pricing page

  • Measured by successful premium subscriptions

Zoom In
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
A
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
B
Global

In this experiment users saw a sticky bar advertising the benefits of a Premium account across the bottom of the website, wherever they navigate. The sticky call to action appeared with a 4 second delay and was floating.

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Replaced

Isolated

Test # 247 on Thomasnet.com by $conducted_test->test->user_->first_name . ' ' . $conducted_test->test->user_->last_name Julian Gaviria    Jun 13, 2019 Test link

Find Out How It Did With 76,900 Visitors

  • Measured by visits to signup landing page

  • Measured by visits to signup landing page

Zoom In
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
A
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
B
Content

In this experiment, the same message (with a link) for signing up to a newsletter was shown in two distinct ways. The control (A) showed the signup message as inline one that preceded the content of the article at the very top. The variant showed the same signup message as a scroll-delayed sticky interaction at the bottom of the screen. The background color of the B variant was also inverted to match the style of the footer.

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Added

Isolated

Test # 217 on Thomasnet.com by $conducted_test->test->user_->first_name . ' ' . $conducted_test->test->user_->last_name Julian Gaviria    Jan 03, 2019 Test link

Find Out How It Did With 158,023 Visitors

  • Measured by visits to registration form

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  • ?% (? successes out of ? visits)
A
  • ?% (? successes out of ? visits)
B
Home & Landing

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Added

Isolated

Test # 134 on Kenhub.com by $conducted_test->test->user_->first_name . ' ' . $conducted_test->test->user_->last_name Niels Hapke    Dec 14, 2017 Test link

Find Out How It Did With 29,743 Visitors

  • Measured by visits to pricing page

  • Measured by premium sales

Zoom In
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
A
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
B
Product

In this beautiful test, the key change was the introduction of a larger call to action linking to a premium / upgrade screen. The call to action was placed on the left sidebar which was floating. This is a great example of providing visibility to important elements by making them persistent.

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Added

Isolated

Test # 132 on Sjvc.edu by $conducted_test->test->user_->first_name . ' ' . $conducted_test->test->user_->last_name Phillip Barnes    Dec 12, 2017 Test link

Find Out How It Did With 1,437 Visitors

  • Measured by clicks on CTA to form

  • Measured by lead form submissions

Zoom In
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
A
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
B
Home & Landing

In this test, a footer with a button to a lead form was turned into a floating one.

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Added

Isolated

Test # 64 on Goodui.org by $conducted_test->test->user_->first_name . ' ' . $conducted_test->test->user_->last_name Jakub Linowski    Jan 01, 2017 Test link

Find Out How It Did With 35,058 Visitors

  • Measured by visits to any of the 5 nav links

  • Measured by successful newsletter signups

Zoom In
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
A
  • ?% (? successes out of ? visits)
  • ?% (? successes out of ? visits)
B
Home & Landing

In this experiment, we showed a sticky navigation bar with 5 actions such as (newsletter signup, and visiting certain landing pages). Upon completion of each task, the navigation would transform into a completed state while using cookies to store it for future reference.

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Leaks

Leak #98 from Etsy.com   |   Oct 16, 2023 Product

One Possible Reason Why Etsy's Floating Buy Box UI Was Rejected

A - Aug 3, 2023
B - Aug 3, 2023 REJECTED

Etsy recently ran an experiment were they floated their buy box on product detail pages. It's a pattern with a pretty good track record of delivering positive results across past experiments. But as many patterns, it doesn't always win. And in Etsy's case, two months after first detecting their experiment, it also seems that they might have rejected their variation - hinting at a superior control. View Leak

-0.5 Evidence

For each pattern, we measure three key data points derived from related tests:

REPEATABILITY - this is a measure of how often a given pattern has generated a positive or negative effect. The higher this number, the more likely the pattern will continue to repeat.

SHALLOW MEDIAN - this is a median effect measured with low intent actions such as initiating the first step of a lengthier process

DEEP MEDIAN - this is derived from the highest intent metrics that we have for a given test such as fully completed signups or sales.