What you are buying
Mettert is a store theme with 63 sections, 51 product-page blocks and 17 templates. It ships as a .zip you upload to your store. There is no app to install, no subscription attached to it, and no account to keep.
No third-party libraries
The theme loads no jQuery, no carousel library, no animation framework. Every interaction: the gallery, the quick view, the cart drawer, the predictive search; is written against the browser directly.
Unzip the archive and read assets/. The JavaScript that ships there is one
file, and you can read all of it. Nothing is minified into something you cannot inspect.
The single external script is Shopify's own model viewer, and it loads only on a product that actually has a 3D model.
Nothing here needs a paid app
Themes are often quoted at one price and then need £20–£50 a month of apps to do what the screenshots showed. Wishlists, size guides, stock levels, bundles, cross-sells, sticky add-to-cart, video galleries, FAQ accordions and predictive search are part of the theme.
That is a recurring cost you do not pay, and it is usually larger than the price of the theme within the first year.
Measure it before you pay
The demo store runs the same code that is in the archive, with the same script budget. Open it on your own phone, run a Lighthouse pass, and look at the numbers yourself.
If it does not hold up, do not buy it. We would rather you find that out now than after a refund conversation.
Built to be edited without breaking
Colour, type and spacing are CSS custom properties set in the theme editor, not values buried in stylesheets. Changing a brand colour is a setting, not a fork. This is what makes a theme survive its second year: the customisations you make today do not stop you taking an update tomorrow.
Accessibility is tested, not asserted
Every template in the archive is walked by keyboard and read with a screen reader against WCAG 2.2 AA. Focus order, visible focus, form labelling and landmark structure are part of the build rather than a pass at the end.
Beyond the compliance argument: a store a person cannot complete a purchase on is a store that lost the sale.
What it does not do
It is not a page builder. Sections and blocks are arranged in the theme editor, and that is the extent of the layout freedom. There is no drag-and-drop canvas.
It has no multi-currency logic of its own; it uses Shopify Markets. It carries English copy only at present. And it is compatible with Shopify stores, which is a description of where it runs rather than an endorsement by anyone.