--- title: "Affirm pay‑over‑time messaging vs Klarna On‑Site Messaging: Shopify app comparison" description: "Compare Affirm pay‑over‑time messaging and Klarna On‑Site Messaging on detected Shopify stores, App Store reviews, pricing, listed features and integrations." canonical_url: "https://shoplist.co/shopify-apps/compare/affirm-pay-over-time-messaging-vs-klarna-on-site-messaging" markdown_url: "https://shoplist.co/shopify-apps/compare/affirm-pay-over-time-messaging-vs-klarna-on-site-messaging.md" data_as_of: "Nov 3, 2026" --- # Affirm pay‑over‑time messaging vs Klarna On‑Site Messaging Shopify app comparison from Shoplist. Store counts as of Nov 3, 2026. ## At a glance - Klarna On‑Site Messaging is detected on 7.5× as many Shopify stores as Affirm pay‑over‑time messaging: 24,110 vs 3,197 as of Nov 3, 2026. - On the Shopify App Store: Affirm pay‑over‑time messaging 1.4 from 56 reviews and Klarna On‑Site Messaging 2.3 from 237 reviews. - Klarna On‑Site Messaging lists 7 features Affirm pay‑over‑time messaging’s listing doesn’t mention, including Announcement bar, Banner position, Mobile responsive. ## Adoption | Measure | Affirm pay‑over‑time messaging | Klarna On‑Site Messaging | Ahead | | --- | --- | --- | --- | | Detected stores | 3,197 — as of Nov 3, 2026 | 24,110 — as of Nov 3, 2026 | Klarna On‑Site Messaging | | Net store change, 28 days | \+7 — estimated | −67 — estimated | | | Stores added, 28 days | 61 — new and returning | 152 — new and returning | Klarna On‑Site Messaging | | Big-brand share | 15% — of stores of known size | 18% — of stores of known size | | | Top store categories | Apparel & Accessories, Home & Garden, Vehicles & Parts | Apparel & Accessories, Home & Garden, Health & Beauty | | | Top store countries | United States, Canada, Hong Kong | United Kingdom, United States, Italy | | ## Reviews | Measure | Affirm pay‑over‑time messaging | Klarna On‑Site Messaging | Ahead | | --- | --- | --- | --- | | App Store rating | 1.4 ★ | 2.3 ★ | Klarna On‑Site Messaging | | App Store reviews | 56 | 237 | Klarna On‑Site Messaging | | New reviews, 28 days | Not enough data | 3 | | | Reviewers a year or more in | Not enough data | Not enough data | | ## Pricing | Measure | Affirm pay‑over‑time messaging | Klarna On‑Site Messaging | Ahead | | --- | --- | --- | --- | | Free plan | Not listed | Not listed | | | Lowest paid monthly plan | No monthly plan listed | No monthly plan listed | | | Longest free trial | Not listed | Not listed | | | Plans listed | Not published | Not published | | ## Listing | Measure | Affirm pay‑over‑time messaging | Klarna On‑Site Messaging | Ahead | | --- | --- | --- | --- | | Shopify category rank | \#15 — in Advertising - Other | \#24 — in Banners | | | Shopify App Charts | \#2 in Advertising - Other | \#17 on the Shoplist 100 | | | Built for Shopify | No | No | | | Launched | Mar 25, 2020 | Jun 10, 2019 | | | Languages | 1 — English | 1 — English | | | Developer | Affirm | Klarna | | ## Listed features - 7 distinct features are listed across these App Store listings; 0 are listed by both. - Affirm pay‑over‑time messaging lists 0 of them (0%). - Klarna On‑Site Messaging lists 7 of them (100%). Listed only by Klarna On‑Site Messaging: Announcement bar, Banner position, Mobile responsive, Multi-announcement, Multi-language, Product page, Promotional. ### Coverage by App Store category | Category | Affirm pay‑over‑time messaging | Klarna On‑Site Messaging | | --- | --- | --- | | Banners | 0/7 | 7/7 | | Banners › Banner type | 0/4 | 4/4 | | Banners › Customization | 0/3 | 3/3 | A feature missing from a listing may still be supported; this compares what each App Store listing says. ## Integrations - Both list: Checkout. - Affirm pay‑over‑time messaging lists no platform the others don’t. - Klarna On‑Site Messaging lists no platform the others don’t. ## Pricing plans ### Affirm pay‑over‑time messaging Free ### Klarna On‑Site Messaging Free ## Frequently asked questions ### Which is more popular, Affirm pay‑over‑time messaging or Klarna On‑Site Messaging? Klarna On‑Site Messaging is detected on 7.5× as many Shopify stores as Affirm pay‑over‑time messaging: 24,110 vs 3,197 as of Nov 3, 2026. ### Which has better reviews, Affirm pay‑over‑time messaging or Klarna On‑Site Messaging? On the Shopify App Store: Affirm pay‑over‑time messaging 1.4 from 56 reviews and Klarna On‑Site Messaging 2.3 from 237 reviews. ### What features does each app list that the other doesn’t? Klarna On‑Site Messaging lists 7 the others don’t mention, such as Announcement bar, Banner position, Mobile responsive, Multi-announcement. A feature missing from a listing may still be supported; this compares what each App Store listing says. ### Are stores switching between Affirm pay‑over‑time messaging and Klarna On‑Site Messaging? 5 stores dropped one and added the other in the last 180 days. Which stores, and in which direction, is in Shoplist. ### Where does this comparison’s data come from? Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Nov 3, 2026; estimated figures are labeled. ## Links - [Affirm pay‑over‑time messaging vs Klarna On‑Site Messaging on Shoplist](https://shoplist.co/shopify-apps/compare/affirm-pay-over-time-messaging-vs-klarna-on-site-messaging) - [Affirm pay‑over‑time messaging on Shoplist](https://shoplist.co/shopify-apps/affirm-pay-over-time-messaging) ([Markdown](https://shoplist.co/shopify-apps/affirm-pay-over-time-messaging.md)) - [Klarna On‑Site Messaging on Shoplist](https://shoplist.co/shopify-apps/klarna-on-site-messaging) ([Markdown](https://shoplist.co/shopify-apps/klarna-on-site-messaging.md)) ## Methodology Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts for Affirm pay‑over‑time messaging and Klarna On‑Site Messaging are as of Nov 3, 2026. “Not detectable from storefronts” means an app leaves no storefront trace, so Shoplist can’t count its stores. A row names who is ahead only when every app has a measured, unestimated figure. See [data methodology](https://shoplist.co/data-methodology.md).