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Whoosh vs Superspeed: do you want a dollar report or a sales test?

Someone adds your raw honey to the cart, opens checkout, and leaves. Superspeed tells you what that cost in dollars. Whoosh makes your other apps wait for the honey photo and tests the change on your own sales. One walk to checkout on your phone tells you which row is yours.

· Founder, Whoosh

7 min read

Light Whoosh cover with the Core Web Vitals chip and the title Whoosh vs Superspeed: do you want a dollar report or a sales test?

In short

Superspeed puts a dollar figure on ghost checkouts, meaning shoppers who start checkout and leave, and on slow pages. Whoosh doesn't show that figure. It makes your other apps wait until the product photo is up, gets the likely next page ready, and tests itself on half your visits against your sales. Superspeed is the cheaper start under 200,000 page views a month and edits your theme. Whoosh is one price at any traffic and does not copy the theme.

  • Superspeed's listing promises a dollar figure for ghost checkouts, which are shoppers who start checkout and leave, and for slow pages. Whoosh does not show that figure.
  • Whoosh makes the popup, chat, and reviews wait until the honey photo is on screen, readies the likely next page, and runs a 50/50 test on your own sales.
  • Superspeed is the better buy when you want the dollar report and a cheaper start under 200,000 page views, and you are fine with an app editing your theme.
  • Whoosh is the buy when a popup or chat beats the photo and you want the result measured as sales, at one price however busy the store gets.
  • Add the honey to the cart and open checkout on your phone. What you hit on the way picks the row.
On this page
  1. The honey went into the cart, and then they left
  2. What each app does with the honey shopper
  3. A dollar report or a sales test
  4. Add the honey to the cart and open checkout on your phone

The honey went into the cart, and then they left

You sell raw honey, and the jar is what most people come to your store for. Someone opens the honey page on their phone, adds a jar to the cart, taps Checkout, and then closes the tab without paying. Superspeed and Whoosh both want that sale back, and they go after it from opposite ends of the visit.

Superspeed puts a dollar figure on it. Its App Store listing promises to identify ghost checkouts, which is a shopper who starts checkout and leaves, and to work out the dollars lost to slow pages. Whoosh doesn’t show you that figure. We make Whoosh, so read the table with that in mind.

What Whoosh does happens earlier, on the honey page itself. It makes your other apps wait until the honey photo is on screen, gets the page the shopper is likely to open next ready, and runs a 50/50 test on your own sales. Checkout is Shopify’s own page, and Whoosh never gets it ready ahead of time.

What each app does with the honey shopper

Let’s start with Superspeed, because its promise is the one on the App Store screen. It watches what real visitors go through on your store, then points at the specific app, script, or image it thinks is costing you sales. A script is the small program another company’s app adds to your page, like the one that draws your chat bubble.

Then it fixes what it found. The listing says it will “fix the exact code slowing you down”, with Action Plans on the cheapest plan, templates on Growth for how fast the main photo shows up (people call that moment LCP), and a full speed library on Pro.

To make those changes, Superspeed asks permission to edit your theme, your pages, and your script tags, so it works inside the files that make up your store’s design.

Superspeed’s features page also says it holds back heavy apps from other companies, so Whoosh isn’t alone in making a popup wait its turn.

Now Whoosh. When the honey page opens, your email popup, chat bubble, and review stars start loading too, each one a program from another company. Whoosh holds those back until the honey photo is up, and it fetches that photo early, because it knows from real shoppers which photo is the big one on the page. You keep every one of those apps.

It also gets the page they’re most likely to tap next ready before they tap it, and it never does that for the cart, checkout, or account pages. There’s no code to write, and it doesn’t copy your theme.

So how do you know it helped? Whoosh splits your visitors 50/50, half with it on and half with it off, and compares what each half bought. That’s a sales result from your own store, not a figure for what slow pages cost you.

What you getWhooshSuperspeed
A dollar figure on shoppers who leaveDoes not show oneGhost checkouts and slow pages, in dollars, per the listing
What it changes on the pageHolds other apps until the photo is up; fetches that photo early; readies the likely next pageFixes the code it finds; Action Plans on Lite, templates on Growth, full speed library on Pro
Your themeNo code; does not copy the theme; never readies cart, checkout, or accountAsks to edit your theme, pages, and script tags
How you see it worked50/50 test on your own store, compared on salesDollars lost to ghost checkouts and slow pages, per the listing
PriceSmart App Loading US$99/mo, AI Page Preloading US$99/mo, Whoosh Max US$149/mo; 7-day free trial; same at any traffic; App Store listingLite US$29/mo to 200k page views; Growth US$49/mo to 1M; Pro US$99/mo to 3M; Business US$249/mo to 10M; 14-day free trial; App Store listing
The better buy whenA popup or chat beats the honey photo, and you want half your visits measured as salesYou want the dollar report and a cheaper start under 200k page views, and are happy for it to edit the theme
Two panels: Superspeed putting a dollar figure on ghost checkouts and slow pages, beside Whoosh holding other apps behind the product photo and testing on half the visits
Superspeed reports what the leaving cost. Whoosh changes what the shopper sees first and measures it in sales.

