Websites using Flex
Flex is the holistic solution for accepting HSA/FSA
Flex is currently installed on 577 websites.
In this report
Download a complete list of websites using Flex with a paid account.
Create a free account to get a feel for the data we provide.
Flex Usage Over Time
Total websites with Flex installed, measured weekly.
| Week | Installs |
|---|---|
| 2025-06-14 | 1 |
| 2025-06-21 | 2 |
| 2025-06-28 | 2 |
| 2025-07-05 | 3 |
| 2025-07-12 | 3 |
| 2025-07-19 | 4 |
| 2025-07-26 | 4 |
| 2025-08-02 | 5 |
| 2025-08-09 | 5 |
| 2025-08-16 | 5 |
| 2025-08-23 | 6 |
| 2025-08-30 | 7 |
| 2025-09-06 | 6 |
| 2025-09-13 | 7 |
| 2025-09-20 | 7 |
| 2025-09-27 | 8 |
| 2025-10-04 | 8 |
| 2025-10-11 | 10 |
| 2025-10-18 | 10 |
| 2025-10-25 | 10 |
| 2025-11-01 | 10 |
| 2025-11-08 | 10 |
| 2025-11-15 | 10 |
| 2025-11-22 | 11 |
| 2025-11-29 | 11 |
| 2025-12-06 | 11 |
| 2025-12-13 | 11 |
| 2025-12-20 | 11 |
| 2025-12-27 | 13 |
| 2026-01-03 | 14 |
| 2026-01-10 | 14 |
| 2026-01-17 | 15 |
| 2026-01-24 | 15 |
| 2026-01-31 | 12 |
| 2026-02-07 | 14 |
| 2026-02-14 | 15 |
| 2026-02-21 | 17 |
| 2026-02-28 | 17 |
| 2026-03-07 | 18 |
| 2026-03-14 | 18 |
| 2026-03-21 | 20 |
| 2026-03-28 | 22 |
| 2026-04-04 | 22 |
| 2026-04-11 | 22 |
| 2026-04-18 | 22 |
| 2026-04-25 | 22 |
| 2026-05-02 | 22 |
| 2026-05-09 | 22 |
| 2026-05-16 | 23 |
| 2026-05-23 | 22 |
| 2026-05-30 | 22 |
| 2026-06-06 | 18 |
| 2026-06-13 | 17 |
| 2026-06-20 | 17 |
| 2026-06-27 | 17 |
| 2026-07-04 | 16 |
| 2026-07-11 | 16 |
| 2026-07-18 | 16 |
| 2026-07-25 | 16 |
| 2026-08-15 | 16 |
| 2026-08-22 | 16 |
| 2026-08-29 | 16 |
| 2026-09-05 | 15 |
| 2026-09-12 | 16 |
| 2026-09-26 | 567 |
| 2026-10-03 | 577 |
Top Websites Using Flex
Here are the top 5 websites running Flex ordered by rank.
| Domain | Title | Rank |
|---|---|---|
| bluemercury.com | Bluemercury | Skincare, Makeup, Hair Care, Fragrance & More | 2,662 |
| levoit.com | Air Purifiers, Humidifiers, Tower Fans & Vacuums | Levoit | 3,351 |
| paireyewear.com | Pair Eyewear: Customizable Glasses and Sunglasses | 3,695 |
| momcozy.com | Momcozy: High-Quality Care for Moms and Babies | 3,926 |
| humehealth.com | Hume | Better Metabolic Health - Tap Into Your Body's Data – Hume Health | 5,516 |
Top Countries for Websites Using Flex
Here is the country breakdown for websites with Flex installed.
- 93.1% of websites using Flex are in United States
- 1.9% of websites using Flex are in Canada
- 1.6% of websites using Flex are in Hong Kong
| Country | Websites |
|---|---|
| United States | 537 |
| Canada | 11 |
| Hong Kong | 9 |
| Unknown | 5 |
| United Kingdom | 4 |
| Spain | 2 |
| Australia | 1 |
| Belgium | 1 |
| China | 1 |
| Germany | 1 |
Top Categories for Websites Using Flex
Here are the top industry verticals for websites using Flex.
- 49.7% of websites using Flex are in the Health category.
- 31% of websites using Flex are in the Beauty & Fitness category.
- 15.6% of websites using Flex are in the Shopping category.
- 10.4% of websites using Flex are in the Home & Garden category.
| Category | Websites |
|---|---|
| Health | 287 |
| Beauty & Fitness | 179 |
| Shopping | 90 |
| Home & Garden | 60 |
| People & Society | 59 |
| Business & Industrial | 31 |
| Hobbies & Leisure | 18 |
| Sports | 17 |
| Food & Drink | 15 |
| Autos & Vehicles | 12 |
Technologies Co-installed with Flex
These are the technologies most commonly found alongside Flex on the same websites.
| Technology | Websites |
|---|---|
| Cloudflare | 574 |
| Shopify | 571 |
| Google Ads Pixel | 522 |
| Google Adsense | 519 |
| Google Pay | 515 |
| PayPal Express Checkout | 461 |
| Klaviyo | 458 |
| Google Tag Manager | 394 |
| Google Workspace | 346 |
| YouTube Player | 331 |
Get More Insights
Access the full dataset, including detailed technology reports, historical data, and exports. Create a free account to explore what Website Data has to offer.
Get Started