Your own HTML blocks
Promo banners, size guides and offers on product pages and the home screen.
Customisation
Change the app to suit you
— with no new build
HTML blocks with JS API support: modify existing screens, add promotions and open modals. Full control from a single panel.
Capabilities
What you can do
JS-API
Access to app functions: navigation, cart, loyalty.
Modals and sheets
Open modal windows from HTML blocks — with no new build.
Why it matters
Normally, changing anything in an app means a new build and a review
In classic development, any change to a screen means a release: build, submit to the App Store and Google Play, wait for review. A Friday promotion signed off on Wednesday goes live the following week. HTML blocks take that cycle out of part of the app — content updates on the fly.
For marketing
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A sale banner on the home screen — published today, taken down tomorrow
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A promo block on the product page for a season or a collection
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A modal with an offer over the current screen, triggered by an event
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None of it needs a developer or a release
For developers
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JS API: navigation, cart, the loyalty screen, native dialogs
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A block does more than render markup — it calls the app's own functions
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Interactive mechanics on top of a finished app, without touching the core
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Combined with the Merchant API — your own logic at any stage of an order
Examples
What people build most often
This is not abstract «customisation» but a set of very specific blocks — the ones normally commissioned from a developer and waited on for weeks.
A sale landing page
A promotion screen with a countdown and a product selection: built in an hour, switched off with one toggle when it ends.
A block on the product page
A size guide, an ingredients list, an instruction — wherever the standard product page falls short and a wrong choice costs more in returns than the markup costs to build.
Onboarding and sheets
A welcome sheet for a new user or a hint about points: shown conditionally, and out of everyone else's way.
FAQ
Common questions about custom blocks
Does the app have to be rebuilt for an edit?
No. HTML blocks update on the fly, with no new build and no second trip through store review. That is the main difference from classic app development.
What is the JS API?
Programmatic access from an HTML block to the app's functions: open a product, add to cart, show the loyalty screen, open a native dialog. It lets you build interactive mechanics on top of a finished app.
Who can create blocks?
Simple banners and promotions can be assembled by a marketer in the panel. Complex interactive logic benefits from a developer who knows HTML and JavaScript.
Can a block be shown to only part of the audience?
Yes, blocks and modals can be displayed conditionally and by event — for example only on a particular screen or during a promotion.
Is this safe for app stability?
HTML blocks run in a controlled environment on top of the app core and require no changes to its build, so they do not affect the stability of the native part.
We will show you your app tomorrow
Send us a request and we will build a demo on your catalogue
in one day, with no access to your website.