Plugin of the Day · Sunday 8 November 2026
Klarna On-Site Messaging: a payment line under the price, from an app rated 2.3 stars
Klarna On-Site Messaging puts a Klarna payment line on a product page, under the price. On the Sunday Jacket at Tentree, the line reads "From $15/month, or 4 payments at 0% interest with Klarna", with a Check purchase power link beside the Klarna badge. The app is free, one tracker counts it on about 252,000 Shopify stores, and its own listing carries 2.3 stars from 113 reviews.
- Platform
- Shopify app, free to install
- Listing
- 2.3 stars, 113 reviews (8 Nov 2026, Shopify App Store)
- Installs
- 252,491 stores (StoreLeads count, date not shown)
- Store seen
- Tentree, Sunday Jacket page
- Read on
- 8 Nov 2026, 1440px and 390px
What the listing says the app does
The listing describes the app as one for merchants with an active Klarna Payments integration. It says the app will not add Klarna as a payment method, and that it shows messages about Klarna as a payment option throughout the shopping journey. The price is free. The listing carries the note "Popular with stores like yours", with "Based in United States" beside it, and it lists Checkout and Shopify Admin as the places it works with.
What we saw on the Sunday Jacket page
- The line under the price. "From $15/month, or 4 payments at 0% interest with Klarna" sits beside the Klarna badge, with a Check purchase power link underneath.
- A placement tag carrying the price. The page code holds a Klarna placement element with a data key of credit-promotion-badge, and a purchase amount of 16800. That is $168.00 written as cents, so the line is built from the product's own price.
- A Klarna FAQ link. The product's list of links includes "klarna FAQ", beside the returns and exchanges link.
- The line before the colour choice. On the desktop page, the Klarna line comes before the colour and size rows.
The listing's numbers, and why they differ
Counts for this app differ by source and by date. On the App Store listing we read on 8 November, the rating was 2.3 from 113 reviews. A tracker named StoreLeads counts 116 reviews at an average of 2.2, and 252,491 installed stores, without giving the date of its count. A third-party review site from late September quoted 2.4 stars from 115 reviews. We use the listing for the rating and the tracker for the install count, and we say which is which.
What the reviews complain about
The reviews on the listing are mostly about setup and support, not about the look of the line. One reviewer reports an error every time they try to connect, and says that Klarna's support replies with generic setup links. Another reports that the messaging did not show on a live store with the theme they use, and says the preview looked right. One reviewer says the app was installed twice, once from Shopify and once in Klarna's own portal, and that the duplicate caused the fault. Klarna's replies in the threads ask merchants to check their placements and their country settings.
How it is built
The Sunday Jacket page loads Klarna's own web script from js.klarna.com, with a client identifier in the tag. The line is drawn by a custom element named klarna-placement, which holds the product's price in cents. The page also carries a stylesheet from Klarna's font host. We did not trace which part of the app writes the placement tag, so this entry describes the placement as it appears in the page, not the app's internal workings.
What a shopper gets, step by step
- Sees a payment option under the price, before choosing a colour or size.
- Can follow the Check purchase power link for a Klarna estimate. We did not click it.
- Pays with Klarna at checkout, if the store has Klarna set up there. We did not reach checkout.
Who else runs it
We did not confirm a second store running this app in this reading, so this section names no other store. The Tentree page is the only live store we checked for the app today.
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What we did not check
We did not start a checkout, create a Klarna account, follow the Check purchase power link, or submit a support request. We did not read every review on the listing. The counts above are as read on 8 November 2026 and may move.
Where to look
The app is at apps.shopify.com/klarna-on-site-messaging. The store page is at tentree.com, Sunday Jacket. Tentree is also a Commerce Site of the Day on its own page, read on 3 November 2026.