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A dollar report or a sales test

Here’s the trade-off, plainly. Superspeed tells you what the leaving cost. Whoosh shows you what changed when half your visits got the fix.

Superspeed is the better buy in two places. If honey shoppers are getting all the way to checkout and you want that loss written in dollars, the report is its job, and Whoosh doesn’t do it. And if the store is small, Lite at US$29 a month covers up to 200k monthly page views on the App Store listing, which is a cheaper start than any Whoosh plan.

A page view is one person opening one page, so a shopper who opens your home page, the honey, and the cart counts three. As the store grows, the same listing moves you to Growth at US$49 a month past 200k, Pro at US$99 past 1M, and Business at US$249 for up to 10M. Whoosh’s price in the table stays where it is, however busy the store gets.

One thing to check before you settle on Lite. The listing names ghost checkouts in its summary but not in any single plan’s list, so ask Superspeed which plan carries that report. The “fix any theme” part, the full speed library, sits on Pro.

The theme is the other half of the pick. Superspeed edits the code it finds, which is how it can fix a heavy theme, and it means an app is changing your store’s design files.

Whoosh doesn’t copy the theme or ask you to write code, so it won’t fix a heavy theme for you either. If the theme is the slow part, that’s not our job, and the wider speed app comparison covers the apps that work on it.

I know what you’re thinking. Why not run both, and get the report and the waiting? You can, as long as only one of them is holding back your popup and chat. Ask Superspeed’s team whether you can switch its holding back off and keep the report, because two apps both delaying the same popup is how it quietly stops opening.

Add the honey to the cart and open checkout on your phone

Before you install either app, walk the sale yourself. Pick up your phone and open the honey’s live product page in a private tab, using the same link a shopper gets, not the theme editor, which can hide your apps.

Watch the first moments closely. Does the honey photo arrive first, or does a signup popup or a chat bubble get there before it? Write down which one won.

Then add a jar to the cart, open the cart, and tap Checkout. Shopify’s checkout page should open with the honey and its price in it. That page is Shopify’s, and no app should be holding back its payment buttons.

Four steps: open the live honey product page on a phone, watch what arrives before the photo, add the jar to the cart and open checkout, then pick the row
A popup before the photo is the wait Whoosh moves. A smooth walk and still no order is the loss Superspeed reports.

Now read what you saw. If the honey photo came first and the walk to checkout was smooth, the honey page isn’t what’s turning people away. If your carts still aren’t turning into orders, people are getting that far and leaving, and if you want a report of those dollars, Superspeed is the row.

If a popup or chat was what you hit before the honey photo, that’s the wait Whoosh moves. If you want half your visits measured as sales, with the theme left as it is, Whoosh is the row.

Whichever one you install, do the same walk again a week later on the same phone. Tap the popup and the chat on the way past, then go from the honey photo all the way to Shopify’s checkout page, so you know the jar can still be bought.

Questions merchants ask

What is a ghost checkout?

It is a shopper who starts checkout and leaves without paying. Superspeed's listing says it identifies them and works out the dollars lost to slow page loads. Whoosh does not report on ghost checkouts. It works earlier, on the product page, and measures itself with a 50/50 test on your sales.

Can I run Superspeed and Whoosh on the same store?

You can, as long as only one of them holds back your other apps. Superspeed says it delays heavy apps too, so ask its team whether that part can be switched off while you keep the report. Two apps delaying the same popup or chat can stop it opening. Afterwards, tap the popup, the chat, and Add to cart on your phone.

What counts as a page view on Superspeed's plans?

Each time someone opens a page on your store. A shopper who opens the home page, the honey, and the cart counts three. Superspeed's App Store listing caps each plan by monthly page views, so a busy month can move you up a plan.

Will either app change my checkout?

Checkout is Shopify's own page. Whoosh never gets checkout, cart, or account pages ready ahead of time. Superspeed's listing promises better checkout conversion and asks permission to edit your theme, pages, and script tags, so ask its team what it changes. With either app, place a test order on your phone after you switch it on.

Sources (3, checked 12 Oct 2026)
  1. 1 Superspeed: Conversion & Speed on the Shopify App Store (apps.shopify.com, checked 12 Oct 2026)
  2. 2 Whoosh on the Shopify App Store (apps.shopify.com, checked 12 Oct 2026)
  3. 3 Superspeed automated speed optimization features (superspeedapp.com, checked 12 Oct 2026)

We make Whoosh, so this comparison has our app in it. Prices and plans come from both Shopify App Store listings checked on 12 Oct 2026, and the jar of raw honey is an example, not a real store.

How posts are chosen, sourced, checked and corrected: our editorial policy.

Edward Cameron

Written by Founder, Whoosh, Sydney, Australia

Edward Cameron is the founder of Whoosh, the Shopify speed app made in Sydney and on the Shopify App Store since August 2025. He writes here about what slows a Shopify product page and how to check it on your own store.

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