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Gabriel Garcia
  1. Overview
  2. The problem
  3. What I chose to build
  4. Designing the flow
  5. The cart problem
  6. The result

Himedi

Checkup Builder

Himedi sold checkups as four fixed tiers, but customers kept asking to build their own. I replaced the tiers with a builder, and every order on himedi.com now goes through it.

Add-to-cart rate, 7 wks after launch
+95%
Checkout starts, 7 wks after launch
+82%
Role
Sole designer
Timeline
Jul – Aug 2026
Scope
UX, interaction design, Shopify build
Tools
Figma, AI coding tools, Shopify, PostHog

The problem

The four fixed tiers ran from Baseline at $299 to Comprehensive at $2,815. Any test outside a tier had to be added through a separate Shopify app. Customers kept emailing to ask for a checkup built around one concern, and the tiers made them buy a whole bundle to get it.

The checkups collection the builder replaced.

  1. 01

    Paying for the bundle

    Someone who only cared about their heart still paid for everything else in the tier.

  2. 02

    Extras in another app

    Single tests lived in a third-party app, outside the flow a customer was using.

What I chose to build

I rebuilt it around one base checkup that customers add to, using only tests the clinics offer. It works like configuring a car: start from a base model, then add what you want.

  1. 01

    A base

    The $299 Baseline from the old tiers, or a Whole Body MRI.

  2. 02

    Focus areas

    Heart, Brain and Cancer replace the old tiers. Add any of them to the base.

  3. 03

    Add-ons

    Single tests now live in the builder itself, replacing the old app.

Designing the flow

The builder has two steps: one page for the base, the focus areas and single tests, then a page for the date.

Keep the price in sight

A summary of the checkup stays beside the builder and updates its total with every tap. Opening a focus area, like Heart at +$370, shows exactly which tests it adds.

Single tests, on the same page

Below the focus areas, single tests are listed by category. Each one switches on with a tap, and the total updates.

The same flow on a phone

On a phone it’s the same two steps in one column, with the total pinned to the bottom of the screen.

The cart problem

Making it work in Shopify was the harder part. Shopify treated the checkup, its focus areas and its add-ons as separate products with no date attached, so the cart would have shown a pile of loose items.

  1. 01Shopify can’t show separate products as one group
  2. 02Shopify can’t attach a date to a group of products

One checkup in the cart

I tagged every item in a build with the same hidden checkup ID and rebuilt the cart to group items by it. Now the cart shows one checkup, the way the customer built it.

A date on every checkup

Choosing a date is the last step, and the date is saved to the whole checkup. If the cart holds two checkups, each keeps its own date.

The cart: one checkup, its date and its add-ons, with one total.

The result

The builder replaced the checkups collection, and product pages now redirect to it. Since it launched on August 6, 2026, every order placed on himedi.com has gone through it.

Over its first seven weeks, compared with the seven before, the add-to-cart rate nearly doubled (+95%) and checkout starts rose 82%.

I still track how customers use it in PostHog and GA4 and keep improving it. The videos show the latest version, which puts every choice on one page.

Try the builder on himedi.comRead the Longevity Rebrand case study