Create a list of product on a Non-embedded app

[Edoudou]

I want would like to an App to help my client promote their shopify product from our platform.

I need to display a list of they product, with a name, the images, the description, and the price, to create visual to promote that product.

However I don't want to replace neither the store, nor the admin interface from shopify.

I see to possible solution :
- Admin GraphQL Api

- Storefront Api

Both seems to be a bit to much for what I want, but I hav'nt found an other option yet.

Is there another option ?

If I choose GraphQL, is it compatible with every store ?

If I choose Storefront, can I automatically create a link for custom distribution ?

Thanks in advance for your answers.