Show how your product is used in everyday life.
Ask a customer for an honest product experience and a photo they took. Visitors can then see more than your product photography.
Flex is an HSA/FSA marketplace that connects American consumers with more than 1,000 brands offering health savings account and flexible spending account eligible products. The platform allows shoppers to use pre-tax dollars across categories including skincare, fitness, sleep, nutrition, vision, and women's health.
Your review = Donation to charity + chance on €250
Two minutes of your time. One donation to a good cause, plus a monthly cash raffle.
Photo reviews
Photos and experiences shared by contributors. Read below how we check submissions.
How reviews and confirmations work
We ask contributors to share a photo they took and their own experience. Reviews go through automated checks. Flagged reviews can be assessed manually. Approval is not a guarantee that a photo is unedited or free of AI generation.
- Email address confirmed means the link sent to that address was used. It does not prove a purchase or the identity of a person.
- Company management confirmed relates to access to this company page. A paid plan does not verify individual reviews.
- A review invitation does not independently prove a purchase. An order reference supplied by a company is not independent purchase verification either.
- Publishing a photo with a review does not automatically permit reuse in marketing. A subscription does not grant that permission either.
Is there a problem with a review or photo? Contact us with the page link and an explanation so we can examine it. [email protected]
Impact via Withflex
You write a review, we donate to a good cause on your behalf.
No donations have been made for Withflex yet, but every review sets one in motion right away.
For business owners
What could Image Review do for your business?
Let customers tell the story. Discover how reviews and customers’ own photos could work for your business.
An example for your business
Let your products become part of your customer’s story.
Collect product experiences with customers’ own photos. Photos with recorded permission can be exported for your website and organic social media, within that permission.
Bring customer experiences closer to the next order.
Display available reviews using a widget on your website. With the WooCommerce plugin, you can also show product reviews alongside the relevant product.
Show what your work means to your customers.
Let customers share their experience with your business. A relevant photo they took can help others understand the work you did.
Show your work through your customer’s eyes.
Ask for a relevant photo of the result alongside an experience. Reuse a photo only when permission is recorded and within the permitted use.
Show experiences where new customers discover you.
Use your company page for company reviews and display available reviews with a widget on your own website, for example alongside your services or contact page.
An illustration of how you could use Image Review. Your choices are not stored.
How it works
- Activate your company pageAdd your business or claim its existing page. Activate access after business verification.
- Ask your customer to share an experienceChoose a product and invite a customer to share an honest experience with their own photo.Ask a customer about their experience of your service and a relevant photo of the result.
- Show customer experiencesDisplay available reviews with a widget. Reuse customer photos when permission has been recorded.
The basic widget is also available on a free account. Product review requests, the WooCommerce product review tab and editing a company page require a paid plan or active trial. Photo reuse always requires appropriate permission.
About Withflex
Main category
HSA/FSA marketplace
Number of brands
1,000+
Payment methods
HSA/FSA card, credit card, debit card, split payment
Average pre-tax savings
30%
Orders processed
2 million+
Annual unused HSA/FSA funds (US)
$1.5 billion
Customer support
Target audience
US consumers with HSA or FSA benefits
Flex positions itself as a discovery and payment layer for the large segment of Americans who leave HSA and FSA funds unused each year. The platform is aimed at health-conscious consumers who want to stretch their benefit dollars further by purchasing from brands they already recognise, rather than navigating confusing eligibility rules alone. Flex operates at the intersection of health benefits and e-commerce, integrating directly into partner brand checkouts and handling reimbursement documentation such as Letters of Medical Necessity on behalf of customers. The marketplace covers a wide price range across categories, from everyday wellness essentials to premium recovery and sleep technology.
Active promotions
Ready to use with your order at Withflex.
Instant savings when paying with an HSA or FSA card, reflecting the average 30% pre-tax discount on eligible purchases.
Example promotion
This is an example of a promotion that could suit this business. It is not a guaranteed active offer or a working discount code. Check the website for current deals.
To the shop
Split payment option at checkout, allowing customers to combine HSA/FSA funds with a regular credit or debit card for a single order.
Example promotion
This is an example of a promotion that could suit this business. It is not a guaranteed active offer or a working discount code. Check the website for current deals.
To the shop
Withflex in the news
Recent updates and background about Withflex, summarised in our own words.
Bluemercury adds HSA and FSA payment option via Flex
Bluemercury has partnered with Flex to enable customers to pay for skin care and wellness products using their HSA or FSA funds. This integration makes it easier for shoppers to use pre-tax health spending accounts at checkout.
Visit Withflex →Why HSA/FSA reimbursement often fails customers at the last step
Flex published an analysis of why customers who pay out of pocket for HSA/FSA eligible products frequently fail to get reimbursed, citing complex claim forms and missing Letters of Medical Necessity. Flex addresses this by filing claims and LMNs directly on behalf of customers.
Visit Withflex →Flex introduces MCP integration for AI assistants
Flex launched a Model Context Protocol integration that allows AI tools such as Claude, Cursor, and Codex to connect directly to a Flex HSA/FSA payments account. The feature is aimed at developers and businesses managing HSA/FSA payment workflows.
Visit Withflex →Summaries by Image Review based on publicly available sources and our own editing. External links may contain affiliate links.
What others ask about Withflex
Answers to the most common questions, based on search behaviour and our own research.
Is Flex (Withflex) a reliable platform to shop with?
Flex has processed more than 2 million orders and works with thousands of brands. The platform handles HSA/FSA payment verification and reimbursement documentation directly, which reduces the administrative burden on customers.
How do I pay with my HSA or FSA card on Flex?
At checkout on a participating brand's website, select 'Flex | Pay with HSA/FSA' as the payment method and enter your HSA or FSA card details. If your card is not available, you can pay with a regular card and Flex will email an itemised receipt for reimbursement.
What happens if my HSA or FSA card is declined?
The most common reason for a declined HSA or FSA card is insufficient funds, as these cards function as debit cards. Customers are advised to check their balance directly with their HSA or FSA administrator.
Do all products on Flex require a Letter of Medical Necessity?
Not all products require a Letter of Medical Necessity. All items listed in the Flex marketplace are HSA/FSA eligible, but some specific products may require a brief telehealth consultation to obtain an LMN before the purchase can be processed.
Your turn
Do you have experience with Withflex?
Help other consumers by sharing your experience, with a photo of what you actually received. It takes two minutes and you automatically join the monthly draw.
€250
cash per month
One winner from all review submitters, drawn on the 1st of the month.
Your review = real impact + chance to win €250
Guarantee: every review triggers one of these 5 real donations:
- 1 Upload a photo Of your order or the product
- 2 Give stars 1 to 5 per aspect
- 3 Trigger a donation Plus a chance at € 250 cash per month
Write a review
Share your photo review about Withflex
A photo says more than a thousand words. Help other consumers with an honest experience and join the monthly draw for € 250 cash.
- Reviewing anonymously is fine, we only need your email
- No mandatory account, no registration
- Reviews appear after a check within 24 hours
- Monthly chance to win € 250 cash
