Affirm vs Shop Pay Installments
Updated · How we collect this data
Affirm runs on 1,184 live Shopify stores and Shop Pay Installments on 930. Here is how the two buy now, pay later tools compare on real adoption: by country, overlap, and the stores using each.
Which is more popular on Shopify, Affirm or Shop Pay Installments?
Affirm is more widely used on Shopify than Shop Pay Installments: we detect Affirm on 1,184 active stores (0.2% of all stores we track) and Shop Pay Installments on 930 (0.2%) as of October 2026, a ratio of about 1.3 to 1. 18 stores run both at the same time (1.9% of Shop Pay Installments stores), which usually means a migration in progress or each tool covering a different job. Shop Pay Installments leads in United Kingdom, Australia, Germany and 6 more of the top markets, while Affirm leads everywhere else among the largest Shopify countries. Both have their biggest market in United States, with 1,029 stores on Affirm and 591 on Shop Pay Installments. Well-known stores on Affirm without Shop Pay Installments include DTLR and Aventon Bikes, while Princess Polly and Skullcandy chose Shop Pay Installments. Adoption shows what stores actually choose; it does not measure price, features or support quality, so use it alongside a feature comparison.
At a glance
| Affirm | Shop Pay Installments | |
|---|---|---|
| Active Shopify stores | 1,184 | 930 |
| Share of all stores | 0.2% | 0.2% |
| Largest market | United States (1,029) | United States (591) |
| Most often used with | Meta Pixel (76.2%) | Meta Pixel (68.4%) |
| Stores using both | 18 | |
Affirm vs Shop Pay Installments by country
Share of each country's active Shopify stores using each tool, for the largest markets of either.
| Country | Affirm | Shop Pay Installments | Leader |
|---|---|---|---|
| United States | 0.6% (1,029) | 0.3% (591) | Affirm |
| Canada | 0.4% (106) | 0.2% (48) | Affirm |
| United Kingdom | 0% (9) | 0.1% (70) | Shop Pay Installments |
| Australia | 0% (5) | 0.1% (29) | Shop Pay Installments |
| Germany | 0% (4) | 0.1% (20) | Shop Pay Installments |
| Hong Kong SAR China | 0.1% (17) | 0% (5) | Affirm |
| Netherlands | 0% (2) | 0.1% (19) | Shop Pay Installments |
| France | 0% (1) | 0.1% (12) | Shop Pay Installments |
| India | 0% (0) | 0% (13) | Shop Pay Installments |
| Switzerland | 0% (0) | 0.3% (11) | Shop Pay Installments |
| Pakistan | 0% (1) | 0.1% (8) | Shop Pay Installments |
| Spain | 0% (0) | 0.1% (9) | Shop Pay Installments |
Top Shopify stores using both Affirm and Shop Pay Installments
| # | Store | Country | Theme | Products | Popularity |
|---|---|---|---|---|---|
| 1 | Emotiva Audio Corporation | United States · Franklin | Debut | 121 | Top 500k |
| 2 | Audio46 Headphone Store | United States · New York | NexGeek Sectioned | 3,853 | Top 1M |
| 3 | Hestan Culinary | United States · Vallejo | Expanse | 169 | Top 1M |
| 4 | Alto Med Supply | United States · SHERIDAN | Empire | 2,280 | Top 5M |
| 5 | AudioFormz | United States · Canton | Enterprise | 193 | Top 5M |
| 6 | Jumbileen | United States · Charlotte | Refresh | 80 | Top 5M |
| 7 | Mantra® | United States · Monarch Beach | Custom | 166 | Top 5M |
| 8 | Ascend | Canada · Brampton | Makro Ascend | 84 | Top 5M |
| 9 | SwapWear | United States · Austin | Paper | 1,106 | Top 5M |
| 10 | Baseball Mound Supply | United States · Newark | Custom | 1,781 | Top 10M |
Top stores using Affirm but not Shop Pay Installments
| # | Store | Country | Theme | Products | Popularity |
|---|---|---|---|---|---|
| 1 | DTLR | United States · Hanover | Debut | 25,000+ | Top 50k |
| 2 | Aventon Bikes | United States · Brea | Fastor | 396 | Top 50k |
| 3 | Turbo Brands Factory | Pakistan · Faisalabad | Symmetry | 5,460 | Top 50k |
| 4 | Secretlab US | United States · Dover | Custom | 162 | Top 100k |
| 5 | Teddy Baldassarre | United States · North Olmsted | Teddy Baldassarre | 3,151 | Top 100k |
| 6 | VICI | United States · Walnut Creek | SDG Shopify Skeleton | 10,460 | Top 100k |
| 7 | Shoe Palace | United States · Morgan Hill | Modular | 11,364 | Top 100k |
| 8 | REP Fitness | United States · Westminster | Hydrogen | 740 | Top 100k |
| 9 | Blackstone Products | United States · Logan | Alchemy | 440 | Top 100k |
| 10 | Wacoal | United States · Lyndhurst | WearLively 1.5 | 1,264 | Top 100k |
Top stores using Shop Pay Installments but not Affirm
| # | Store | Country | Theme | Products | Popularity |
|---|---|---|---|---|---|
| 1 | Princess Polly | United States · West Hollywood | Princess Polly by Pivot | 17,720 | Top 50k |
| 2 | Skullcandy | United States · Fairburn | Conflagaration | 50 | Top 100k |
| 3 | REEF | United States · Watertown | Custom | 1,489 | Top 100k |
| 4 | Redragonshop | United States · Las Vegas | Dawn | 597 | Top 100k |
| 5 | Atlas Stationers | United States · Chicago | Enterprise | 8,688 | Top 100k |
| 6 | Orthora Footwear | United States · Miami | Dawn | 124 | Top 100k |
| 7 | Animal Pak | United States · New Brunswick | Custom | 88 | Top 500k |
| 8 | Bluefly | United States · Golden Beach | Upscale | 25,000+ | Top 500k |
| 9 | Dr. Squatch | United States · MARINA DEL REY | Custom | 490 | Top 500k |
| 10 | BIRDY GREY | United States · Los Angeles | Custom | 15,295 | Top 500k |
Affirm usage data · Shop Pay Installments usage data · Affirm alternatives · Shop Pay Installments alternatives
Counts are live Shopify stores where each tool is detected in homepage code. They measure adoption, not quality or price. Methodology.